Specification

The title of the invention: the sintering apparatus and a sintering method
Art

[1]
The present invention relates to, and more particularly, to a sintering apparatus and a sintering process to control the combustion process of the raw material or to improve combustion efficiency which can improve the quality and productivity of the material relates to a sintering apparatus and a sintering method.
BACKGROUND

[2]
Generally, the sintering step, the minute is charged with iron ore and additives and fuel (min coke, anthracite), and then subjected to mixing and put in a humidity such as a drum mixer, a predetermined height in the sintering balance. Then, after using the combination of ignition spark to the surface of the raw material, the sintering of the sintered raw material compounding is in progress, while the air suction force from below. Then, the sintered ore produced by sintering the light distribution through the crusher (crusher) is cooled by the cooler (cooler). Then, the sintered ore of which the ease of particle size within the blast furnace and charged into the reaction sintered ore is transferred to a blast furnace, the sintered ore has a small spectral size is classified as semi-glossy is used again as the raw material for sinter.
[3]
This, the sintering process is performed by applying a suction force to the sintered form to balance the negative pressure in the wind box disposed at the lower sintering balance. When the main blower driving a partial vacuum is formed in the wind box. The sintering of the blended raw material loaded into the sintered balance proceeds as from the surface of the ignition material incorporated by the negative pressure of the windbox air is sucked to the lower side. Sintered material is complete, it is cooled by the cooler gas being injected through the crusher by the cooler.
[4]
However, when the sintering raw material is sintered in the formulation balance, since the heat is accumulated in the lower portion to the combustion occurring by air being drawn into the lower portion from the upper portion of the sintering temperature is high balance in the lower layer than the upper layer. Thus, it proceeds to the sintering reaction is not sufficient, the raw material top, the quality and productivity of raw material produced may be degraded.
[5]
In addition, conventionally, a gas cooler for cooling the air in the exhaust gas or sintered ores drawn through the windbox did so discharged outside. These gases comprise a component which may pollute the environment, it can be had with a number of thermal energy while passing through the high temperature of the sintered ore. Accordingly, when discharged to the outside as such gas, and may result in environmental pollution, there is a lot of energy loss.
Detailed Description of the Invention

SUMMARY

[6]
The present invention provides a sintering apparatus and a sintering method which can control the combustion process of the material.
[7]
The present invention provides a sintering apparatus and a sintering method which can cycle through the gas generated during the sintering process.
[8]
The present invention provides a sintering apparatus and a sintering process to improve the quality and productivity of raw material.
Problem solving means

[9]
The present invention is arranged to be movable along the movement path, is arranged on the upper portion of the plurality of sintered balance, the sintered balance that is the raw material is charged therein, the ignition for injecting a flame to the upper surface of the raw material, the sintered balance and a plurality are arranged along the moving path in the lower portion, is disposed in the windbox, one side of the moving path of sintering the raw material by sucking air in the lower direction of the sintering balance, the cooler gas in the sintered ore discharged from the sintering balance connecting with the cooler, and the cooler is supplied and includes a first cycle for supplying at least a portion of the cooler gas is supplied to the raw material to the upper portion of the sintering balance.
[10]
It said first portion being connected to one cycle, and comprising a fuel gas supply for supplying gas fuel to said first circular portion.
[11]
The first rotation unit, the sintered first hood balance is arranged on the upper portion extending along said travel path, one end connected to the said cooler and the other end is connected to the first coupled to the first hood line, and the first a first blower is provided in the connecting line.
[12]
The wind is connected to the portion of the box, comprises a second circular portion which supplies the intake air to the windbox of the portion to the upper portion of the sintering balance, the moving path, charging period, the raw material is charged into the sintering balance and the ignition period for lighting the above described material, and a sintering zone in which the raw material is sintered, said first circular portion and the second circulation unit supplying the air sucked or the cooler gas in the sintering section in the ignition .
[13]
Said second circular portion, the second hood being connected to a portion of the wind box is arranged on the upper portion of the suction pipe, the sintered balance to form a space where air is received within and extends along the movement path, one end of the connected to a suction pipe and to the other end and a second blower provided in the second connecting line coupled to the hood 2, and the second connection line.
[14]
Wherein the first hood part is provided in the first circulation are arranged between and in the ignition and the second hood, it said first hood is located at the upper portion of the wind box which is disposed before the 1/2 point of the movement route .
[15]
From one end, after the point at which the combustion ends of the raw material of the second hood is arranged between the upper part of the wind box which is disposed up to the rearmost on the basis of the movement route.
[16]
The length extending in the second hood is a length of more than 1 × number of the windbox of the windbox connected with the suction pipe.
[17]
The suction pipe, the temperature of the intake air from the 1/2 point of the movement path is connected to the wind box disposed between the point where the maximum.
[18]
The movement path, the raw material is sintered charging period in which charged into balance, lighting period in which the raw material is ignited, and a sintering zone in which the raw material is sintered, said first circular portion and the gas fuel supply is sintered the interval to supply the gas cooler and a gas fuel.
[19]
The gaseous fuel supply unit comprises a supply line connected to form a path for the fuel gas moves therein, the supply line is connected, is connected to the first connecting line which is provided on the first circulation unit.
[20]
The gaseous fuel supply unit, forming a path for the gaseous fuel movement inside and one end of the fuel supply line connected to the first hood, said first circular portion, and is provided at one end of the fuel supply line said sintering the gaseous fuel It includes an injector for injecting into the upper balance.
[21]
The gas fuel is supplied is diluted to below the lower limit concentration of combustion.
[22]
The present invention provides a method for producing sintered ore, comprising: charging the raw material inside the sintered truck moving along the movement route, the process of igniting the material, comprising the steps of: sucking the air in the lower direction of the material, discharging the sintered ores and, further comprising the step of step of supplying a cooler gas to the sintered ore, supplying at least a portion of the cooler gas supplied to the sintered ore in the sintering raw material in the truck,
[23]
The process of supplying the gas cooler to the raw material is supplied to the gas cooler to the wind box arranged above the previous one-half point of the movement route.
