The title of the invention: how a raw material treatment with the raw material handling equipment, and this

Art

[1]

The present invention relates to a raw material processing method using the plant raw material and processing it, to a more particularly to a manufacturing method using a raw material can be produced with a treatment facility, and this sintered ore and reduced iron.

BACKGROUND

[2]

Sintered ore used as a raw material in the blast furnace iron making process are produced by the iron ore and then a solution heat source coal (or coke) and the combustion of coal, sintered ore as the heat of combustion.

[3]

This sintered ore typical sintered ore production equipment for producing is arranged above the light is arranged in the stored upper light hopper, iron raw material and the heat source surge hopper, one direction in which the coke is stored blended material assembly after the mixing, the upper light and blended raw material take provides for transferring a plurality of the track, a plurality of the vehicle is transferred to the step traveling direction to the process advancing direction the conveyor is provided on the upper bogie being transported to the process advancing direction by a conveyor, the flame in the sintering raw material is charged to the balance the ignition for injecting a plurality of the vehicle is installed listed on the path that is transferred to the step traveling direction are arranged in one direction, a plurality of the wind box, a plurality of connected to the end of the windbox duct for sucking the inside of the plurality of balance , it is connected to the duct and a blower (not shown) for generating a suction force.

[4]

Referring to the method for producing sintered ore such a sintered ore by the production equipment, as follows. The blended raw material stored in the upper beam and the surge hopper is stored in an upper hopper and light transport are put on the balance, the balance is being moved through the lower portion of ignition. At this time, the flame injected from the ignition (i.e., the flame) is ignited on the top that is, the surface layer of the sintering raw material accommodated in the vehicle. Balance which has passed through the ignition is transferred to the step traveling direction by a conveyor, wherein the balance is passes through the upper side of the plurality of wind boxes arranged listed in step traveling direction. Balance through the upper side of the wind box, and has a suction force generated in the downward direction, the ignition flame by the balance of the sucked external air is moved in the downward direction. And when the balance has reached the wind box to the process proceeds end point, the flame is brought to the bottom of the vehicle, and wherein the sintering is complete, the above-described operation for a plurality of the balance is made successively.

[5]

At this time, the air, and contains 21% oxygen, such air is drawn into the balance, it is possible to maintain and the movement of the combustion flame of the coal in the inside of the vehicle. And, a balance inside the above-described oxidizing atmosphere is sintering of iron ore by the combustion of coal, where the generated combustion heat.

[6]

[7]

On the other hand, the reduced iron as a starting material for the blast furnace, is prepared by reduction of iron ore and a carbonaceous material (e.g., coal) and mixed with the compacted screen (hereinafter, compacted light), iron ore and the carbonaceous material as a reducing agent. Equipment for producing such reduced iron compresses the mixture mixed in the plurality of hoppers, iron raw material and carbonaceous material crusher for supplying received shred respectively, the iron raw material and mixing, a mixer for mixing when supplied the carbonaceous material to each accommodate the iron raw material and the carbonaceous material the reduction for the reduction of heat-treating the compacted light produced in a molding machine, a molding machine for molding, a cooling for cooling the reduced iron produced by the location at a side of the reducing furnace, and a burner to provide hot air into the reducing furnace.

[8]

Compacted light is charged to the movable balance is sequentially moved to the inside in the reduction and cooling, wherein the compacted material is made of light reduction by the hot air supplied by the burner. Here, the reduction for this purpose, sikineunde reduced by heat-treating the compacted light, the reduction in the inside, it is necessary to be the composition in a reducing atmosphere, in other words a non-oxidizing atmosphere.

[9]

[10]

In this way, similar to the configuration of the equipment in that sintered ore for producing sintered tile reduced iron production facility as described above, moves the material by the movement balance and, supplying a heat source (flame or hot air) to the bed of which is sequentially moved movement balance point.

[11]

By the way, as described above, the balance for producing sintered ore is an oxidizing atmosphere, the reducing furnace for producing reduced iron is because the composition should be in a non-oxidative atmosphere, it is not possible to manufacture with sintered ore and reduced iron.

Detailed Description of the Invention

SUMMARY

[12]

The present invention relates to material handling equipment and method for processing this material, which can be manufactured with the sintered ore and reduced iron.

[13]

The present invention relates to a sintered ore and reduced iron raw material processing equipment, and this raw material processing method that can improve the sintered ore and reduced iron production rate.

Problem solving means

[14]

Materials handling plant according to the invention is the second granulated product is charged into a reduced iron for producing the raw material first granulated and sintered ore Raw materials for manufacture of the respective so as to be disposed above the first granulated, sintered sintering of the second granulated product interval and, as the period following the sintering zone, a first plurality of the track assembly and movable in a material treatment zone which includes a reducing section reducing the water; In which the ignition of the plurality of balance is provided on the path is moved in the material processing zone, the flame jet to the surface layer of the second assembly of water; In the plurality of the vehicle lower side, it is provided so arranged in the plurality of the vehicle travel direction, a plurality of wind boxes to provide suction force to the plurality of the vehicle, respectively; A; located in the reduction zone, the first to recover the reduced off-gas by the reducing reaction assembly from the balance being the reduction of water, the atmosphere composition unit comprising a circulating line for supplying the reducing off-gas to the balance which is located in the reduction zone It includes.

[15]

One end of the circulation line of the raw material processing section, is connected to the plurality of wind box which is located corresponding to the reduction section, the other end of the circulation line is 800 ℃, the top layer within the first assembly of water wherein the balance of the raw material processing section in response to the location points having a temperature of 1000 ℃, and it supplies the reducing off-gas.

[16]

When referred to above the route of the balance is moved, the whole from said ignition to the point that the first assembly of water reduction is complete, the raw material processing section, said first assembly of water-reduction intervals for supplying the reduced off-gas from the circulation line and the point and period of the first up to the point where the first assembly of water reduction is completed, the second and the assembling of water sintering period is in the ignition, a region of up to supply an earlier point of the reducing off-gas, the reduction zone is the reduction-gas by the supply being controlled at no more than 10% oxygen concentration, the sintering period is that the oxygen concentration is adjusted to 15% or more.

[17]

The circulation line, one end of the plurality of wind boxes, connected to the plurality of wind boxes arranged corresponding to the reduction zone, the reduced off-gas generated during the first assembly of water-reduction reaction of a plurality of balance in the reducing zone recovery pipe for recovery; One end is connected to the return line, a first supply pipe for supplying the balance in the reduced off-gas moving from the return line to the reduction zone; of the first supply pipe is the raw material processing section, and include, the first the uppermost layer of the assembly is installed so as to be positioned corresponding to the point having a temperature of 800 ℃ to 1000 ℃.

[18]

The atmosphere composition unit is provided on the extension path of the return line to be connected to the return line, a blower for providing a suction force to the return line; And installed to be connected to the return line between the windbox and the blower, by supplying the external air into the return line, a temperature control unit that the recovered gas into the return line to lower the temperature before it passes through the blower; including do.

[19]

The atmosphere composition unit, one end of the collection is associated with a pipe and the other end is correspondingly located at the sintering section in the upper side the truck, and the second supply that provides, by supplying a reducing off-gas to the sintering zone, the heat source in the sintering section pipe; Is connected to the second supply pipe, by supplying air to the second supply pipe, the concentration adjusting unit to the oxygen concentration of the sintering zone is adjusted such that 15% or more; and a.

