The invention will, more particularly, relates to a sintering machine and sintering method is according to the invention for adjusting the form of the layer to be glowing combustion sintering material for the production of sintered ores.
BACKGROUND
[2]
Sintered ore produced by the sintering process is a process for the manufacture of fine iron ores to a size suitable for blast furnace use.
[3]
This sintered ore in the manufacturing process and to screen the pseudo-particle sintering raw material feeding at a constant height in the sintering balance, and forced by suction the air from the lower side after the ignition firing the raw materials for sinter is produced a sintered ore.
[4]
This also will be described with reference to Figure 1, and is charged into the sintering raw material stored in the "upper light and the surge hopper (12, stored in) the upper light hopper 11, sintering the balance (50) transport, movement being sintered balance (50 ') is the ignition (30' passes through the lower part). The ignition causes a top surface layer of the sintering raw material accommodated in the ignition as a "flame sinter the balance (50 injected from) 30 '.
[5]
(30 ') to the ignition balance passing through the can conveying part (40) a step is taken to the travel direction, wherein the sintering truck (50') of the list are arranged plurality in the process advancing direction windbox portion (20 ') by of it passes through the upper side.
[6]
"Sintering passing through the upper side of the track (50 a wind box section 20 ') in and the attractive force generated in the downward direction, the ignition flame by the outside air to be drawn and moved in the downward direction, the sintered truck (50') when you get to the wind box section (20 ') located in the end point of the process in progress, the phone is flame far bottom of the sintering is complete, the balance sintering.
[7]
But is the preparation of a sintered ore by this process along the depth direction of the sinter layers having differences in heat distribution occurs. That is, in the upper layer of the sintering material layer windbox portion 20 'attraction phenomenon which lack the heat to the outside air inlet and the outside air, the heat quantity is excessive part of the lower layer after the temperature was raised over the course of combustion for the sintered fuel layer by the this should occur.
[8]
Thus, after a result, the sintered ore production process is completed, the upper layer is formed of one strength is excellent smooth surface because the solidification after the specific surface area is increased by reducing is to be produced excellent one low strength sintered ore, habucheungneun sinter layer is melt-reducing the problem of low sintered ore to be produced is generated.
[9]
Therefore, it became necessary to study of the sintering machine, and the sintering method for resolving the above problems.
Detailed Description of the Invention
SUMMARY
[10]
An object of the present invention to evenly combust the glowing material layer to be sintered is sintered combustion service group and a sintering method for the production of high-quality sintered ore.
Problem solving means
[11]
Located between times that the group is sintered according to an embodiment of the invention the hopper section and the raw material for sinter for supplying the raw material for sinter sintered discharge portion, conveyance portion, the sintered balance of circulating move the sintered balance in which the raw materials for sinter is seated section to the ignition which is located in the hopper portion rearward of the traveling direction, the sintered bottom is provided in the balance is less than a wind box portion and the temperature of the glowing layer in which the sintered material is burned 1200 ℃ for sucking the gas inside the sintered balance region to be supplied to, and independently of the supply of oxygen gas may include a glowing layer uniform composition unit which is located in the rear portion in the ignition of the sintering balance the traveling direction.
[12]
Furthermore, the glowing layer uniform composition unit based sintered according to an embodiment of the present invention, located in the rear end portion in the ignition of the sintering balance the traveling direction, the temperature of the glowing layer of the oxygen in the region of less than 1200 ℃ , to be provided independently of the oxygen supply and the oxygen supply part for independently supplying the gas after the oxygen supply unit of the sintering balance heading direction located at the end, and may include a fuel gas supply for supplying a fuel gas.
[13]
In addition, it can be characterized in that the oxygen supply unit of the sintering machine in accordance with one embodiment of the present invention, or provide a dog plurality in the transverse direction of the sintering balance, provided on both side end portions in the width direction of the sintering balance.
[14]
Further, the oxygen supply unit of-based sintered according to an embodiment of the present invention, there is provided in the interior of the hood member, wherein the hood member provided at an upper portion of the sintering balance, is connected to the oxygen pipe above the upper surface of the sintering raw material is connected to the nozzle member and the oxygen pipe for injecting oxygen gas may include a buffer member for adjusting the pressure of the oxygen gas supplied.
[15]
In addition, the hood member based sintered according to an embodiment of the present invention, lower end, in which the sintering balance and the height difference between the top surface and the part that is provided higher in the sintered material mounted on the sintered balance provided below 10cm that may be characterized.