[24]
The process of supplying the gas cooler to the raw material in the sintering balance is, the process, and temperature of the gas cooler to measure the temperature of the cooler gas is above the set temperature and supplies the cooler gas in the raw material.
[25]
After supplying the gas cooler to the raw material in the sintering balance, and it supplies a mixture of fuel gas to the gas cooler.
[26]
After sucking the air to the lower direction of the raw material, and supplies the portion of the intake air in the raw materials in the sintering balance.
[27]
Process for supplying a portion of the inhaled air in the raw materials in the sintering balance is, the intake air from the region between the point where the temperature of the air sucked from the 1/2 point of the movement route is maximized.
[28]
The process of mixing the gaseous fuel is, before the supply of the gas cooler start, at the same time that the supply of the gas cooler start, or to supply the gaseous fuel is started after the supply of the gas cooler.
[29]
Process for supplying a mixture of fuel gas to the cooler gas is supplied to the cooler gas and the gaseous fuel after the point at which the raw material is ignited by sintering the balance top to move through the 1/2 point of the movement route.
Effects of the Invention

[30]
According to embodiments of the present invention, by supplying a cooler gas with the hot fuel gas to the upper portion of the raw material, it is possible to control the combustion process of the material. Fuel gas may increase the time that the raw material is burned. Thus, it is possible to easily raise the temperature of the raw material, the time that the raw material can maintain a state of high temperature can be increased. Accordingly, the improved quality of the raw materials is generated, the amount of which can be produced using a raw material In contrast the raw material can be increased to improve the productivity.
[31]
In addition, by circulating the gas cooler occurred while cooling the sintered ore and a sintering exhaust gas generated during the sintering process to sinter the balance top can be involved in sintering. If the supply of these raw materials in the exhaust gas in the process of sintering the raw material has a combustion efficiency is improved, and sintering the top layer can be inhibited or prevented from being cooled due to the outside air. Thus, the amount of sintered ore can be used to produce a contrast material introduced can be increased to improve the productivity.
[32]
Also, it is sintered to be the volume of air blown out by internal sintering balance decreases as proceeding, by increasing the air volume of the portion of the air volume is reduced can improve the quality of sintered ore is produced.
Brief Description of the Drawings

[33]
1 shows a sintering apparatus according to an embodiment of the present invention.
[34]
Figure 2 is a view showing the characteristics of the cross-sectional shape, and the exhaust gas of the sintered layer of the sintering step of a raw material according to an embodiment of the invention.
[35]
Figure 3 is a view of the sintering apparatus in accordance with another embodiment of the present invention.
[36]
Figure 4 is a view showing a sintering apparatus according to an embodiment of the present invention.
[37]
5 is a flowchart showing a sintering process in the embodiment;
[38]
Figure 6 is a view showing a test port to the present embodiment.
[39]
7 is a graph showing the temperature change within the sintered layer according to an embodiment of the invention.
Best Mode for Carrying Out the Invention

[40]
With reference to the accompanying drawings, the present will be described in more detail in an embodiment of the invention. However, the present invention is not limited to the embodiments set forth herein will be embodied in many different forms, but the embodiment are also the teachings of the present invention to complete, and will fully convey the concept of the invention to those of ordinary skill It will be provided to make known. In order to specifically describe the invention, the drawing is the same numerals refer to like elements in the drawings, it may be exaggerated.
[41]
[42]
1 is a diagram showing the sintering apparatus according to an embodiment of the present invention, Figure 2 is a view showing the characteristics of the cross-sectional shape, and the exhaust gas of the sintered layer of the sintering step of a raw material according to an embodiment of the invention.
[43]
1, the sintering apparatus 100 is arranged to be movable along the movement route, a plurality of sintering that the raw materials are charged to the inner balance 130, the sintered balance 130 according to an embodiment of the present invention the lower direction of the ignition, which is arranged on the upper, the injection of the flame to the upper surface of the raw material 110, the lower portion of the sintering balance 130 and a plurality is arranged along the moving path, the sintered balance 130 Wind for sucking the air sintering the raw material box 140, is arranged on one side of the travel path, the cooler 172, and the cooler (172 for supplying a cooler gas to a sintered ore discharged from the sintering balance 130 ) it is connected to, a first circulation unit 180 to be supplied to the top of the cooler at least a portion of the sintering gas balance 130 is supplied to the raw material. Further, the sintering apparatus may further include a charging unit 120, a pulverizing unit 171, exhaust unit 190, and a second circulation unit 150. At this time, the cooler gas is supplied to a sintered ore cooling the sintered ore may be a flue gas cooler.
[44]
This sintered balance 130 in may be arranged to rotate in the caterpillar manner, to form a closed loop to form a Recurrence path of movement of the upper-side path and the lower side. The movement route and sinter a raw material charged into the raw material inside the sintered balance 140, the Recurrence path by moving the empty sintering balance 130, the light distribution of sintered ore sintering is complete, thereby Recurrence a movement path of the upper side to the sintering process.
[45]
Moving route is provided along the longitudinal direction, and sintering the balance 130 to be moved rearwardly from the front of the moving path. Further, the movement route, the mobile is located in the front line is positioned at the rear of the charging period, charging interval is added the contents placed ignition interval is arranged in the lighting unit 110, and located at the rear the material is sintered in the ignition region of the path which may include a sintering zone. That is, the charge period is the period in which raw materials are charged or geupgwang into sintered balance 130, the ignition interval and period in which the raw material is ignited, the sintering period is to move the ignition flame to the upper surface of the material to the lower sintering a raw material the interval.
[46]
Sintering the balance unit 130 to form a space in which the raw material is received within, and is installed on a plurality of endless track in one direction may move the movement route and Recurrence path. Therefore, sintering the balance 130 may be sintered after moving the movement path and Recurrence path charging the raw material into the discharge or light distribution.
[47]
Loading unit 120 is arranged on the charging section of the movement path. That is, the charging section may include a length field, such as the longitudinal length of the charging section 120. Loading unit 120 may form a movement path of the hopper and the material to be placed on top of the sintered balance 130, to form a space in which the raw materials are stored therein, and includes an inclined face a charging chute. Therefore, when discharging the material from the hopper to the bottom, the material can be guided into the interior of the sintered truck 130 via a charging chute of the lower side.