[20]

Located on one side of the raw material processing period ends, the fold portion to be the second assembly of water sintering the sintered ore and the end of the first assembly from the balance of water reducing end reducing the light distribution; And a hood which is located between the fold portion to the ignition; contains, the other end of the circulation line is positioned corresponding to the point having the raw material processing section of the first assembly temperature of 800 ℃ to 1000 ℃ uppermost layer of the the hood being connected to the second supply pipe is connected to the hood in response to the sintering zone.

[21]

A reduced iron raw material for producing the first hopper to the first assembly and the water is saved, the contents of the first assembly on the balance water moving to the lower side; And a; and the second hopper located in the rear of the first hopper, charged to the first of the granulated product are charged into a raw material for producing sintered ore after moving the balance to the second granulated product. Located on one side of the fold portion, and a separation unit for separating the reduced iron ores, and the light distribution from the balance.

[22]

The separator separates the sintered ore and reduced iron of any one of the particle size and the magnetic force.

[23]

Material processing method according to the present invention the step of loading a first granulated for producing reduced iron for each of the plurality of the vehicle; A second step of loading a granulated product for producing sintered ore to be positioned on top of the first assembly in the water balance, which has been the first one moving granulated is charged; The first and the second process of move of the granulated product are charged into a plurality of each of the balance in the direction of ignition, a flame ignited on the surface layer and the second assembly the water balance of the plurality of respective contents; A plurality of a sintering interval, interval following the sintering zone sintering of the second granulated product a plurality of the track each of which the flame of ignition, the first listed material treatments including a reduction section arranged for reducing the granulated product process by sequentially moved to pass through the windbox side, which sequentially process the second reaction sintering of a granulated product, and the first assembly is located on the lower side in the water reduction reaction to the image side; And including,

[24]

The first step of reducing the granulated product is the step of first collecting the reduced off-gas generated by the reduction reaction from the first assembly is advanced water reduction balance in the reducing zone; By the exhaust gas supplied to the reduction in number of the balance which is located in the reduction zone the process of creating a reducing atmosphere by controlling the oxygen concentration inside of the vehicle located in the reduction zone; it includes.

[25]

Wherein the number of the reducing exhaust gas in the balance of the method for feeding a in the reduction zone the balance, a corresponding position to the point having the raw material processing section of the balance within the first assembly temperature of 800 ℃ to 1000 ℃ uppermost layer of the and it supplies the reduced off-gas.

[26]

When referred to above the route of the balance is moved, the whole from said ignition to the point that the first assembly of water reduction is complete, the raw material processing section, said first assembly of water-reduction intervals for supplying the reduced off-gas from the circulation line and the point and period of the first up to the point where the first assembly of water reduction is completed, the second and the assembling of water sintering period is in the ignition, a region of up to supply an earlier point of the reducing off-gas, the reduction zone is the reduction-gas an oxygen concentration adjusted to 10% or less by the supply of, and the sintering period is the oxygen concentration is adjusted to 15% or more.

[27]

In the process for recovering the reduced off-gas and of the raw material processing section, from a plurality of the wind box which is located corresponding to said reduction zone to recover the reduced off-gas generated by the reduction reaction of water first assembly.

[28]

In the process for recovering the reduced off-gas, before passing through the blower is recovered reducing the exhaust gas from the wind box of the plurality of provided on the recovery path of the reducing off-gas, a mixture of the recovered reducing the exhaust gas and the air to less than 500 ℃ including the process of lowering the temperature.

[29]

The second in the process of sintering the granulated product, by supplying a corresponding balance in the reducing exhaust gas in the sintering section provides a heat source.

[30]

According to supply the reducing off-gas to the sintering zone, in addition to supplying the intake air from the outside to balance in response to the sintering period, and adjusting the oxygen concentration to 15% or more.

[31]

The balance of claim 1 assembled laminate to be charged to the height of at least 200mm, at most 400mm.

[32]

Wherein the height of the formula 2 assembled laminate 1, and is determined by formula 2 and formula 3.

[33]

[Formula 1]

[34]

Total raw process time (min) = a plurality of sintered balance length (mm) / balance the moving speed (mm / min)

[35]

[Formula 2]

[36]

Sintering time (min) = Total raw process time (min) - a first reduction required assembly time water (min)

[37]

[Formula 3]

[38]

The second assembly process speed the height (mm) = sintering time (min) * sintering (mm / min)

[39]

The process of light distribution for the sintered ore produced by the reduced iron and the second sintered assembly of water produced by the first assembly from the water reducing the first water-reduction assembly and the second assembly the water balance sintered end; Include; the process of separating the light distribution and the reduced iron ores.

[40]

In the light distribution to separate the reduced iron, and sintered ore, it is separated in accordance with the first granulated with a second assembly of water particle size or magnetic force.

[41]

Gangjaeyong the material is used as the material of the iron making process of the blast furnace.

Effects of the Invention

[42]

According to the embodiments of the present invention, it is possible by using a raw material handling equipment to be treated with a plurality of movable balance to be produced with a progressive movement sintered ore and reduced iron. That is, the sintered ore and reduced iron, using the same equipment as in the raw material handling equipment, which is movable truck moves, creating a predetermined period with a sintered easy atmosphere, and configured to the composition in a reduced ease interval other predetermined period together we can be prepared. In addition, there is an effect of productivity and operation efficiency of the sintered ore and reduced iron is to be improved as the second dividing the granulated product layer charged for the first granulated and sintered and prepared for the reduced iron produced in the vehicle.

Brief Description of the Drawings

[43]

1 is a view showing a raw material processing apparatus according to the first embodiment of the present invention is conceptually

[44]

Figure 2 shows that the material to be treated in the balance charged state

[45]

3 is in the material treatment system according to a first embodiment of the present invention, the concept in more detail describe the position of the reducing-gas supply

[46]

Figure 4 is a diagram showing conceptually a material treatment system according to a second embodiment of the present invention

[47]

5 is in the material treatment system according to a second embodiment of the present invention, the concept in more detail describe the position of the reducing-gas supply

[48]

Figure 6 is a result of measuring a metal ratio of the oxygen concentration and the reduction temperature graph

[49]

Figure 7 is a graph showing a first metal ratio of water assembly according to mislead water in the temperature rising stage at the first assembly

[50]

8 is a result of measuring a metal ratio of the oxygen concentration and the carbonaceous material (coal) content graph

Mode for the Invention

[51]

Hereinafter, description will be given of an embodiment of the present invention; However, the present invention is not limited to the embodiments set forth herein will be embodied in many different forms, but the embodiments are the scope of the invention to those skilled in the art, and the teachings of the present invention to complete It will be provided to fully inform.

[52]

1 is a view showing a raw material processing apparatus according to a first embodiment of the present invention. 2 is a view showing a raw material to be treated are charged in the balance state. 3 is in the material treatment system according to a first embodiment of the present invention, a schematic diagram in more detail describe the position of the reducing-gas supply. 4 is a diagram showing conceptually a material treatment system according to a second embodiment of the present invention. 5 is a conceptual view in the material treatment system according to a second embodiment of the present invention, described in more detail the position of the reducing-gas supply.

[53]

[54]

In the raw material processing apparatus according to embodiments of the present invention is prepared with the sintered ore and reduced iron. That is, the charged raw material for producing the sintered ore as the raw material for producing reduced iron in a balance 100, and to a certain period, and proceed with the sintering of the raw material for producing sintered ore, the process proceeds to the reduction of the reduced iron for producing the raw material after the completion of sintering.

[55]

Raw materials for manufacture of sintered ore to be charged to the balance (100) is a granulated product by mixing the additives, such as iron ore, the heat source of coke, limestone, this pre-assembly. The iron ore is pre-assembled to the assembly with an average particle of about 2 to 3mm and at the same time mixing the spectral can seokil, iron ore, coke, limestone of less than 10mm with water. Reduced iron for producing a granulated material is assembled with then a solution of the iron ore and carbonaceous material, briquette or pellet form. The use in a conventional sintered ore produced by the iron ore may be a minimal minute ore difficult 0.1mm or less.