[16]
In addition, in that the nozzle member of the sintering machine in accordance with one embodiment of the present invention is that the height (h) of the top surface of the sintering raw material provides to satisfy the expression of at least h = W / (2tan (0.5a)) It can be characterized. Here, W is the width (W) unit hood of the hood member on which the nozzle member is provided, a is an injection angle (a) of the oxygen gas being injected from the nozzle member.
[17]
Further, the sintering method according to another embodiment of the present invention, wind is provided on a lower portion of the charging process, the ignition process, the sintered balance, lighting the surface of the sintering raw material to supply the raw material for sinter in sintering balance circulating movement in the hopper portion so that the box is sucked gas inside the sintered balance, and supplied to the baking step, and is less than the area the temperature is 1200 ℃ of glowing layer in which the sintered material is burned to burn the raw material for sinter, unit to the ignition of the sintering balance the traveling direction in the oxygen supply which is located at the rear end portion may include an oxygen injection step to supply oxygen gas independently.
[18]
Further, the oxygen blowing process, the sintering method according to another embodiment of the present invention, the each of the oxygen supply portion, through which the dog plurality provided in the width direction of the sintering balance, the zone temperature is less than 1200 ℃ of the glowing layer, the oxygen in that individually adjusts the supply amount and supply time and the supply of the gas it may be characterized.
[19]
Further, the oxygen blowing process, the sintering method according to another embodiment of the present invention, be characterized by first taken into the sintered material mounted on the sintered balance-side end than the sintered material mounted oxygen gas the sintering balance center can.
[20]
Further, the oxygen blowing process, the sintering method according to another embodiment of the present invention, relative to the center of the height direction of the glowing layer is formed to be inclined as the sintering raw material is burned, and blowing the oxygen gas on the upper glowing layer , toward the height direction of the top of the glowing layer can be characterized by more blowing the oxygen gas.
[21]
Further, the oxygen blowing process, the sintering method according to another embodiment of the present invention can be characterized by the rate of oxygen to be blown in the sintering raw material smaller than the ejection speed of sound.
[22]
In addition, other exemplary feed rate of the oxygen gas in the sintering process according to the embodiment of the present invention, when the glowing layer thickness formed the sintering raw material is inclined as the combustion is less than 1.0% stacking thickness of the sintering raw material, wherein the windbox total amount of suction gas compared to more than 4.0% may be characterized in that provided less than 10%.
[23]
In addition, the supply amount of the oxygen gas of the sintering method according to another embodiment of the present invention, if the raw material for sinter are as combustion glowing layer having a thickness of 1.0% to 2.5% from the laminated thickness of the sintering raw material is inclined less than the that the wind box is provided in a total amount of suction gas compared to less than 2.5% to less than 8.0% it can be characterized.
[24]
In addition, the supply amount of the oxygen gas of the sintering method according to another embodiment of the present invention, when the glowing layer thickness formed the sintering raw material is inclined as combustion greater than 2.5% from the laminated thickness of the sintering raw material, wherein the windbox as compared to the total amount of suction gas above 1.0% it may be being provided to less than 6.5%.
Effects of the Invention
[25]
Sintering machine and sintering method of the present invention has an effect capable to blow oxygen to the portion that can not be glowing layer is uniformly formed due to insufficient sintering of the inner layer material during sintered ore production process heat activate the combustion.
[26]
Thus, to uniformly form the glowing layer in the height direction of the sintering material, it is possible to improve the quality of produced sintered ore.
[27]
That is, the sintering raw material in the upper layer is capable of sufficiently securing a glowing layer thickness required for sintering and increase the recovery rate to suppress or prevent the reduction in strength of the sintered ore by by increasing the flame propagation speed, amount of heat shortages.
[28]
Therefore, it is possible to improve process efficiency and productivity of sintered ore operation.
Brief Description of the Drawings
[29]
Figure 1 shows an conventional sintering.
[30]
2 and 3 are a front view showing an sinter of the present invention.
[31]
Figure 4 is a perspective view showing parts of oxygen supplied in the sintering machine of the present invention.
[32]
Figure 5 is a cross-sectional view illustrating a supply of oxygen in the sintering machine of the present invention.
[33]
Figure 6a and Figure 6b is a graph showing the temperature distribution along the height of the raw materials for sinter to be formed by a conventional-based sintered and sinter the invention.