[48]
To the ignition unit 110 is disposed in the ignition region of the movement path. That is, the lighting interval may include a length field, such as the longitudinal length of the ignition 110. A lighting unit 110 then ignited by the flame supplied by the raw material in the upper surface is disposed behind the upper and loading section 120 of the sintering balance 130, sintering the balance 130.
[49]
Wind box 140 is disposed under the sintered balance 130, a plurality of the movement along the path. A windbox (140) and more specifically may be provided over between the ignition 110 and the period in which the raw material is discharged from the sintering balance 130. Wind box 140 draws in air to the lower sintering balance 130 direction. To, and is drawn into the sintering balance 130 wind box 140 of the air passes through the material within the sintered balance 130 of the upper bottom. Therefore, it is moved to the lower surface of the windbox are the ignition flame to the upper surface of the sintering raw material in the balance 130 by the drawn-in air by 140 raw material to the raw material to be sintered. However, the interval is provided with a wind box 140 can vary without being limited thereto.
[50]
Discharge unit 190 serves to be connected to a plurality of wind box 140 provides the suction force to wind box 140 and discharging the drawn air to the outside. Discharge section 190, is connected to the lower portion of the plurality of wind box 140, a dust collector provided in a suction chamber 191, suction chamber 191 to form a space through which air can be accommodated and moved therein (192 ), comprises a main blower 193, and a main blower 193, the chimney 194 is disposed in the rear is disposed to the rear of the dust collector (192) relative to the path of air movement. Thus, when the main blower (193) generating a suction force, the air to the lower side from the upper side through the wind box 140 is sucked, the suction air is moving toward the main blower 193 according to the suction chamber 191, the dust collector ( after the filtration through a 192) through the main blower 193 is discharged to the chimney (194). In other words, it is a main blower 193 to the suction air of the upper sintered balance 130 by forming a negative pressure inside the windbox 140. At this time, air can move front to back in the suction chamber 191.
[51]
Crushing unit 171 may be disposed in the portion where the last room of the spaced side that is, the movement route of the movement path. Therefore, it is crushed by the crushing part 171, when the sintering is sintered ore in the form of light distribution lumps complete supplied to the crushing unit 171.
[52]
Cooler 172 is arranged separately from the crushing unit 171. The cooler 172 that is a raw material, is formed to have a space in which the sintered ore therein. Therefore, when the sintered ore is supplied to the cooler 172 is crushed in the crushing unit 171, it can be supplied to the cooler gas into the inner space through the gas cooler, such as injector nozzles. Thus, while the cooler gas is passed in contact with the sintered ore can absorb thermal energy of the sintered ore. Sintered ore is through this process are selected in an appropriate size are charged into the blast furnace (not shown), a sintered ore having a smaller size is classified as a semi-glossy and can be reused as the raw material for sinter.
[53]
However, there is the air in a sintering exhaust gas sucked through the wind box 140 has a heat energy as it passes through the sintered layer, cooler gas having passed the sintered ore comprises the components that may contaminate the environment, including dust, high temperature It can be had for a lot of heat while passing through the material. Therefore, when the discharge of these gases to the outside, can result in environmental pollution, there is a lot of energy loss. Therefore, it is possible to include a first circular portion 150 and the second circulation unit 180 according to an embodiment of the present invention supplies air or a gas cooler in a sintering zone and circulation.
[54]
[55]
A first circulation unit 180 is connected to the cooler 172 based at least in the suction portion of the cooler gas generated in the cooler 172, and serves to supply to the upper sintered balance 130. A first connection to the rotation unit 180, the first hood 183, one end of the cooler 172 is disposed above the sintering balance 130 is extended along the movement route and the other end of the first hood ( 183) a first connector (181) connected to, and a first blower 182 is provided in the first connector (181). Further, the first circulation unit 180 may include a temperature measuring instrument (not shown) and a controller (not shown).
[56]
The first hood 183 is placed on top of the sintered balance 130. The first hood 183 may be placed relative to the travel path before 1/2. That is, the first hood 183 may be disposed between the ignition 110 and the second hood 154, which will be described later. In addition, the first hood 183 is provided along the longitudinal direction, it can be gradually from top to bottom is formed to be wider in width. Thus, it is possible to supply the gas cooler and the gas fuel from the beginning of the sintering zone in the upper sintered balance 130 to move through the 1/2 point of the movement route.
[57]
Coolers of the cooler gas from the 172 as a starting material is the temperature rises, because the heat energy absorbed in the high-temperature raw material have, and contains the dust generated in the raw material. 2, the sintered layer located at the upper portion of the combustion material exchange between the ignition 110 and the 1/2 period. Therefore, when cooling the raw material to supply the hot gas cooler by absorbing heat energy to the top of the material between the ignition 110 and the 1/2 period through the first hood 183, and the cooler the gas is passed through the raw material supplying thermal energy to the material it is possible to prevent the temperature of the material decreases during the combustion of the raw material becomes more easily, a high-temperature cooler gas is supplied or inhibited.
[58]
In addition, it is possible to re-use a cooler that has absorbed the heat energy gas reduce energy use. In order to discharge the gas cooler to the outside, it is necessary to perform an operation of removing dust in the gas cooler. However, since the supply of the cooler gas containing dust to within the raw material sintering truck 130, it is possible to re-use the dust as raw materials, it is not necessary to perform a separate action to remove the cooler gas within the dust equipment is simplified work this efficiency can be improved.
[59]
The first connector 181 is one end connected to the cooler 172 and the other end is connected to the first hood 183. In addition, the first connection pipe 181 forms a path for the cooler gas moves therein. Thus, the user to absorb at least a portion of the cooler gas supplied as raw material in the cooler 172 to the end of the first connection pipe 181 and discharged by supplying this cooler gas to the first hood 183, toward the lower raw material is.
[60]
A first blower 182 is disposed in the movement path of the first connection pipe 181. That is, the cooler gas. A first blower 182 serves to provide a suction force on one end of the first connector. Therefore, if the cooler 172 is supplied to the cooler gas, and a first blower (182) in providing a suction force to the first connecting pipe 181, the cooler gas in the cooler 172 by absorbing the heat energy while passing through the raw material after the cooler gas is sucked into one end of the first connector 181 can be prevented from being discharged to the external cooler 172.