[56]

In embodiments of the present invention it was charged to the reduced iron for producing granulated material in the truck 100 and the upper and lower laminated sintered ore charged to the manufacture of granulated material in its upper portion. Therefore, the following description will be termed the first assemblies (M1) for reduced iron for producing granulated products are charged in the balance, and the first named assemblies (M1) the second granules (M2) the sintered ore for producing granulated products are charged to the top .

[57]

According to the raw material processing apparatus according to embodiments of the present invention, one according to the balance 100, and the sintering of the second granulated product (M2) is located on the upper side it is first jeonhaeng sintered ore is produced, and the second assemblies (M2) after the sintering is finished, the reduction of the first assemblies (M1) is in progress to produce a reduction of light.

[58]

[59]

1, the raw material processing apparatus according to the first embodiment of the present invention is charged to the upper side of the first hopper 21, the upper light (M0), the upper light is stored to be charged to the bottom balance, it reduced iron for the production the third hopper the raw material in a second granulated product (M2) is stored for the production is charged to the upper side, sintered ore of the second hopper 22, the first assemblies (M1) is the raw material of the first assemblies (M1) is stored ( 23), each of the upper light (M0) and, proceeding the raw material first and second assemblies (M1, M2) a plurality of the track (100 is charged to be successively transferred to the step traveling direction), the process to be treated direction is extended, it is installed at the upper side of the conveyor 300 at one side of the conveyor 300, and a third hopper (23) for transferring a plurality of the track 100 in the process advancing direction, for ejecting a flame on the balance (100) located on the path where the plurality of the vehicle 100 at the upper side of the ignition 200, the conveyor 300 is transported, at a side of the ignition 200 Emitter process end point extension formed hood 400, installed are listed in the path onto which a plurality of balance transfer from the lower side of the conveyor 300, a plurality of the track 100, a plurality of wind box for sucking or suction an internal (500 to ), of the plurality of wind boxes (500), the first assemblies (M1) is connected to the plurality of wind box 500 is installed on that reduced interval, the first gas generated in the reduction process of the granulated product (M1) ( recovering the less, a reducing-gas) to include atmosphere composition unit 600 to supply to the re-reduction of the first assemblies (M1) located in the re-reduction intervals.

[60]

Further, the raw material handling equipment is a mixer for pre-assembly and at the same time mixing the granulator (11), iron ore, coke and additives (lime) and water to prepare a first granulated assembled into pellets or briquettes by mixing the iron ore and carbonaceous material ( 12), the plurality of the windbox 500, and the second assemblies (connected to the plurality of wind box 500 is installed corresponding to the sintering zone of the M2), a second gas generated in the sintering process of the granulated product (M2) to position the in side of the exhaust unit 700, a conveyor 300 for exhaust, balance cooler 800 to cool the sintered ore and fold portion, the light distribution sintered ore and the reduced iron is reduced iron the light distribution from the (100), the cooling sintered ore, and and a separation device 900 for separating the reduced iron.

[61]

[62]

A spark 200 by spraying the flame to the balance through the lower side, and provides a heat source for combusting the coke. And when one bogie (100) passes through the lower side of the ignition 200, the flame is injected into the second surface layer of the granulated balance. In another embodiment in the ignition 200 is applicable to a wide variety of means for spraying a gas burner or the flame is not limited to this.

[63]

[64]

Hood 400 and sucks the external air to the balance, an apparatus for sucking the air sucked into the balance again, is provided so as to extend between the ignition 200 and the fold portion.

[65]

By a plurality of wind box 500 provides the suction force to the hood 400 and balance 100, and sucked into the outside air hood 400, and the sucked air to move in a downward direction of the vehicle (100) . A plurality of the windbox 500 such lists are placed in the interval between the times of ignition (200) portion.

[66]

The ignition 200 is a third hopper 23 and the hood 400 is positioned between the (or the first wind box), an upper light (M0), the first assemblies (M1) and second assemblies (M2) is the jet flames towards sequentially stacked balance 100. That is, the injection on the flame within the raw material layer top surface balance (100) passing through the lower side of the ignition 200. So when the flame is injected from the ignition 200, the upper layer of a coke meeting of the intake to the heat balance 100 by a flame of air and the second assemblies (M2) a second granulated product (M2) that is, the surface layer It is ignited. And around the flame it is raised to 1400 to 1300 ℃ ℃, the additives of limestone and iron ore to form a low-melting-point compound, the sintered part of the reaction proceeds as the iron ore melt. In addition, the passes through the upper side of the above-described at the balance 100 is disposed in the list on the progress process as feed to the process advancing direction by a conveyor 300, a plurality windbox path 500 one by one. Thus, the second assembly the water (M2) flame or generation surface of the heat, the air supplied from the hood 400 has a second granulated product in the lower portion by moving the suction force of the wind box 500 is in the downward direction within the balance ( the combustion of the coke in M2) causes. Accordingly, the flame and heat of the second assembly as it moves to the lower side from the surface layer of water (M2), the reaction is gradually sintered to the downward direction from the second surface of the granulated product (M2) is in progress.

[67]

Thus the second, the first assemblies (M1) located at the lower side of the second granulated product (M2) during sintering is made of granulated (M2) is raised when supplied with heat transferred from the upper side. And as described above, the flame and heat of the second granulated product (M2) the sintering proceeds while moving to the lower side from the surface layer, the more flame and heat is moved to the lower or second lower layer sintered to a granulated product (M2) is the almost over gradually rises, the first assemblies (M1) is the temperature.

[68]

In this case, the first to the carbon of the carbonaceous material and iron ore reaction (coal) contained in the granulated product Reduction (Scheme 1 and 2) takes place. And wherein CO gas generated is burned by reaction with the surrounding oxygen by reduction or (scheme 3), diverging to the outside of the iron oxide is generated heat (Eq. 4).

[69]

Scheme 1) Fe 2 O 3 + 3C = 2Fe + 3 / 2CO 2

[70]

Reaction Scheme 2) Fe 2 O 3 + C = 2FeO + CO

[71]

Scheme 3) FeO + CO = Fe + CO 2

[72]

Scheme 4) CO + 1 / 2O 2 = CO 2

[73]

[74]

On the other hand, in order to increase the reduction efficiency (reduction rate or rate of metal) of the first assembly of the internal water balance (M1), the oxygen concentration control in the balance 100 it is important. Figure 6 it can be seen that as a result of measuring a metal ratio graph according to the oxygen concentration and the reduction temperature, the oxygen concentration decreased from 21%, more significantly it increased the rate of metal. Then, when the oxygen concentration exceeds 10%, the first assemblies (M1) within the carbonaceous material (i.e., coal) is burned first rises rapidly the temperature of the granulated product (M1) at a low temperature, where primarily the iron ore that the carbonaceous material to be used for the reduction to be used for both the combustion was observed. And the reduction temperature 1300 ℃ was found that there is a first assembly requirements (M1) melting was a problem that is observed the generation of, from it to the reduction of the first assemblies (M1) to control the temperature below 1300 ℃ . 7 is first granulated illustrates a metal ratio with temperature in the temperature rising stage at the (M1), a low temperature in the metal ratio slows the reduction reaction rate of the iron ore is very low and, in at least about 800 ℃ the increase rate of the metal ratio fast it can be seen that.