Mode for the Invention
[34]
Hereinafter, with reference to the drawings will be described in a specific embodiment of the present invention in detail. However, the spirit of the invention nor be limited to the embodiments set forth for example, by the person skilled in the art to understand the scope of the invention is added to the other components within the scope of the same idea, change, deletion, etc., deterioration of the other invention or the invention would be able to readily suggest other embodiments be included within the scope of the idea, this will also be included in the inventive idea scope herein.
[35]
In addition, the same components, functions in the scope of the same idea appears in each embodiment will be explained with reference to the figures the same reference numerals.
[36]
[37]
The sintering machine and sintering method of the present invention relates to an invention for adjusting the form of a glowing layer that combustion of the raw material for sinter (r) for the production of sintered ore, out of sintered ore production process when the raw materials for sinter (r) of the inner layer heat glowing layer is on that can not be uniformly formed part can be blown to activate the oxygen combustion.
[38]
Thus, to uniformly form the glowing layer in the height direction of the raw materials for sinter (r), it is possible to improve the quality of produced sintered ore.
[39]
That is, the raw materials for sinter (r) in the upper part is in the fully secured glowing layer thickness required for sintering, and by increasing the flame propagation speed, suppressing or preventing a reduction in strength of the sintered ore according to the amount of heat shortages can increase the recovery rate.
[40]
[41]
More specifically, a front view illustrating an sintering of Figures 2 and invention Figure 3 is present, Fig. 6a and 6b, the temperature distribution along the height of the raw materials for sinter (r) is formed by a group prior art sintering and sintering the invention It is a graph showing.
[42]
That is, Figure 2 depicts an embodiment in which uniform composition unit 100 contains only oxygen supply portion 110 in the sintering machine of the present invention, Figure 3 is a uniform composition unit 100, the oxygen in the sintering machine of the present invention a supply part 110 and fuel gas supply portion 120, shows an embodiment in which each individually be included.
[43]
And, Figure 6a depicts the temperature distribution in the conventional sintering machine is not blown out independently oxygen, Figure 6b shows the temperature distribution in the sintering of the present invention to blow group independently oxygen.
[44]
Figures 2, 3 and Figs. 6a and times which Referring to Figure 6b, the hopper section 10 and the raw materials for sinter (r) group is sintered according to an embodiment of the present invention for supplying the raw materials for sinter (r) is sintered discharge portion 60 is located between the raw materials for sinter (r) is circular sintered balance 50 is mounted moves to the transport unit 40, the sintering balance (50) positioned behind the hopper unit 10 in the traveling direction is provided in the lower portion of the section 30, the sintered balance 50 to the ignition of the glowing layer that wind box section 20 and the raw materials for sinter (r) for sucking the gas inside the sintered balance 50 combustion the temperature is to be supplied to the under region 1200 ℃, independently supplying an oxygen gas, and may comprise a glowing layer uniform composition unit 100 which is located at the rear sintered balance 50, section 30 to the ignition of the traveling direction have.
[45]
Furthermore, the glowing layer uniform composition unit 100 for based sintered according to an embodiment of the present invention, located in the rear end section 30 with the ignition of the progress the sintering balance (50) direction, of the glowing layer an oxygen supply portion 110 and the oxygen supply section 110 and be provided independently, the sintered bogie 50 wherein the oxygen supply portion 110, the rear end portion in the traveling direction of the temperature is fed independently to the oxygen gas to less than the area 1200 ℃ located at, and may include a fuel gas supply portion 120 for supplying the fuel gas.
[46]
That is, by blowing, the temperature of the glowing layer independent of oxygen gas is less than the area at least 1200 ℃, will be presented a configuration which can uniformly glowing composition of the layer.
[47]
To this end, it can comprise a homogeneous composition unit 100, the basic configuration of the based sintered hopper unit 10, a wind box section 20, to the unit 30, the transport unit 40, the sintering balance (50 lit ), it may include a fold portion 60, the duct unit 70.
[48]
[49]
First of all, description will be given on the hopper unit 10, a wind box section 20, section 30 to the ignition, the transport unit 40, sintering the balance 50, the fold portion 60, the duct unit 70, the hopper section 10 is assembled after the upper light hopper 11, the upper light is stored that is charged to the lower surface of the sintered balance (50), charged into a top light above and the coke used in the ore material and the solid fuel mixture It may be of a surge hopper 12 to be blended raw material is stored.
[50]
In addition, the sintered balance 50 may be provided so as to be movable in one direction by receiving the raw materials for sinter (r), the transport unit 40 can transport a plurality of the sintered balance 50 in the step advancing direction, and , in the lighting section 30 it may be provided at a side of the surge hopper 12 in the traveling direction of the sintering balance (50) and the upper side of the sintered balance 50.