[61]
Temperature measuring devices may be provided and serves to measure the temperature of the cooler gas to move the first connection pipe 181 to the first connector (181). Temperature measuring devices may be used with a variety of sensors that can measure the temperature.
[62]
The controller is coupled to the temperature measuring instrument and a first blower 182 and serves to control the operation of the first blower 182. The reason for supplying a cooler gas sucked from the cooler (172) for the source between the ignition 110 and the 1/2 point is to help the combustion material. In order to assist the combustion the raw material should be a high temperature gas cooler. If the temperature of the gas cooler is too low, but rather can interfere with the burning away the heat of the raw material.
[63]
Thus, by measuring the temperature of the cooler gas flowing through the first connection pipe 181 to a temperature measuring instrument it is possible to control the operation of the first blower 182. For example, the controller is a cooler when the temperature of the gas is less than 100 degrees Celsius, the cooler gas to stop the operation of the first blower 182 is measured by temperature measuring devices can be stopped from being supplied to the first hood 183 . On the other hand, the controller may be the case if the temperature of the cooler gas measured at a temperature measuring instrument not less than 100 degrees Celsius, by operating the first blower (182) supplying a cooler gas to the first hood 183. Therefore, by supplying only the gas cooler in the high-temperature raw material to the combustion consideration positioned above the sintering raw material layer through a cooler of high-temperature gas can help the combustion.
[64]
On the other hand, the sintering apparatus according to an embodiment of the present invention may further comprise a second circulation unit 150. The Second circulation unit 150 serves to supply the suction is connected to the part of the plurality of wind box 140 to the upper air sintering the balance 130. Second circulation unit 150 is disposed in the upper portion of the suction pipe 151, the sintered balance 130 connecting to the wind box 140 is formed in a space where air is received in the interior along the travel path the second hood 154, one end extending said connection to a suction pipe 151 and the other end is the second second connecting line coupled to the hood 154, 153, and the second connection line 153 2 comprises a blower 152, which is provided on. At this time, the intake air may be the air (hereinafter referred to as the intake air) passing through the sintered layer in the sintered balance 130.
[65]
Suction line 151 forms a space where air is received within, and is connected with a portion of the plurality of the windbox 140. For example, the suction pipe 151 may be connected with the windbox (140) disposed between the temperature of the suction from the one-half point of the moving path of air up to a point (the BTP) is. That is, it is possible to circulate the air sucked from the region. Each of the wind box 140, because it includes the measuring the temperature of the intake air sensor, to monitor the temperature of air to be drawn into the plurality of wind box 140 may determine the location of the BTP. This, BTP, but the position can vary depending on the sintering conditions, the operator can by controlling the sintering conditions adjustable with the position of a given BTP windbox 140.
[66]
2, the air flow is affected by the air flow resistance of the sintered layer, the air flow resistance is represented differently, depending on the sintering complete layer, for combustion, and the thickness of the micro-gyeolcheung. Air flow as air flow resistance increases, the large combustion units thickness is gradually reduced by a tendency to have decreased to a minimum in a middle region of 1/2 of the moving path and BTP increase again.
[67]
To the air flow resistance, the amount of air passing through the material by a wind box 140 is reduced in large part can be sintered is not smoothly proceed. Thus, 1/2 of the moving path (hereinafter referred to 1/2) and the second blower 152, the whole windbox be if the wind box 140 is disposed between the BTP connected to the suction pipe 151, described later ( 140) and since it provides only some of the suction force of the wind box, to one main blower 193 may be greater than suction force provided to provide a suction force to the whole windbox 140. That is, the suction force of each windbox connected wind connected to second blower 152, box 140 is the number of the partition less suction force to the second note of the blower 152 may increase.
[68]
Therefore, even if the air flow resistance is greater in the raceway between 1/2 and BTP, a second blower in size because, reducing the air volume in the 1/2 point and the sintering balance 130 between BTP suction force provided from the 152 that can be minimized. That is, the movement of the air can be, but can be disrupted, increasing the suction force for sucking air from the bottom to increase the air volume due to the reduced air flow resistance due to air flow resistance of the sintered material in the truck (130). Thus, proceeding smoothly the sintering of the raw material that is the raw material for sinter, it may be better productivity and quality of sintered ore.
[69]
On the other hand, when the wind box disposed between 1/2 and BTP are connected to a suction pipe 151, and the other windbox except the windbox between 1/2 and BTP are connected to the suction chamber 191. However, the area of ​​the wind box 140 is connected to a suction pipe 151 can be varied is not limited to this.
[70]
A second hood 154 serves to be placed on top of the sintered balance 130 is supplied to the air sucked into the suction pipe 151 for the source. The second hood 154 may be disposed at the rear than the windbox connected with the suction pipe 151 relative to the movement path. That is, the second hood is one of BRP (154) may be disposed between the top of the windbox arranged after (Burn Point Rising time of the combustion of the raw material ends) to the rearmost. The second hood 154 is provided along the longitudinal direction, can be gradually from top to bottom is formed to be wider in width.
[71]
For example, the length extending in the second hood 154 may be equal to or greater than the number of the suction pipes of the wind box 140 is connected to the (151) × 1 gae windbox 140 longitudinal length. Air sucked through the suction pipe 151 because it is a high temperature by absorbing the heat energy of the sintered layer, be larger in volume than the air outside of the normal temperature. Thus, the number of the windbox windbox 140 140 is that the cover, since the volume of air that can be limited by inhalation, the second hood 154, the area or the second hood 154 for supplying air not air is small when discharged from the second hood 154 is not sucked by both the wind box of the lower part is discharged to the outside may result in environmental pollution.