[75]

Thus, the first can be seen that assemblies (M1) reduction rate to balance the oxygen concentration from the temperature of at least 800 ℃ is increased in order to increase the rate of metal should be adjusted to not more than 10%. In other words, the first assembly when the temperature of the water (M1) to an elevated temperature above 800 ℃, by adjusting the balance oxygen to less than 10%, the composition should be a non-oxidizing or reducing atmosphere.

[76]

Figure 8 is preferably as a result graphs of measuring a metal ratio of the oxygen concentration and the carbonaceous material (coal) content, the content of the carbonaceous material was added to more than 5% by weight, not more than 20% by weight to first increase the reduction rate of water assembly. When the content of carbonaceous material exceeds 20% by weight, it is insufficient metal ratio increasing effect.

[77]

[78]

On the other hand, the second assembly by the flame and thermal ignition in water (M2) moves downward The sintering is conducted to the lower layer of the second granulated product (M2), the temperature of the first assemblies (M1) an elevated temperature as described above, there is, at this time, the second assembly temperature of the water top layer of the first assemblies (M1) adjacent to the position (M2) is also elevated.

[79]

As described above, the second assembly from the time when sintering is almost completed by the lowermost layer of water (M2), shall be subjected to reduction of the first assemblies (M1) or immediately after complete. The second assembly has a time to sinter the lowermost layer of water (M2) is substantially completed, the first assembly when measuring the temperature of the lowermost layer of water (M1) which one temperatures of 800 ℃ to 1000 ℃.

[80]

Therefore, the present invention controls the first assembly from the balance oxygen atmosphere where the temperature of the upper layer of water (M1) having one of a temperature of 800 ℃ to 1000 ℃ to 10% or less.

[81]

On the other hand, the first due to the use of oxygen to the reduction of the granulated product (M1), the oxygen concentration was relatively low (low compared to the at least air), the temperature is also high. Therefore, in the present invention, a first assembly reduced to recover the reduced off-gas generated in the process, and it provides a heat source to reusing the reduction, reducing the ease of the first assemblies (M1), and a non-oxidizing atmosphere of water (M1) The composition.

[82]

According to the present invention To this end, according to the mood of the unit 600 is the process in progress balance 100 while moving, the balance is having any one temperature of the temperature of the top layer 800 ℃ to 1000 ℃ of the first assemblies (M1) supplying a reducing off-gas from a position to adjust the oxygen concentration to less than 10%. The reduced exhaust gas is first the first assembly as a gas generated from the balance reduction is conducted in water (M1), mood of unit 600 is an oxygen concentration of recovering the reduced off-gas and the balance 100 to be reduced by recycling them 10% It regulates below.

[83]

More specifically, the present invention, subjected to a sintering reaction by the atmosphere unit 600 to the bottom layer of the second granulated product (M2), the first assemblies (M1) does not cause sintering reaction, up the reduction reaction and so. If this in other words, the two assemblies (M2) without having to go to the first assemblies (M1) the flame ignited on the surface, and such that the extinction before, non-combustible or first granulated in a non-oxidizing atmosphere (M1 of ) it is reduced to. That is, the second then when sintering is complete by the bottom layer of the granulated product (M2), to stop the reaction and the sintering, leading to a reduction reaction.

[84]

For this purpose, according to the balance (100) is moving, the second assembly after the sintering to the lowermost layer of water (M2) to exit and the maintenance of the flame zone in which the truck 100, immovable, non-oxidizing or a reducing It means that the composition be in the mood.

[85]

[86]

In the present invention, it determines the starting position the supply of the reducing off-gas to the temperature of the uppermost layer of the first assemblies (M1), as described above. This is because the second assembly is the temperature of the water (M2) top layer, go to gradually lower the flame ignited on the surface closer to the end point of the sintering of the second granulated product (M2) of the increase. In the present invention, a first assembly and a top layer of the temperature of the water (M1) supplying a reducing off-gas from a point 800 ℃ to 1000 ℃. For example, the in the ignition 200 points 0%, the point in the wind box 500 of the outermost end of the process of the vehicle travel direction when as 100% point of the first top layer the temperature of the granulated product (M1) this 800 ℃ to 1000 ℃ the point may be any one of the proceeding interval of 40% to 50% of the point process. In this case, a moving truck (100), 40% to the 50% point of the process proceeds section when positioned in the (reduced-gas supply location), to supply the reducing off-gas, the balance inside passing through the point is an oxygen concentration of 10 the% or less, and, whereby the composition is in a reducing atmosphere is carried out in accordance with the reduction of the first assemblies (M1). And since the plurality of the vehicle 100 through the reduction-gas feed position in sequence, the reduction is carried out, each of the inner plurality of the track (100) is composed by sequentially with a non-oxidizing or reducing atmosphere.

[87]

[88]

Hereinafter, a detailed description of the first embodiment of the present invention in another atmosphere unit.

[89]

By the suction force of the wind box 500, the outside air is sucked into each of the plurality of the vehicle 100 through the hood 400, as described above. Air and includes a 21% oxygen. On the other hand, the second granulated product (M2) as the reducing zone to be reduced is carried out in a from the ends since the point by raw material processing end point (100% point), the first assemblies (M1) sintering, in a reducing zone balance is reducing the composition to be in the atmosphere, the air having an oxygen concentration of 21% can not create a reducing atmosphere.

[90]

Therefore, in the embodiment of the present invention to supply the reducing off-gas as the reduction region, the composition of the bogie 100, inside of which passes through the reduction section in a reducing atmosphere. That is, by connecting the mood of unit 600 in accordance with an embodiment of the present invention with a hood 400, an external air inlet, and the balance through at least a reduction zone so that a reducing atmosphere or a non-oxidizing atmosphere. More specifically, the atmosphere composition unit 600 is supplied to a reducing exhaust gas, and the oxygen concentration of the balance 100 is less than or equal to 10%. This is achieved by controlling the flow rate of the reducing off-gas to be supplied to the hood 400.

[91]

[92]

First exemplary atmosphere units 600 atmosphere unit 600 according to the exemplary composition of the balance 100 through the reduction zone using the reducing exhaust gas in a reducing atmosphere, and a second example according to the examples, the reducing off-gas the composition used in the sintering zone where the second assembly of water sintering proceeds to the sintering atmosphere is easy, and the composition of the atmosphere in the reducing zone in a reducing atmosphere is easy.

[93]

[94]

1 and 3, the mood of the unit 600 according to the first embodiment one end is respectively connected to the plurality of the windbox 500, and the other end connected to the hood 400, through the reduction zone circulating line 610, it is provided on the path of the circulation line 610 suction force that enables in reducing exhaust gas plurality of wind box 500 can suction or to move in a circular line (610) for recovering the exhaust-gas from the balance of provided to be installed on the blower (hereinafter, a first blower (630)), the windbox 500, and the first blower 630. the circulation line 610 is positioned between the route of the circulation line 610, wind the It is provided to be connected to a circulation line 610 between box 500, the dust collector (the first dust collector 620) for collecting the exhaust gas a reducing off-gas from the first dust collector 620 of the first blower 630, the outside air by the suction by supplying, to contribute to lower the temperature of the reducing off-gas And a temperature control unit 640.

[95]

By supplying the circulation line 610 balance 100 that the recovery of the recovered off-gas from the reduction zone reducing, through the re-reduction period, the balance (100) is such that the reducing atmosphere. At this time, the the first granulated to said top layer temperature of 800 ℃ to 1000 ℃ any one reducing-gas supply point having a temperature of the location of the (M1), a moving truck (100) is the reducing-gas feed position when the position, oxygen concentration in the balance 100 by the reduced off-gas supplied from a circulation line 610 is adjusted to more than 10%. For example, the first assembly is the point with the one temperature during the temperature of the top layer 800 ℃ to 1000 ℃ of water (M1) of the overall process proceeds interval, and one point in the 40% to 50%, the point and the reducing-gas feed position, and a moving truck (100) the oxygen concentration in the balance 100 by the time be located at any point in the 40% to 50%, reducing the exhaust gas supplied from the circulating line 610 It is adjusted to 10% or less.