[51]
Here, as the ignition unit 30 to form the beginning of the combustion the raw materials for sinter (r) The raw materials for sinter (r) by spraying the flame to the surface layer of the sintering in the truck (50).
[52]
The wind box portion 20 is provided on the moving path of the sintering balance 50 can serve to draw the interior of the sintered balance 50.
[53]
In addition, is provided in the raw materials for sinter (r), that is a raw material may include a heat regulator for controlling the amount of heat in the layer, wind box section 20 of the group is the sintering of the present invention, the sintering balance (50) material layers are fired and a sensor for measuring the oxygen concentration in the exhaust gas temperature and the exhaust gas generated and may include a controller for controlling operation of the heat regulators by using the detection result from the sensor.
[54]
Here, the moving path of the sintering balance (50) forms a closed loop is sintered balance 50 is allowed to rotate in the caterpillar manner, the upper-side movement track of the closed loop is the raw material for sinter in the interior of the sintered balance 50 (r ) and the sintering zone, the lower-side travel path that sintering is Recurrence section to move to the upper-side travel path for the sintering process sintered blank balance 50, the discharge is complete, the sintered ore in the sintering boat portion (60).
[55]
At this time, the upper light hopper 11, the surge hopper 12, a lighting unit 30 is provided in the upper upper-side travel path, the wind box portion 20 has an upper is provided in the top lower side of the side of the movement route the interior of the sintered truck 50 which moves along the travel path side is sucked.
[56]
In addition, the sintered balance 50 sintered ore sintering is completed inside the ignition of the boat, portion 60 has an upper-side travel path is discharged in the course of the sintering truck 50 is moved from the upper-side travel path into the lower-side travel path It is positioned on the other side of the robu 30.
[57]
In addition, the raw materials for sinter (r) is later received from the upper light hopper 11 a refers to a blended raw material supplied from the surge hopper 12 and the upper light, and the raw materials for sinter (r) is charged into the sintering balance 50 It shall be referred to as a raw material layer.
[58]
The upper light hopper 11 is to prevent a is provided at a side upper portion of the upper-side travel path, Great directly sinter (r) formed in the bottom of the sinter the balance 50 of the sintered balance 50 outlet It is charged to the upper beam. Here, the upper light is preferably selected a sintered ore having a particle size of about 8 to 15㎜ nature of sintered ore.
[59]
The surge hopper 12 in the direction in which the sintered balance (50) is provided in the following the upper light hopper 11, sintering the balance of the raw materials for sinter (r) for the production of sintered ore in the sintering balance 50 ( charge to 50).
[60]
The surge hopper 12 has a depth direction with the grain size increasing from bottom to top of the sintered balance 50 in the width direction as the raw materials for sinter (r) the particle size segregation evenly charged, and sinter the balance (50) without a is smaller particle size to segregation was charged are preferred.
[61]
To the ignition section 30, the flame at the surface layer of the raw material layer formed in the surge hopper 12 is provided with the following raw materials for sinter (r) is charged to the sintering truck 50 in the direction in which the sintered balance 50 then the ignition is supplied.
[62]
The wind box section 20 the movement of the sintered balance (50) paths, and more specifically, is provided at the lower side of the upper-side travel path sucking the inside of the sintered truck 50 moving along the upper-side travel path, the wind box portion 20 can be provided over between the portion 30 and the fold portion 60 to the ignition.
[63]
There is, the duct unit 70 end of the wind box portion 20 can be provided, the duct unit 70 can include a duct 71, a dust collector 72, a chimney 73, a blue war etc. have.
[64]
Here, by forming the tip, the blower 74 of the duct 71 is installed inside the wind box portion 20 in a negative pressure (reversing pressure), and can suction the interior of the sintered balance (50) and the blower front (74) has got a dust collector 72 is installed, the filtration of impurities from the exhaust gas sucked through the wind box unit 20 to can be discharged through the chimney 73.
[65]
[66]
The homogeneous composition unit 100 to the stand-by temperature to the blown oxygen is less than 1200 ℃ part at least from the beginning of the layer glowing combustion by the unit 30 to the ignition, thereby inducing uniform composition of the glowing layer. That is, one separate from that of oxygen and a fuel gas such as a mixture of blown proposed a configuration in which only the oxygen gas blown into the glowing layer.