[72]
The increase in the length extending in the second hood 154 because the increase in the number of the windbox 140 is arranged at a lower side, and the second wind box 140 of the lower side of the air discharged from the hood 154 are sufficiently inhalation a second air discharged from the hood 154 can be prevented from being leaked to the outside. Accordingly, the length extending in the second hood 154 is to be formed in to cover the upper portion of the wind that is connected to the suction pipe 151, the box 140 can be more windbox 140 in size. That is, the length of the second hood 154 of the upper is formed should be a size that can cover a wind box 140 of the number that can be sufficiently suck the air discharged from the second hood (154). However, the length of which is disposed in the extended position and the second hood 154 may vary without being limited thereto. For example, the first region in which the windbox arrangement which is the other end of the second hood 154 is connected to the region with the suction pipe 151 is disposed may be some overlap. That is, the portion of the wind box which is arranged at a lower side of the intake wind box and the second hood 154 is connected to the pipe 151 have the same names.
[73]
On the other hand, the second hood 154 is capable of supplying air to the windbox arranged relative to the travel path to the rearmost after BRP. That is, FIG. 2, the air inlet in the windbox 140 between 1/2 and BTP may contain water because of its lower concentration of oxygen than that of the outside air, the combustion air takes place these sections When supplied as a raw material it can interfere with the burning. Thus, combustion is little or a material example of the movement path is completely rear end g, BRP windbox 140 is arranged from the top to the last room since the raw material can be supplied to the sucked air between 1/2 and BTP is. However, the area and shape in which the position and supply air of the second hood 154 may vary without being limited thereto.
[74]
The second connection line 153 is once connected to the suction pipe 151 and the other end is connected to the second hood 154. The In addition, the second connection line 153 is formed in the path of the air is taken in from the suction pipe 151 inside the mobile. Thus, the air is taken in from the suction pipe is a (151) supplied to the second hood 154 through the second connection line 153 may be discharged toward the lower portion of the raw material.
[75]
The second blower 152 provides the suction force to suction the second is provided in the connection line 153, the air in the wind box 140 is connected to the suction pipe 151. The second blower 152 is small, the number of the wind box 140 to provide a suction force than the main blower 193. Thus, the second blower 152, and the main blower main blower 193 which is 193, the be the same, the size of the suction force provided, the split more suction force of the wind box that receives the suction force from the second blower 152 may be receiving the suction force is greater than the wind box. Thus, the second blower 152 and the connected wind box 140 is low, the internal sintering the balance 130 of the upper air-permeable, the second blower 152 and the wind box is greater than the windbox connected with the main blower 193 is connected provide a large suction force and it is possible to increase the air volume inside the sintered balance 130 which is connected to the second blower (152).
[76]
That is, since air permeability is more suction to a large suction air from the lower part, the quality of the sintered ore produced by the increased air volume can be improved. However, the method of improving a suction force of the suction force and the size of the second blower 152 can be varied is not limited to this.
[77]
Thus, sikimeuro by circulating the air that is, the cooler gas generated while sintering times cool the seuna sintered ore that is, the cooler the exhaust gas generated during the sintering operation to the upper sintered balance 130 involved in sintering, not just discharged from the exhaust gas to prevent pollution can do. Further, this exhaust gas may be had, since a large heat energy while passing through the material, by supplying the exhaust gas to the raw material in the process of sintering the raw material improves the combustion efficiency. Thus, the amount of sintered ore can be used to produce a contrast material introduced can be increased to improve the productivity.
[78]
[79]
Figure 3 is a graph showing the sintering apparatus according to another embodiment of the present invention. In the following it will be described for the sintering apparatus according to another embodiment of the present invention.
[80]
When the sintered material in the balance 130 to be sintered, the top layer may be shorter because the heat energy ppaeatgigi by the outside air into contact with the outside, maintaining the high temperature conditions it is difficult to rise in temperature, even when increasing the temperature than the lower layer of time. Thus, since the upper material can proceed to the sintering reaction it is insufficient, the quality and productivity of raw material produced may be degraded. Thus, the sintering apparatus according to another embodiment of the present invention, in addition to the first circulation unit 180 according to an embodiment of the present invention further comprise a gaseous fuel supply unit 160, an upper sintered balance 130 for moving the sintering section as it can be supplied to the cooler gas and the fuel gas of the high temperature. In this case, the sintering apparatus according to another embodiment of the present invention may further comprise a second circulation unit 150 according to an embodiment of the invention.
[81]
3, the gas fuel supply 160 is connected to a first circulation unit 180, and supplies the gas fuel and serves to supply to the upper portion of the sintering balance 130 is then mixed with the cooler gas. A gaseous fuel supply unit 160, it is possible to form a path for the gaseous fuel movement therein and a fuel supply line 161, control valve 162 includes a coupled to the first connector (181) .
[82]
Fuel supply line (161) form a path for the gaseous fuel moves, one end in communication with the first connection pipe (181). Thus, the gas fuel to move in the fuel supply line 161 flows into the inside of the first connection pipe 181, and mixed to meet with cooler gas to move inside the first connector 181. Then, the mixed gas fuel and the cooler gas is supplied onto the first connection pipe 181 to move to the first hood sintered balance 130 through 183 accordingly.
[83]
Control valve 162 is provided in the fuel supply line 161 may control the movement of the gas fuel. Thus, when controlling the operation of the control valve 162 may adjust the amount and time of fuel gas is supplied to the gaseous fuel supplied to the sintering balance 130.
[84]
In this case, the natural gas to a gaseous fuel (LNG), petroleum gas (LPG), coke oven gas, at least one of:: (Blast Furnace Gas BFG), carbon monoxide (CO), hydrogen (H2) (COG Coke Oven Gas), blast furnace gas You can use one. This gaseous fuel is supplied to the sintered material in the truck 130 can control the combustion process of the material. That is, the time at which the combustion material by gas fuel supplied to the upper portion of the raw material can be increased. Therefore, it is possible due to increased burning time easily raise the temperature of the raw material, the raw material may increase the time to maintain a state of high temperature. However, it not limited to this can be used a variety of gaseous fuel with the combustible.