[96]

In this case, by the suction force of the wind box 500 to the location corresponding to the lower side of the circulation line 610 is reduced off-gas is discharged, and reducing the exhaust gas is sucked into the balance 100 that passes through the lower side of the circulating line 610, the an internal balance 100 is the composition in a reducing atmosphere.

[97]

The circulation line 610 is one end of a plurality of the windbox 500 is connected to and the other end is disposed so as to extend to the upper wind box 500, the reduced gas exhausted from the plurality of the windbox 500 windbox (500 ) connected to the return line 611, one end of return line 611 to move to the upper position and the other end is connected with the hood 400, a supply for supplying a part number of the reduced off-gas to the collection pipe 611, the pipe (the , it includes a first supply pipe 612). Wherein a first supply pipe 612 is connected to the hood 400, the first assembly to be positioned with the point corresponding to the temperature with the temperature of any one of the 800 ℃ to 1000 ℃ of the top layer of water. For example, the first assemblies to said one point of the of the top layer the temperature is 800 ℃ to 1000 ℃ the spot progresses total process duration of 40 to 50% of the (M1), a first supply pipe ( 612) is connected to the hood 400 so as to correspond with any one of the points of the 40% to 50%.

[98]

On the other hand, the outside air and reduction of the exhaust gas to the hood 400 which extends to the region between the ignition 200 and the fold portion is supplied. And a part of the hood 400 and the second region corresponding to location and sintering period of the granulated product (M2), and the remaining partial region is a region corresponding to the location and the reducing zone of the first assemblies (M1).

[99]

By the way, when the exhaust gas supplied to the reduction the reducing-gas feed position, and this can be spread into the sintering region. On the contrary there is a sintering period is the composition in an oxidizing atmosphere having an oxygen concentration of at least 15%, the atmosphere gas may be diffused into the reduction zone. According to an embodiment of the invention, the other inner hood 400 is installed a partition wall 410 between the sintering zone and the reducing zone. At this time, the partition wall 410 is preferably located adjacent to the first supply pipe, to mount so as to be positioned at the rear of the first supply pipe (612).

[100]

The first dust collector 620 to remove dust contained in the recovered reduced-gas moves into the first blower 630. For this purpose, the first dust collector 620 is connected to the return line 611 between the wind box 500 and a first blower 630.

[101]

A first blower 630 is provided so as to provide a suction force to the return line 611, connected to the return line 611 connected to the rear end of the first dust collector 620.

[102]

On the other hand, the reduced off-gas exhausted from the wind box 500, specifically, is more than 500 ℃, has a temperature of about 700 ℃. And conventional blower is made of a weak material to a temperature above 500 ℃. Accordingly, the number of reduced off-gas to return line 611 needs to be cooled to the temperature of the first blower is less than 500 ℃ the temperature of the reducing off-gas before it passes through a 630.

[103]

Therefore, in the present invention, connected to a first shear return line 611 to the external supply temperature control for feeding a reducing exhaust gas air unit 640 is connected to the blower (630). Temperature control according to the embodiment unit 640 includes a first suction part 641 and one end is first connected to a suction portion 641 and the other end of the first dust collector 620 of the first blower (630 to suck the outside air ) includes a first suction pipe 642 is connected to the return line 611 between. According to the temperature adjusting unit 640 according to the embodiment, by controlling the air flow rate supplied to the return line 611, it is possible to adjust the temperature of the reducing off-gas.

[104]

[105]

The atmosphere composition unit 600 according to the second embodiment can be utilized as well as the reduction region, by supplying the reducing exhaust gas in the sintering section, for providing a heat source in the sintering period, and sintering the mood is easy.

[106]

The atmosphere composition unit 600 according to the second embodiment are respectively connected to the plurality of the windbox 500, and the other end connected to the hood 400, the exhaust from the balance 100 that pass through the sintered zone and reduction zone a first blower (630 which are provided on the path of the circulating line 610, a circulation line 610 for recovering the exhaust gas provides a suction force that enables the plurality of the windbox 500 within the reduced off-gas can be sucked or to move in a circular line ), the which is provided in the circulation line 610, the dust collecting the reduced gas exhausted from the wind box 500 to a position between the wind box 500 and the first blower (630) in the path of the circulation line (610) 1 a dust collector, is provided to be connected to the first dust collector 620 and the circulation line (610) between the first blower 630, by supplying to suck the outside air, temperature control, which serves to lower the temperature of the reducing-gas section ( is supplied to 640), sintering zone Of and a concentration control unit 650 for controlling the oxygen concentration.

[107]

Thus, the cycle line 610 according to the second embodiment further comprises a second supply pipe 613 as compared to the first embodiment. In other words, once installed to be connected with a plurality of wind box 500 and extends to the other end of the upper side the wind box 500, a wind box for the reduced gas exhausted from the plurality of the windbox 500, the circulation line 610 ( 500) return line 611, one end connected to the return line 611 and the other end of reduced section and the corresponding first supply pipe 612, once the collection pipe connected to the hood 400 in a position to move to the upper position ( connection and 611) and to the other end comprises a second supply pipe 613 is connected to the hood position corresponding to the sintering zone. Wherein a first supply pipe 612 is connected to the hood 400 so as to correspond to a location having a first assembly temperature of the any one of the temperature is 800 ℃ to 1000 ℃ the top layer of water (M1). And the second supply pipe 613 is preferably connected to the hood 400 so as to be disposed in the second granulated product (M2) sintering the starting point In other words, the first wind box (500).

[108]

On the other hand, the balance through the sintering range is the second for the sintering of the granulated product (M2), and the oxygen concentration of the balance 100 to be maintained above 15%. However, reducing the exhaust gas is, because the oxygen concentration of 7% to 8%, the reduced when an external air supply to be drawn in by the suction force of the exhaust gas and the wind box 500, the second granulated product to oxygen is insufficient to be used in combustion (M2 ) it may be difficult sintering. Thus, to supply the reducing off-gas to a heat source available, the windbox 500, a second feed pipe through when it is difficult to secure 15% or more oxygen concentration of only the outside air, and the concentration adjusting unit 650 is sucked by the 613 as the oxygen, to adjust the oxygen concentration is at least 15%. Concentration adjusting unit 650 is connected to the second suction unit 651, and one end of the second suction part 651 to suck the outside air and the other end of the second suction pipe connected to a second supply pipe 613 (652 ) a.

[109]

[110]

An exhaust unit 700 is discharged to the outside to recover the recovered off-gas from the sintering zone. The exhaust unit 700 in accordance with an embodiment, once installed on the extended path of the exhaust line 710, an exhaust line 710 connected to the plurality of wind box 500 is installed corresponding to the sintering zone, the dust in the exhaust gas It is connected to the rear end of the second dust collector 720, the second dust collector 720 to remove a second blower 730 to provide a suction in the exhaust line (710).

[111]

[112]

Cooler 800 is a cooler according to the apparatus for cooling the reduced iron ores, and the light distribution from the balance 100, the embodiment is cooled by using the air. Of course, the cooling method is applicable in a variety of media is not limited to air, that does not affect the properties of the sintered ore and reduced iron.