[67]
To this end, the homogeneous composition unit 100 may comprise an oxygen supply portion 110, a fuel gas supply portion 120. The
[68]
The oxygen supply portion 110 serves to blow only the oxygen and the fuel gas supply unit 120 is responsible for supplying the fuel gas. Here, the fuel gas supply 120, but can also supply oxygen mixed with the fuel gas, the oxygen supply portion (110) is characterized by supplying only oxygen.
[69]
That is, the region where only the supply of oxygen gas (S) is to be secured by the oxygen supply portion (110).
[70]
Thus, the principle of supplying only the oxygen gas to compensate for the insufficient amount of heat of the heat from the glowing portion layer in the sintering raw material (r) layer, because the promotion of the combustion by the oxygen gas.
[71]
That is, by a low-calorie partial formation of the oxygen gas at a higher concentration, will become more promote the oxidation reaction of the oxygen gas and the raw material for sinter that.
[72]
In addition, the oxygen supply unit 110 may include a nozzle member 111, the buffer member 112, a hood member 113, and thus for details will be described later with reference to FIG. 4 or FIG.
[73]
[74]
On the other hand, there is the effect that even if the composition of the stand-by blowing only oxygen gas, glowing layer can be found by reference to Figure 6a and Figure 6b.
[75]
That is, Figure 6a, the sintered balance 50, a central portion in the width direction (r1) and the side end portion (r2), the raw materials for sinter (r) by the depth of the layer formed by groups conventional sintering does not blow out independently oxygen gas It shows the results of the measurement of the temperature distribution.
[76]
Here, the central portion (r1) and the side end portion (r2) is commonly much it can be seen that there is formed a glowing layer of low temperature, and glowing layer central portion of the side edge portion (r2) for the same measurement depth than 1200 ℃ it can be seen that the temperature rise late form as compared to (r1).
[77]
The side end portion (r2) and the central portion (r1) between the glowing layer forming speed, and if a temperature difference, by the width difference between the direction of the sintering time of sintering the balance (50) occurs, the estimated this will cause a difference in the sintered ore quality in the width direction It can be.
[78]
And, as the depth is deeper is expanded glowing layer to present an area rising to near 1200 ℃, which occurs at a sintering balance 50 in the width direction central portion (r1), the side end portion (r2) in a temperature below 1200 ℃ it can be seen that appearing lower than the central portion (r1).
[79]
That is, the problem of glowing Chlef unevenness in the width direction of the group conventional sintering does not blow out independently oxygen gas as well as the problem of non-uniform formation of the glowing layer by a depth of the sintered balance 50, the sintered balance 50 at the same time will that exists.
[80]
[81]
On the other hand, Figure 6b, the sintered balance 50, a central portion in the width direction (r1) and the side end portion (r2), the depth of the raw material for sinter (r) each of the layer formed by groups sintering of the present invention to blow and independently of the oxygen gas It shows the results of the measurement of the temperature distribution.
[82]
Figure 6b is the result shown in the case of blowing oxygen gas into a target subjected to a glowing temperature lower layer depth (cheunghu than 0 to 20%) in the example of the present invention.
[83]
At this time, a 3.8% of the amount of wind box section 20 of the suction air flow by blowing oxygen gas, was fed 180 seconds. After the injection of oxygen gas, and I, the glowing layer at the same time in the sintering raw material (r) of the sintered balance 50 in the width direction central portion (r1) and the side end portion (r2) can be confirmed formed.
[84]
In particular, the whole in the surface layer portion of 10% depth cheunghu contrast to be formed glowing layer point forming the center portion (r1) and the side end portion (r2) at the same time, to check to rise to near the maximum attained temperature is 1200 ℃, 1200 ℃ nearby persistent time can also be seen that more than tripled compared to the previous.
[85]
Here, the glowing bed temperature even if a nail is not more than 1200 ℃, made of the sintered case last at a temperature of at least 1100 ℃ within 3-4 minutes bar, to be expected that such groups sintering of the present invention can improve the quality of sintered ore production have.
[86]
In addition, the side edge portion (r2) if the time of blowing oxygen performed ahead of the central portion (r1), to cheunghu may increase the recovery rate of the overall depth than the surface layer portion of 10% area, a detailed description thereof will refer to FIG. 4 described later in do.
[87]
[88]
4 is a perspective view showing an oxygen supply (110) in the sintering machine of the present invention, with reference end, the oxygen supply unit 110, the sintered balance 50 of the based sintered according to an embodiment of the present invention a dog or a plurality provided in the width direction, may be characterized in that provided on both side end portion (r2) in the width direction of the sintering balance 50.