[85]
Further, the fuel gas is diluted to below the lower limit concentration of combustion may be supplied. That is, the gaseous fuel is burned after being fed onto the sintering balance 130 to haejueoya facilitate the sintering of the raw material. By the way, when the gas fuel is the first connection pipe 181. After the meet with cooler gas at a high temperature combusted in the feed to the sintering balance 130 it can not help the sintering of the raw material. Therefore, it is possible to dilute the fuel gas below the lower limit concentration of combustion in order to prevent the fuel gas is mixed with cooler gases before being fed onto the sintering balance 130 burned. Thus, after the gaseous fuel is supplied to the first connection pipe 181 even meet the high-temperature cooler gas in the sintering balance 130 without being burned is burned by the in-flame material may facilitate sintering of the raw material .
[86]
Yeonsoha the concentration of gaseous fuel can vary with temperature. That is, the concentration, the temperature rises more yeonsoha of gaseous fuel can be reduced, and the concentration increased as a yeonsoha decrease the temperature of the gaseous fuel. For example, in the case of using the LNG to a gaseous fuel, may be a yeonsoha a concentration of LNG is about 4.2% at 200 ° C, may be yeonsoha a concentration of LNG is about 3.6% in Celsius 400 degrees, Celsius 600 degrees yeonsoha in a concentration of the LNG it may be about 2.9%.
[87]
This because the yeonsoha a concentration of fuel gas in varying temperature conditions, according to the temperature conditions must be diluted to a concentration of yeonsoha gaseous fuel. Thus, to meet the fuel gas and in accordance with the temperature of the measured temperature of the gas cooler to a large impact, and the gas cooler to the temperature of the gaseous fuel necessary to adjust the concentration of yeonsoha a gaseous fuel. That is, it is easy to occur even if the combustion temperature of the gas cooler is high, little gas fuel supply, when the temperature of the cooler gas can take place during the day of combustion have a lot supplying gas fuel. Thus, the check yeonsoha a concentration of fuel gas that corresponds to the cooler gas temperature, and should be diluted to a concentration of yeonsoha fuel gas supplied to the raw material accordingly. At this time, the temperature of the cooler gas can be 100-300 ° C. However, the temperature of the cooler gas can be varied is not limited to this.
[88]
As such, because it supplies the gas cooler gas temperature of the fuel and the raw material, it is easy to perform combustion of the raw material from the upper to the lower portion, and the material can maintain a state of high temperature for a long time during which the sintering of the material proceeds. Thus, the improved quality of the raw materials is generated, the amount of which can be produced using a raw material compared to the input raw material can be increased to improve the productivity.
[89]
[90]
4 is a diagram showing the sintering apparatus according to an embodiment of the present invention. To the description it will be made to the gaseous fuel supply unit of the sintering apparatus according to the embodiment according to still another embodiment of the present invention.
[91]
4, the gas fuel supply section 160 in accordance with another embodiment of the invention, form a path for the gaseous fuel movement inside the fuel supply line having one end connected to the first hood 183 (161 ), and the fuel is provided at one end of the supply line 161 includes an injector 163 for injecting the gaseous fuel into the sintering balance top, may include a control valve 162.
[92]
A fuel supply line 161 may be connected directly to the first hood 183. For example, one end of a fuel supply line 161 may be connected through a first hood (183). Thus, the gaseous fuel supplied to the fuel supply line 161 is mixed with cooler gas is supplied through the first connection pipe (181) in the first hood 183 may be fed onto the sintering balance 130. In addition, it is provided with a control valve 162 to the fuel supply line 161 may control the movement of the gas fuel. Thus, when controlling the operation of the control valve 162 may adjust the amount and time of fuel gas is supplied to the gaseous fuel supplied to the sintering balance 130.
[93]
Injector 163 may be supported is connected to one end of the first hood 183 may be disposed within, the fuel feed passing through the first hood 183, line 161. For example, injector 163 may comprise a plurality of nozzles disposed along the movement route. Alternatively, it is also possible to include a body having a space where the gas is flowing into the injector 163, and is provided with a plurality of injection holes in the lower body portion jetting a gas raw material. That is, the injector 163 is formed of a shower head type can be injected gaseous fuel. Thus, there is a fuel gas go to the injector 163 along the fuel supply line 161 can be discharged onto a sintered balance 130 through the nozzle. However, the method for supplying gas fuel into a sintered structure and the balance 130 of the injector 163 can be varied is not limited to this.
[94]
Gas fuel can astute extend the burn time of the raw material, the cooler gas at a high temperature is able to provide thermal energy to the material. Thus, because the supply this gas cooler gas temperature of the fuel and the raw material, it is easy to perform combustion of the raw material from the upper to the lower portion, and the material can maintain a state of high temperature for a long time during which the sintering of the material proceeds. Thus, the improved quality of the raw materials is generated, the amount of which can be produced using a raw material compared to the input raw material can be increased to improve the productivity.
[95]
[96]
5 is a flow chart illustrating a sintering method according to an embodiment of the invention. In the following it will be described for the sintering process according to the embodiment of the present invention.
[97]
5, the process of the sintering method according to the embodiment of the present invention is a method for producing sintered ore, the process (S100) for loading the material inside the sintered truck moving along a movement path, igniting the starting material ( S200), the process of sucking the air in the lower direction of the raw material (S300), and discharging the sintered ores, the process of supplying a cooler gas to the sintered ore (S400), wherein at least a portion of the cooler gas supplied to the sintered ore It includes the step of supplying a material in the sintering balance. In this case, the process of supplying a cooler gas to the raw material, can be supplied to the gas cooler to the wind box arranged above the previous one-half point of the movement route. In addition, the movement path may be equal to the movement path described in the sintering apparatus 100.
[98]
First, a plurality of sintered balance 130 to the lower side of the loading unit 120 by sequentially passing through the raw material charged to each of a plurality of sintered truck 130 via the charging section 120 to form a raw material layer. When sequentially passes the lower the flame is ignited at the top of the raw material layer by the ignition (110), each sinter the balance 130 of the plurality of sintered Balance 130 110 to the ignition is the raw material through the sintering section sintered. That is, in the process of moving to the sintering zone sintering the balance 130, and the flame of the upper material layer moves to the lower portion by the suction force of the sintering section in the windbox 140, while the combustion of a raw material to produce a sintered ore. I.e. materials sintering is complete, the sintered ore is transported to the cooler 172 and then discharged from the sintering balance 130, it is cooled by a cooler gas which is supplied from the cooler 172.