[113]

Separation device 900 may be a means for separating the cooled sintered ore and reduced iron, for example, either a magnetic separator to separate magnetic force in accordance with the screen and to separate according to particle size. Since sintered ores are tens to hundreds of times compared with the size reduced iron, by using a screen having a plurality of apertures divided by the particle size, it is possible to remove the sintered ore and reduced iron. Further, the reduced iron is Fe metal is metallized with a metal Fe in accordance with the reduction, the first assemblies (M1) has a magnetic force. However, because the ores of iron oxide (FeO) form, or does not have a magnetic field, it is very limited. Thus by using a magnetic separator with a magnet or the like, it is possible to remove the sintered ore and reduced iron according to the magnetic force.

[114]

[115]

It will be described below first assemblies (M1) and a second stack height (h1, h2) of the granulated product (M2).

[116]

The present invention was charged to the second granulated product (M2) for the first assemblies (M1) and sintered ores produced for the reduced iron produced in the balance 100, as described above, the first agent to the granulated product (M1) 2 granulated (M2) is charged into the layer to a position. And the second assembly is sintered in a row to the lower layers from the top layer of water (M2) comprises, after the first reduction is made from the top layer of the granulated product (M1) to the lower layer as the truck moves. Thus, the first sintering section of the assemblies (M1) and second assemblies (M2) a first granulated product (M1) reduction section and a second assemblage (M2) of by the height (h1, h2) of the determined .

[117]

It was an experiment as shown below to evaluate the first assembly process requires time according to the water level.

[118]

The first assembly when the stacking height of water (M1) to 300mm, the first after the granulated product (M1), the time required to raise a temperature required for reduction (heating time), the time required for the reduction (reduction time), an end-reduction cooling the sum of time (cooling time) required for, there is a need for a time of about 15 minutes. The time necessary for the reduction of about 8 has been able to check the bunim, the reduction time was confirmed to have been different if the stacking height, and will not change much. Furthermore, the first assembly when the height of water (M1) by 200mm, about 8 minutes time required for the reduction, the total process time was found to require 10 minutes. As another example, a first time required for assembling the height of water (M1) for the reduction when less than 200mm is not much change in 8 minutes does not The total process time is also significantly different in 10 minutes. By the way, is lowered, the productivity of reduced iron, which is undesirable.

[119]

As another example, the first assembly if by a 400mm height of water (M1), was the total processing time check 20 bunim, if the height is more than 400mm, a too long process time, there is a low productivity problem. In addition, the first granulated and that the intensity variation in the reduction rate in the height direction if the height of the (M1) exceeds 400mm, there is a problem that occurs greatly.

[120]

Therefore, in the present invention, the stacking height of the first assemblies (M1) with at least 200mm, 400mm or less.

[121]

[122]

And, the height of water first assembly to 300mm, and an oxygen concentration of 10% as the balance, to the inlet gas temperature of 700 ℃ was subjected to reduction. After the reduction reaction, the reducing exhaust gas in a minor concentration results were compared to the inlet gas is reduced from 3 to 5% measured, a temperature of the reducing-gas temperature has not changed significantly from the 700 ℃ of the inlet gas. When ordinary temperature of the exhaust gas is low eojyeoya by temperature rising charged water of the gas flowing in a first combustion of CO gas generated in the granulated product (M1), at the same time as the oxygen concentration of exhaust gas lowers in accordance with the oxygen will be used, At this time, because the gas temperature is raised by the heat generated.

[123]

[124]

The second assembly is determined by the height of the first assembly of water, the sintering process speed to increase water.

[125]

[126]

Of the total raw material treatment process time, the first height of the assembly of water a second assembly according to the height can be calculated by the equation (1) below. Total raw process time (min) on the material handling equipment is dependent on the step length (m) and traveling speed (m / min) of the vehicle. The step length (m) means a length (m) of the plurality of the track arranged in the process advancing direction. Thus, the raw material represents the overall processing time (min) length (m) and traveling speed (m / min) of the balance of the plurality of the vehicle equal to the equation (1).

[127]

[Formula 1] All raw process time (min) = a plurality of sintered balance length (mm) / balance the moving speed (min / min)

[128]

Wherein in Formula 1, the entire raw materials of time is determined, the first reduction required time time (min) available to the second assembly from the water sintering (min) assembly in accordance with the stacking height of water may be defined by the equation (2).

[129]

[Formula 2] Sintering time (min) = Total raw process time (min) - a first reduction required assembly time water (min)

[130]

And when the sintering time (min) determined in accordance with equation 2, in view of the productivity and the quality required by the operation, and to set the running speed sintering, to obtain the second assembly the height (min) from the sintering time and the sintering process speed is (equation 3).

[131]

[Formula 3] pace second assembly the height (mm) = sintering time (min) * sintering (mm / min)

[132]

So the first and second assembly when the stacking height of water is determined, the contents of the first and second assemblies in a predetermined height in the balance at the time of raw material processing proceeds a step.

[133]

[134]

Hereinafter, reference to Figure 1 to Figure 4, the operation and sintered ore and reduced iron manufacturing method using the same of the raw material processing apparatus according to embodiments of the present invention.

[135]

In the present invention, as described above, when the first assembled top layer temperature is any temperature of 800 ℃ to 1000 ℃ of water (M1), or in the entire process period, for example any one of 40% to the 50% point when the point of the reducing-gas supply.

[136]

Hereinafter, the first assembly temperature of the top layer of water (M1) and 900 ℃, to supply the reducing off-gas, is described, for example, that the point where the temperature is 900 ℃ of the top layer, for example the 45% point.

[137]

[138]

First, prepare the first assemblies (M1) and a second granulated for producing sintered ore (M2), and an upper light (M0) for producing reduced iron.

[139]

Wherein the first assemblies (M1) is reduced iron as a raw material for the preparation, the prepared coal of less than 0.1mm and a minimal iron ores, carbonaceous material and less than 0.1mm, this weight ratio 80: 20 and mixed with, this pair of roll type Wavre using ketteo the granulator 11, length 45mm, width 23mm, a granulated product is assembled with the size of the briquettes having a thickness of 17mm. Of course, the first assemblies (M1) can also be prepared into pellets by using a pellet tie low.

[140]

Second assemblies (M2) is a raw material for sintered ore production, iron raw material and a binder of minute coke and additives of limestone (CaCO 3 mixture of) and water in a mixer, and to this pre-assembly having an average grain size of 2 to 3mm It is a granulated pre-assembly into particles.

[141]

An upper light (M0) has a particle size of the produced sintered light is small to 2 to 3mm sintered ore, blast furnace not used in the operation, and is used as a top light at the time of raw material processing of the next charge. Upper light serves to protect the case, the balance which is an iron material assists smooth the flow of the gas balance in the feed process, when iron ore raw material is melted.

[142]

The top light as described above (M0), the first when the granulated product (M1) and second assemblies (M2) is provided, this first hopper 21, a second hopper 22 and a third hopper 23 It is charged to each. A first hopper to the plurality of the balance and 21, a second hopper 22 and a third hopper 23 to successively move to the lower side, the upper light (M0) in each truck (100), the first assemblies (M1) the second assembly is laminated to the charged water (M2) in order. At this time. A first and a stacking height of the granulated product (M1) with at least 200mm, 400mm or less. The first setting the stack height, sintered ore sintering process speed in consideration of the productivity and the quality required by the operation of the assemblies (M1), group 2 assembly according to the stack height of the set first assemblies (M1) the stacking height of water (M2) is calculated. The second laminated assembly by charging water (M2) to the calculated height to the upper first assemblies (M1).