[89]
Further, the oxygen supply portion 110 of the based sintered according to an embodiment of the present invention, there is provided in the interior of the hood member 113, the hood member 113 is provided at an upper portion of the sintering balance 50, the buffer member is connected to the oxygen pipe (111a) for adjusting the pressure of oxygen gas to be supplied is connected to the nozzle member 111 and the oxygen pipe (111a) for injecting the oxygen gas to an upper surface of the sintering raw material (r) ( It may include 112).
[90]
In addition, the hood member 113 of the based sintered according to an embodiment of the present invention is part the lower end is provided higher in the sintering balance 50 and the raw materials for sinter (r) seated on the sintered balance 50 the height difference between the top surface and can be characterized in that provided below 10cm.
[91]
[92]
Here, the oxygen supply unit 110 may be installed in the part 30 next position in the ignition in the direction in which the sintered balance 50, or installed with respect to the width direction of the front surface of the sintered balance 50, It can be provided for a portion.
[93]
That is, when both side ends (r2) in the width direction of the sintering balance 50 is a low temperature of the glowing layer compared with the central portion (r1) that most-environment, the supply of the oxygen gas by the oxygen supply portion 110 sintering the balance 50, both side edge portion (r2) in the width direction is preferable to be provided so that more blow than the central portion (r1).
[94]
[95]
In particular, the oxygen supply unit 110 to provide an individual with a nozzle member 111 to a plurality of the hood member 113, it may be provided to supply an oxygen gas by the position of the hood member 113. That is, the sintering may be provided both side ends (r2) in the width direction of the vehicle (50) only to blow oxygen gas, may be provided to evenly supply the oxygen gas with respect to the entire width direction of the sintering balance 50 that will.
[96]
[97]
In other words, as shown in Figure 4, the oxygen supply unit 110 is located in the upper sintered balance 50, the surge hopper 12 is divided gates can have as much as a split type hood member 113. That is, each hood member 113 of each divided section was installed and the partition wall forms a separate space, the oxygen gas injected from the nozzle member (111) for supplying an oxygen gas can be prevented from being diffused into the nearby.
[98]
The nozzle member 111 is installed on one or more pieces multiple independent space of the hood member 113, a minute may be changed according to the number of squares.
[99]
When the oxygen supply portion 110 of the hood member 113 is provided to increase the raw material surface layer is higher than the sintering balance (50) side wall is, relative to the lower end and the raw materials for sinter (r) surface layer portion upper surface of the hood member 113 to 10 are provided at intervals of a cm or less, preferably provided in the case side walls is high, the interval of no more than 10 cm relative to the lower end portion and the sintered balance 50, the side wall of the hood member 113 of the sintered balance 50 Do. This is to minimize the cross-like effects coming from outside.
[100]
On the other hand, the injection angle (a) for the supply of oxygen gas from the nozzle member 111 may be set according to the division number (the surge hopper 12 is divided gates or more of the plurality) of the nozzle member 111 desirable. Thus for a detailed description it will be described later with reference to FIG.
[101]
[102]
Figure 5 is the nozzle member 111, the raw materials for sinter (r) of the sintering machine in accordance with one embodiment of the lower, refer to it as a cross-sectional view showing an oxygen supply portion 110 in the sintering machine of the present invention, the height (h) of the upper surface is provided to satisfy the expression of at least h = W / (2tan (0.5a)) may be characterized. Where, W is a hood (113a), the width (W) unit of the hood member 113 is provided with a nozzle member 111, a spraying angle (a of the oxygen gas being injected from the nozzle member 111 )to be.
[103]
That is, the width of it is desired bar is front injected in, of oxygen gas is injected spray angle (a), the hood member 113 of the nozzle member 111 is the oxygen gas the sintering raw material (r) to be supplied to increase the ( to set in consideration of the W).
[104]
That is, when the width (W) of the specific injection angle (a) with a hood member 113 is fixed, by adjusting the height of the nozzle member 111, the oxygen gas with respect to the front surface of the raw materials for sinter (r) It will be able to be injected.
[105]
In addition, the nozzle member 111 and the raw materials for sinter (r) The distance high-temperature refractory material chunk of but differently applied depending on the shape, coming off in the lighting from the inner portion 30 of the nozzle member 111 of the surface layer is an oxygen gas that it is desirable to prevent the more than 20 cm in order to avoid contact with the nozzle member 111 it is injected.