[99]
At this time, it is possible to supply a part of the air sucked in the sintered material in the truck (130). In particular, it is possible to suck the air in the region between 1/2 points from the moving path of the sintering balance 130 windbox point where the temperature of the air drawn into the unit 140 is a maximum (BTP).
[100]
The 1/2 of the moving path and the middle area of ​​the BTP represents the air flow resistance within the material since the size tends to increase the air volume is decreased to the minimum again. To the air flow resistance, the amount of air passing through the material by a wind box 140 is reduced in large part can be sintered is not smoothly proceed. Therefore, connecting the wind box disposed between the movement path of 1/2 and BTP with the suction pipe 151 of the second circulation unit 150 and a second wind through the blower 152 is connected to the suction pipe 151, inhalation of air on the box, the greater suction force than can be provided to provide a suction force to the wind box to the total main blower 193.
[101]
Therefore, even if one-half the air flow resistance in the raceway between the points and BTP size, the second size since the suction force provided by the blower 152, and reduces the air volume in the 1/2 point and the sintering balance 130 between BTP that can be minimized. Thus, the quality of the sintered ores is smoothly the sintering of the raw material can be improved.
[102]
The through wind box 140 flows into the suction pipe 151, air is discharged toward the lower side of the raw material through the second hood 154 is placed on top of the sintered balance 130. A second hood 154 can supply the air to the wind box arranged after BRP to the rearmost relative to the movement path. The intake air in the windbox 140 is between 1/2 and BTP when the water-containing and, and supplying such air into the combustion zone the raw material is caused by a low concentration of oxygen than that of the outside air to interfere with the combustion can. Accordingly, it is to supplying combustion air to the rear of the moving path after the BRP is substantially or completely terminated. That is, since the BRP is because the combustion is finished, even if the water-containing sintered onto the balance (130) after the BRP and supply the low oxygen concentration atmosphere does not affect the sintering process.
[103]
At this time, the second lower side of the hood 154 are to be disposed and a second wind box (140) over the number enough to sufficiently intake the air discharged from the hood 154. The For example, the failure to have sufficient inhalation air of the wind box 2 in the lower side for discharging the hood 154, the intake air can not be leaked to the outside contamination of the environment. Therefore, the suction pipe 151 and is connected to the longitudinal length or the second hood 154, in consideration of the amount of air intake, the first necessary to adjust the number of the wind box 140 to second hood 154 is covered is.
[104]
On the other hand, by sintering cycle it is complete, the gas cooler cools the raw material and generated through the first circulation unit 180 can be re-used. In addition, by connecting the gas fuel supply section 160 in the first circulation unit 180, a mixture of cooler gas with the gaseous fuel it can be supplied to the sintering raw material on the inner balance 130. In particular, it can be supplied to the cooler gas and the gaseous fuel in the sintering upper balance 130 to move through the 1/2 point of the movement route since the point at which the ignition of the material conveyance path.
[105]
A combustion section in consideration is positioned on the upper layer of the sintering raw material. Therefore, when cooling the raw material to supply the hot gas cooler by absorbing heat energy into the top of the first material between the hood 183, the ignition 110 and the 1/2 intervals by the first circulation unit 180 , cooler gas may by passing through the raw material supply thermal energy to the material becomes more easily combustion of the raw material. Therefore, the combustion efficiency is improved can be the amount of the raw material to be made available over a greater productivity and input raw material production increase. In addition, it is possible to re-use a cooler that has absorbed the heat energy gas reduce energy use.
[106]
At this time, the measured temperature of the cooler gas and, when the temperature of the cooler gas temperature is equal to or greater than the preset first circulation unit 180 can be supplied to the cooler gas in the raw material. For example, the set temperature may be 100 degrees Celsius. That is, while if the temperature of the gas cooler is too low, the gas cooler passes through the material rather away the heat of the raw material may interfere with the burning of the material. Thus, it is enough that the cooler gas in the thermal energy store for example, can supply only 100 degrees Celsius or more gas cooler which can evaporate water in the raw material to the raw material in order to facilitate combustion of the raw material.
[107]
Thus, the first circulation unit 180, a cooler gas, and measuring the temperature of the cooler gas, and not less than the set temperature as compared with the temperature of the cooler Vegas temperature to control the operation of the first blower 182 to be drawn into the first supplied to the raw material through the hood 183, and the stop is less than the set temperature controls the operation of the first blower 182 to stop the cooler gas supplied to the first hood 183, and the cooler gas is supplied to the raw material can do. However, the set temperature value may be varied not only limited to this.
[108]
In addition, by connecting the gas fuel supply section 160 and the first circulation unit 180 can be supplied with the cooler gas and the gaseous fuel in the sintering balance 130. A gaseous fuel supply unit 160 is connected to the first hood 183 or a first connector 181 of the first circulation unit 180. Thus, when the gas fuel supply (160) supplying gas fuel, the gas fuel is supplied to the first hood 183 or a first connector 181, the first hood 183 or a first connector (181) It can be combined to meet with cooler gas that moves me. Then, the mixed gas and the cooler the gas fuel is supplied to the sintered material in the truck 130 can be smoothly the sintering of the raw material.
[109]
After the process of mixing the gaseous fuel and the gas cooler, the start of the cooler before the supply of the gas started, at the same time that the supply of the gas cooler start, or the supply of the gas cooler can be supplied to the gaseous fuel. That is, the first connection pipe 181 or the first through the hood 183, while the first supplies the gaseous fuel to the sintering balance 130 may offer a cooler gas, and may supply the gas fuel and the cooler gases at the same time, the cooler while supplying the first gas may be supplied to a gas fuel. However, the order in which the fuel gas and the cooler gas is supplied can be varied is not limited to this.
[110]
Gas fuel can give to extend the burn time of the raw material, the cooler gas at a high temperature is able to provide thermal energy to the material. That is, if the sintering balance 130, gas fuel is supplied to the upper surface of the raw material in gas yeonryogwa can be generated to meet the flame and combustion due to the raw material in the ignition unit 110. The Combustion of the gaseous fuel is also possible to easily increase the upper temperature of the material in contact it is possible to increase the temperature of the raw material, and the outside. Further, from top to bottom in the direction of the gas fuel supplied to the raw material is burned when supplied to the middle portion and the lower portion of the raw material is a raw material within a flame moves to the lower side can raise the efficiency of the combustion material. And, the high temperature during the process is cooler gas is supplied is supplied to the thermal energy to the material, it is possible to inhibit the combustion of the material to help the temperature is lowered.