[143]

[144]

Then, each of the plurality of balance 100, and successively pass through the 200 lower to the ignition by the conveyor 300, when the flame position is jetted balance in the first wind box and the second surface layer of the granulated product (M2) the flame is ignited on. The flame is ignited truck 100 is moved along the extending direction between in accordance with the operation of the conveyor 300, the hood 400 and the windbox 500. At this time, because it is fed into the outside air is drawn into the hood 400, the balance 100 by the suction force of the plurality of the windbox 500, and an oxygen concentration of 21% in air, the balance 100, combustion or sintering of the internal coke easy it is possible to maintain the oxygen concentration in the.

[145]

And ignition to the flame on the balance (100), moving the bogie 100 is to pass between the hood 400 and the wind box 500, the flame will gradually move to the lower side. At this time, and a second assembly of the coke with water (M2) in a position around the combustion flame to move in the downward direction, and sintered ore raw material by the heat of combustion. Then, the sintering in the downward direction from the surface layer of the second granulated product (M2) is in progress, as the balance 100 is moved to the step traveling direction. And the continuous sintering process proceeds while moving as described above a plurality of the vehicle, respectively.

[146]

On the other hand, when a moving truck (100) to position the 45% point of the total step period, the second assembly is completed, the sintering to the lowermost layer of water, the flame is extinguished. This is maintained at more than 15% oxygen, 45% by the previous point, but since from the combustion of the coke to be flame alive, 45% point of the oxygen concentration is adjusted to not more than 10%, the flame is extinguished by oxygen is low. Thus 45% of a balance within the second assembly moves to the point where water is sintered ore is all complete sintering.

[147]

[148]

And if the balance is moved to pass through the reduced section between the 45% to 100% mark, the first granules is reduced. In this case, the reduction period is the composition in a reducing atmosphere by the reducing off-gas generated in the reduction process, the first water-assembled prior reduction treatment. That is, when the operation of the first blower 630 of the atmosphere composition unit 600 to the reducing process, the reduced off-gas is discharged from the corresponding arrangement in the reduction zone the windbox 500. Wind the reduced off-gas from the exhaust box 500 has the dust passes through the first dust collector 620 is removed and is mixed with air supplied from the temperature control unit 640 is adjusted to a temperature below 500 ℃. Then, the reduced-gas adjusted to not more than 500 ℃ is supplied to the hood 400 via a Go along a return line 611, a first supply pipe (612). Here, the first supply pipe 612 is the corresponding mount of the entire process period, the first top layer of the temperature of the granulated product (M1) so as to position the 45% point of 900 ℃ supply the reducing off-gas.

[149]

Therefore, when a moving truck 100 is located at the 45% point, the first supply, and the reduced off-gas discharged from the pipe 612, sucked into the balance, this with the external air by the suction force of the wind box 500 is through the hood and is drawn into the balance 100. At this time, by adjusting the flow rate of the reducing off-gas to be supplied through the first supply pipe 612 it can be adjusted to balance the oxygen concentration below 10%.

[150]

By default, there is outside air sucked into the balance 100 through a hood 400 by a plurality of wind box 500, when the truck has passed the 45% point, the first supply pipe 612, the oxygen concentration of 7 through is reduced to 8% of the exhaust gas is supplied. Thus, the balance 100 of the reduction zone is the atmosphere there is the composition by the air and reducing the exhaust gas sucked from the outside, at this time, and as controlling the feed rate of the reducing off-gas can control the oxygen concentration to less than 10%, whereby the balance ( 100) may create an atmosphere in a reducing or non-oxidizing atmosphere.

[151]

In addition, the reducing-gas temperature has got a high temperature of more than 500 ℃,, first it is possible to ensure additional heat to supplement the assembly or heat insufficient for reduction of water by supplying it.

[152]

This atmosphere reaches the reduction zone in the reduction atmosphere by the control unit in 100% Composition points through the plurality of sections of reduced balance each, the reduced iron is produced first assembled end of the water reduction.

[153]

The prepared sintered ore and reduced iron is used as a raw material during the iron making process in the blast furnace.

[154]

[155]

In the above it has been described to create an atmosphere of the reducing zone in accordance with the material handling equipment, by using the reduced off-gas according to the first embodiment. But it not limited to, using a reducing off-gas, as in the second embodiment it is possible to create an atmosphere of the sintering section. That is, the reduced off-gas recovered from the reduction zone is moved along the return line 611, and some is provided to the reducing zone by a first supply pipe 612, and some interval sintered via a second supply pipe (613) to be supplied.

[156]

The feed pipe 2 can be obtained in addition a heat source in the sintering section as a reducing off-gas is supplied to the sintering range from 613, it is possible to solve a heat shortage. However, when using only the air that is drawn in by the suction force of the reduced off-gas and the wind box 500, it may be difficult to progress sintering the oxygen concentration is lowered. Thus, the second supply portion connected to the concentration control pipe 613, by additionally supplying air with a reducing exhaust gas, thereby maintaining the oxygen concentration in the sintering section by more than 15%.

[157]

[158]

When sintered ore and reduced iron manufacturing is completed through the process as described above, sintered ore and reduced iron in balance it is cooled is charged to the condenser. And a cooling sintered ore and reduced iron is shifted to the after loading is to be a separator device, the separation into sintered ore and reduced iron after step.

[159]

[160]

Thus, the present invention can be by using a raw material handling equipment to be treated with a plurality of movable balance to be produced with a progressive movement sintered ore and reduced iron. That is, the sintered ore and reduced iron, using the same equipment as in the raw material handling equipment, which is movable truck moves, creating a predetermined period with a sintered easy atmosphere, and configured to the composition in a reduced ease interval other predetermined period together we can be prepared. In addition, there is an effect of productivity and operation efficiency of the sintered ore and reduced iron is to be improved as the second dividing the granulated product layer charged for the first granulated and sintered and prepared for the reduced iron produced in the vehicle.

Industrial Applicability

[161]

According to the raw material processing equipment and raw material processing method using the same, it is possible by using a raw material handling equipment to be treated with a plurality of movable balance to be produced with a progressive movement sintered ore and reduced iron. That is, the sintered ore and reduced iron, using the same equipment as in the raw material handling equipment, which is movable truck moves, creating a predetermined period with a sintered easy atmosphere, and configured to the composition in a reduced ease interval other predetermined period together we can be prepared. In addition, there is an effect of productivity and operation efficiency of the sintered ore and reduced iron is to be improved as the second dividing the granulated product layer charged for the first granulated and sintered and prepared for the reduced iron produced in the vehicle.

Claims

[Claim 1]

A reduced iron for producing the raw material first granulated and sintered ore for producing raw materials for each and the second assemblies are charged so as to be disposed above the first granulated, after the second sintering section, and the sintering period sintering granulated an interval, the first assembling a plurality of the vehicle and movable in a material treatment zone which includes a reducing section reducing the water; the plurality of the vehicle are provided on the path is moved in the material processing section, the surface layer and the second assembly of water the ignition for spraying flame; in the plurality of the vehicle lower side, is provided so arranged in the plurality of the vehicle travel direction, a plurality of wind boxes to provide suction force to the plurality of the vehicle, respectively; located in the reduction zone, wherein 1 to recover the reduced off-gas by the reducing reaction from the assembly that is the balance of water reduction, the reduction times as the balance which is located in the reduction zone Materials handling equipment, including; atmosphere unit including a circulation line for feeding.

[Claim 2]

The method according to claim 1, one end is connected with a plurality of the wind box which is located corresponding to the reduced section of the raw material processing section, of the other end of the circulation line is the raw material processing periods, the balance within the first assembly of water in the circulation line materials handling plant, which top layer is in a corresponding position, supplying the reducing off-gas to the point having a temperature of 800 ℃ to 1000 ℃.