[106]
[107]
Then, the sintering method according to another embodiment of the present invention is to burn the surface of the charging process, the raw materials for sinter (r) for supplying the raw materials for sinter (r) as a sintering truck 50 is moved circulating in the hopper section 10 ignition process, firing process and the raw materials for sinter (r) of, and a wind box provided below the sintered balance (50) sucks the gas in the interior of the sintered balance (50), combusting the raw materials for sinter (r) the combustion the glowing bed temperature of which is to be supplied to the under region 1200 ℃, the sintered balance 50, oxygen blowing to independently supply the oxygen gas in the oxygen supply portion 110, which is located in section 30, the rear end portion in the ignition of the traveling direction It may include a process.
[108]
That is, the height direction of providing further comprises the step of blowing oxygen blowing only oxygen gas, raw materials for sinter (r) is capable of uniformly forming a layer formed of the glowing.
[109]
Here, the ignition process is carried out by lighting the raw materials for sinter (r) in the unit 30 to the ignition and firing process there is the practice to form a glowing layer as a starting point for ignition of the unit 30 to ignite additional fuel It can be added to the gas.
[110]
However, in the present invention it accepts the independently oxygen gas separately from the flue gas, to form a uniform layer glowing.
[111]
In other words, the oxygen blowing process may be the oxygen gas characterized in that the temperature is injected into the less area 1200 ℃, which not less than 1200 ℃ in glowing layer because it is added to the unnecessary part of separate columns, of less than 1200 ℃ and blowing the oxygen gas to the point of promoting the oxidation reaction is capable of further increase the service temperature of the glowing layer.
[112]
[113]
In addition, another embodiment of the oxygen injection step of the sintering process according to the embodiment of the present invention, the each of the oxygen supply portion 110 in which a plurality dog ​​is provided in the width direction of the sintering balance 50, the temperature of the glowing layer 1200 ℃ to less than the area, adjusting the supply amount and supply timing of the oxygen gas separately and can be characterized in that the supply.
[114]
That is, by setting different in the width direction of the sintering balance (50) to blow oxygen gas, which will also be formed uniformly in the width direction to form a glowing layer.
[115]
Since usually the raw material for sinter (r) is faster burning than the sintering balance the side end portions a central portion (r1) of 50 in the width direction (r2), it is desirable to more of supplying the oxygen gas to the side edge portion (r2).
[116]
[117]
Alternatively, the oxygen blowing process, the sintering method according to another embodiment of the present invention, than the raw materials for sinter (r) seated oxygen gas the sintering balance 50, a central portion (r1), the first side of the sintered balance 50 end It can be characterized by the blow-sintered material (r) seated on the (r2).
[118]
That is, to activate the glowing layer formed in the sintered material (r) seated on the side edge portion (r2) of the sintered balance 50 uniform in the width direction glowing layer formed of the sintered balance 50.
[119]
[120]
On the other hand, the oxygen blowing process, the sintering method according to another embodiment of the present invention, relative to the center of the height direction of the glowing layer formed of the sintered material (r) is inclined as combustion, the oxygen gas on the upper glowing layer a blow and, toward the height direction of the top of the glowing layer can be characterized by more blowing the oxygen gas.
[121]
In other words, the glowing layer by supplying an oxygen gas into the glowing top layer formed of a relatively low induced to form more or thicker layers glowing.
[122]
In addition, by providing to the top of the glowing layer because the thin glowing layer is formed as a starting point for ignition supply the most oxygen gas on top of the glowing layer, and adjusting the amount of continuous oxygen gas supply, even more of the glowing layer It can be confirmed a uniform formation.
[123]
[124]
In addition, the oxygen blowing process, the sintering method according to another embodiment of the present invention can be characterized by the rate of oxygen to be blown to the raw materials for sinter (r) smaller than the ejection speed of sound.
[125]
That is, by preventing the choking phenomenon (choking) occurs in the blow of the oxygen gas smaller injecting the oxygen gas than the speed of sound, to avoid the problem, the pressure at the nozzle member (111) for injecting the oxygen gas to be high and damage it is possible.
[126]
[127]
Meanwhile, another exemplary feed rate of the oxygen gas in the sintering process according to the embodiment of the present invention, when the glowing layer thickness of the sintering raw material (r) is as combustion obliquely formed is less than 1.0% stacking thickness of the sintering raw material (r) the can being provided with the total gas amount is less than 4.0% compared to 10% in which the windbox suction.
[128]
In addition, the supply amount of the oxygen gas of the sintering method according to another embodiment of the present invention, the raw materials for sinter (r) a stack thickness of 1.0% over 2.5 as the combustion is glowing layer thickness is formed to be inclined the raw materials for sinter (r) % less than in the case, it may be characterized in that provided as the total gas amount to less than 2.5% compared to 8.0% in which the windbox suction.
[129]
In addition, if more than, other exemplary feed rate of the oxygen gas in the sintering process according to the embodiment of the present invention, the raw materials for sinter (r) is a glowing layer thickness is inclined as combustion form 2.5% stacking thickness of the sintering raw material (r) the can being provided with the total gas amount is less than 1.0% to 6.5% in which the windbox suction.
[130]
This is presented the ratio of the oxygen gas is most preferably supplied to the layered position of the feed rate and the raw materials for sinter (r) of oxygen gas.

Claims
[Claim 1]
Positioned in the hopper section rear portion of the sintered balance traveling direction; located between ship which is sintered with a hopper section and the raw materials for sinter to supply sintering material discharge portion, conveyance portion for circulating move the sintered balance in which the raw materials for sinter is seated section to the ignition; is provided below the sintered balance unit windbox for sucking the gas inside the sintered balance; Including; and glowing layer uniform composition unit to be supplied to the temperature is less than the area is 1200 ℃ of glowing layer in which the sintered material is burned, and independently supply oxygen gas, where the unit back to the ignition of the sintering balance the traveling direction sintering machine to.
[Claim 2]
The method of claim 1 wherein said glowing layer uniform composition unit is located in the part rear end to the ignition of the sintering balance the traveling direction, the oxygen which the temperature of the glowing layer supplied independently to the oxygen gas in an area of ​​less than 1200 ℃ supply; And a fuel gas supply portion that is located in the oxygen supply portion after the end of the oxygen supply and independent, to be provided to the sintered balance the traveling direction, and supplies the fuel gas; sintering machine comprising a.
[Claim 3]
The method of claim 2, wherein the oxygen supply portion, a dog or provided plurality in the transverse direction of the balance sintering, sintering machine, characterized in that provided on both side end portions in the width direction of the sintering balance.
[Claim 4]
The method of claim 2, wherein the oxygen supply portion, the hood member provided at an upper portion of the sintering balance; is provided in the interior of the hood member, is connected to the oxygen pipe nozzle member for injecting the oxygen gas to an upper surface of the sintering raw material .; And a buffer member for adjusting the pressure of oxygen gas to be supplied is connected to the oxygen pipe; sintering machine comprising a.
[Claim 5]
The method of claim 4, wherein the nozzle member includes sintering machine .h = W / (2tan (0.5a)), characterized in that the height (h) of the upper surface of the sintered material is provided to satisfy the expression of at least the following here, W is the width (W) unit hood of the hood member on which the nozzle member is provided, a is an injection angle (a) of the oxygen gas being injected from the nozzle member.
[Claim 6]
Loading Process for supplying a raw material for sinter in sintering balance circulating movement in the hopper unit; the surface of the raw material for sinter ignition process for the ignition; and a wind box provided below the sintered balance sucking the gas inside the sintered balance, the baking process for burning the raw material for sinter; A; and the oxygen blow step of independently feeding the oxygen gas from the oxygen supply unit which is located in the part rear end to the ignition of the sintering raw material, so that the temperature of the glowing layer combusted supplied to less than the area 1200 ℃ sintered balance the traveling direction sintering comprises.
[Claim 7]
The method of claim 6, wherein the oxygen blowing process, the each of the oxygen supply portion, through which the dog plurality provided in the width direction of the sintering balance, the zone temperature is less than 1200 ℃ of the glowing layer, the supply amount and supply timing of the oxygen gas sintering characterized in that the individually adjusted and supplied.
[Claim 8]
The method of claim 7, wherein the oxygen blowing process, the sintering method, comprising a step of blowing the first sintered material mounted on the bogie-side end than the sintering the sintered material mounted oxygen gas balance in the sintered center.
[Claim 9]
The method of claim 7, wherein the oxygen blowing process, with the center of the height direction of the glowing layer is formed to be inclined as the sintering raw material is burned, and blowing the oxygen gas on the upper glowing layer, the height direction of the glowing layer toward the top, the sintering method according to claim 1, further much blowing the oxygen gas.
[Claim 10]
The method of claim 7, wherein the oxygen blowing process, the sintering method, comprising a step of the rate of oxygen to be blown in the sintering raw material smaller than the ejection speed of sound.