[Claim 3]

The method according to claim 2, wherein the on path to balance the movement, wherein when as full material treatments up to the point where the first assembly of water-reduction is done from the above-ignition, water-reduction period, the first assembly from the circulation line and the interval of the point for supplying the reduced off-gas and a point at which the first assembly of water reduction is completed, the second assembly of water sintering interval, and to the ignition, a region of up to supply an earlier point of the reducing off-gas, the reduction interval in which the raw material processing equipment by the supply of the reducing off-gas and the oxygen concentration is adjusted to not more than 10%, the sintering period is the oxygen concentration is adjusted to 15% or more.

[Claim 4]

The method according to claim 3, in the circulation line, one end of a plurality of wind boxes of, is associated with a plurality of wind boxes arranged corresponding to the reduction zone, wherein the first assembly of water-reduction reaction of a plurality of balance in the reducing zone and recovering the generated reduced off-gas return line; one end is connected to the return line, a first supply pipe for supplying the reducing-gas moving from the return line in the balance in the reducing zone; includes, the first supply pipe materials handling equipment is installed so as to be positioned corresponding to the point having the raw materials of the treatments, the first assembly temperature of 800 ℃ to 1000 ℃ top layer of water.

[Claim 5]

The method according to claim 4, wherein the atmosphere unit is provided on the extension path of the return line to be connected to the return line, a blower for providing a suction force to the return line; And installed to be connected to the return line between the windbox and the blower, by supplying the external air into the return line, a temperature control unit that the recovered gas into the return line to lower the temperature before it passes through the blower; including materials handling equipment to.

[Claim 6]

The method according to claim 4, wherein the atmosphere unit, one end by a connection with the return line and the other end is correspondingly positioned in the sintering section in the balance side, supplying a reducing off-gas to the sintering zone, the heat source in the sintering section providing a second supply pipe; materials processing including; the second is connected to the supply pipe, wherein the concentration is adjusted such that by supplying air to the second supply pipe, wherein the sintering zone the oxygen concentration is more than 15% control unit equipment.

[Claim 7]

6. A method according to any one ship is positioned at a side of the end of the material processing section, the second assembled water sintering is completed and sintered ore of the first assembly from the balance of water reducing end reducing light distribution portion; And a hood which is located between the fold portion to the ignition; contains, the other end of the circulation line is positioned corresponding to the point having the raw material processing section of the first assembly temperature of 800 ℃ to 1000 ℃ uppermost layer of the the hood being connected to the second supply pipe is connected to the hood material handling equipment in response to the sintering zone.

[Claim 8]

The system according to claim 7, a first hopper for storing said first granulated raw material for producing a reduced iron and, charged to the first assembly on the balance water moving to the lower side; Materials handling equipment including a; and the second hopper located in the rear of the first hopper, charged to the first of the granulated product are charged into a raw material for producing sintered ore after moving the balance to the second granulated product.

[Claim 9]

The method according to claim 8, located at one side of the fold portion, the raw material processing plant including a separator for separating the reduced iron ores, and the light distribution from the balance.

[Claim 10]

The method according to claim 9, wherein the separation device is any one material handling equipment to separate the sintered ore and reduced iron of a particle size and a magnetic force.

[Claim 11]

A plurality of the process of charging the first granulated for reduced iron production for a balance, respectively; the first second assembly for the sintered ore manufactured so as to be positioned above the first granulated in the balance have been assembled moving water is charged into the water the process of loading; the process of ignition of the first and second assembly by moving a plurality of balance each water is charged in the direction of ignition, the flame at the surface layer and the second assembly of water in the plurality of balance the respective contents; the flame of the ignition a plurality of balance, each as a period after the sintering zone and the sintering zone sintering of the second granulated product, the first granulated reduction of lists are arranged a plurality of the raw material processing section includes a reduction section wind that by sequentially moved to pass through the upper box, and that the second sequence processing a first assembly located in the water reduction reaction sintering and reaction, the lower side of a granulated product located on the upper side ; Including, the first process for the reduction of the granulated product is in the reduction zone before the first assembly procedure for recovering the reduced off-gas generated by the reduction reaction from the advanced balance water reduction; which is located in the reduction zone supplies the said reduced off-gas returned to the balance by controlling the oxygen concentration inside of the vehicle located in the reduction zone the process of creating a reducing atmosphere; raw material processing method comprising a.

[Claim 12]

The method according to claim 11, corresponding to the number of the reducing off-gas to the method for supplying a balance in the reducing region, with the raw material processing section of the balance within the first temperature is 800 ℃ to 1000 ℃ uppermost layer of the assembly point, material processing method for supplying the reducing-gas which is located in the vehicle.

[Claim 13]

The method according to claim 12, wherein the on path to balance the movement, wherein when as full material treatments up to the point where the first assembly of water-reduction is done from the above-ignition, water-reduction period, the first assembly from the circulation line and the interval of the point for supplying the reduced off-gas and a point at which the first assembly of water reduction is completed, the second assembly of water sintering interval, and to the ignition, a region of up to supply an earlier point of the reducing off-gas, the reduction interval material processing method that the oxygen concentration is adjusted to not more than 10%, and the sintering period is the oxygen concentration is adjusted to at least 15% by the supply of the reducing off-gas.

[Claim 14]

The method according to claim 13, wherein in the reducing exhaust gas in the process of recovery, the raw material processing section of the raw material processed for recovering the reduced off-gas generated by the reduction reaction of water first assembled from a plurality of the wind box which is located corresponding to the reduced section Way.

[Claim 15]

The method according to claim 14, wherein in the reducing exhaust gas in the process of recovering, before passing through the blower is recovered reducing the exhaust gas from the wind box of the plurality of provided on the recovery path of the reducing off-gas, mixing the recovered reducing the exhaust gas and the air the material processing method comprising the step of lowering the temperature below 500 ℃.

[Claim 16]

The method according to claim 13, wherein the second in the process of sintering the granulated product, the raw material processing method for supplying a corresponding balance in the reducing exhaust gas in the sintering section provides a heat source.

[Claim 17]

The method according to claim 16, the raw material processing method according to supply the reducing off-gas to the sintering zone, in addition to supplying the intake air from the outside to balance in response to the sintering zone, adjusting the oxygen concentration to 15% or more.

[Claim 18]

The method according to claim 11, the first raw material processing method of assembling at least a 200mm, 400mm or less height laminate is charged in the vehicle.

[Claim 19]

The method according to claim 18, wherein the formula height 2 assembled laminate 1, Formula 2 and Formula material processing method which is determined by the 3: [Formula 1] All raw process time (min) = a plurality of sintered balance length (mm) / Balance speed (mm / min) [equation 2] sintering time (min) = total raw process time (min) - a first reduction assembly of water required time (min) [equation 3] second height assembly of water (mm) = sintering time (min) * sintering process speed (mm / min)

[Claim 20]

The method according to claim 19, comprising: the light distribution of the first assembly of water reduction and a second assembly of sintered ore produced by the reduced iron and a second assembly of water sinter produced by the first assembly of water reduced from the water, sintering the end balance; the light distribution materials handling methods including; the process of separating the reduced iron, and sintered ore.

[Claim 21]

The method according to claim 20, according to the separation of the light distribution and reduced iron ores, raw material processing method of separating according to the first granules and the second assembly size of water or a magnetic force.

[Claim 22]

The gangjaeyong material produced by any one of the raw material processing method of claim 11 to claim 21.

[Claim 23]

The method according to claim 22, wherein the material is gangjaeyong gangjaeyong material used as the material of the iron making process of the blast furnace.