[111]
Thus, because the supply this gas cooler gas temperature of the fuel and the raw material, it is easy to perform combustion of the raw material from the upper to the lower portion, and the material can maintain a state of high temperature for a long time during which the sintering of the material proceeds. Thus, the improved quality of the raw materials is generated, the amount of which can be produced using a raw material compared to the input raw material can be increased to improve the productivity.
[112]
[113]
Figure 6 is a view showing a test port according to an embodiment of the present invention, Figure 7 is a graph showing a temperature change within the sintered layer according to an embodiment of the invention.
[114]
To be described in more detail the present invention through experimental examples of the present invention.
[115]
When supplying a cooler gas to the upper part of the sintered layer using the port 500 as the cooler gas used to cool the sintered ore and, Figure 6 in order to confirm the effect of the case of supplying to the top of the sintered layer (Example case) and not to supply were compared (comparative example).
[116]
That is, in the Comparative Example was put into the raw material (1) to the ignition port (500) to determine the temperature change of the sintered layer. Embodiment to put the raw material (1) to the ignition port 500 and blow the hot air of about 250 degrees Celsius (the temperature of the gas cooler) to determine the temperature change of the sintered layer.
[117]
It will be described in detail with the comparative example the experimental conditions, was charged with raw materials (1) to 900mm in height to the port 500. The Charging density of the raw material (1) is 1888kg / m3, the negative pressure is 1700mmAq. And the ignition time is 90 seconds, the ignition temperature is about 1050 ° C FIG. In addition, the temperature of the raw material (1) was measured at A, B, C, D points to 255mm intervals in the lower layer order from the upper layer of the raw material (1).
[118]
Embodiment, the experimental conditions are more detail, was charged with starting material (1) by 900mm height to the port 500. The Charging density of the raw material (1) is 1888kg / m 3 , and the negative pressure is 1700mmAq. And the ignition time is 90 seconds, the ignition temperature is about 1050 ° C FIG. In addition, the high-temperature air (or high-temperature gas) to the upper layer of the raw material (1) was fed to 4-11 minutes. At this time, the temperature of air supplied is about 250 degrees Celsius (the temperature of the gas cooler), and the blowing amount of air is 322L / min (2,382Nm 3 is / min). In addition, the temperature of the raw material (1) was measured at A, B, C, D points to 255mm intervals in the lower layer order from the upper layer of the raw material (1).
[119]
7, was a case of supplying hot air to the upper portion of the raw material, the high-temperature zone ranges from embodiment A point higher than the high-temperature region in the range of comparative example, it can be seen that the maximum temperature is also increased.
[120]
Further, the embodiment was increased in the sintering rate of the raw material thereafter gileotjiman, B point than the sintering rate of the comparative material (or the sintering time) from the point A for example. This injection of the hot air, so may be due to reduced air flow resistance by increasing the sintered layer is single Wet removal rate. Or, it is to improve air permeability in the sintering quality of the raw material upper layer may have been reduced to the sintering speed of the suction flow rate increase effect. Further, an embodiment if the range of the high-temperature zone was increased than that of the comparative example in both the A ~ D point. Thus, the embodiment was finally shorten the time to reach the BTP than the comparative example, the raw materials were more efficient combustion. Thus, the quality of sintered ore can be improved in the upper part to the lower part.
[121]
In addition, the exhaust gas temperature in Examples were higher than the flue-gas temperature in the comparative example. When the exhaust gas temperature is reduced to less than 130 ° C may be corrosive to the pipe for condensed water is sucked to the exhaust gas. Therefore, it is easy to maintain the temperature are increased in the case of the exhaust gas temperature above 130 degrees Celsius in an embodiment, to be maintained above 130 ° C, for example of the exhaust gas. Thus, it is possible to prevent the suction pipe for the ship corrosion.
[122]
On the other hand, the comparative example and the embodiment BTP BTP arrival time and temperature and the sintering rate are given in Table 1 below.
[123]
TABLE 1
Comparative Example Example
BTP arrival time 35 minutes 27 seconds 34 minutes 31 seconds
BTP temperature 457.5 degree Celsius 480.1 degree Celsius
Sintering rate 25.4mm / min 26.1mb / min

[124]
[125]
Thus, it can be seen that referring to Figure 7 and Table 1, when the supply of the hot gas cooler cooling the precipitated sintered ore to the upper portion of the sintering layer is sintered at a faster rate at higher temperatures proceeding. Therefore, when supplying a cooler gas at a high temperature to the upper portion of the raw material it can be seen that to get the quality and energy-saving effects of the sintered ore. Further, owing to the self-removal of the dust in the gas cooler in the sintering process, it is possible to prevent environmental pollution caused by dust.
[126]
[127]
Thus, the invention has been shown and described with reference to certain preferred embodiments thereof, it is possible that various modifications, within the limits that do not depart from the scope of the invention. Therefore, the scope of the invention limited to the described embodiments should not jeonghaejyeoseo is, not only should the claims be given on the bottom defined by the claims and their equivalents.
Claims

[Claim 1]
Is arranged to be movable along the movement route, a plurality of sintering the balance being the raw material is charged therein; the ignition to be disposed over the sintered balance, spray flame to the upper surface of the material; wherein the below the sintering balance along the movement route and a plurality are arranged, sucking the air to the lower direction of the sintering balance windbox for sintering the raw material; is arranged on a side of the moving path, supplying a cooler gas to a sintered ore discharged from the sintering balance cooler; And sintering apparatus including a first circular section which is connected to the cooler, at least a portion fed to the upper portion of the balance of the sintering raw material supplied to the gas cooler.
[Claim 2]
The method according to claim 1, wherein the sintering apparatus including the connection unit 1 is circulated, the fuel gas supply for supplying gas fuel to said first circular portion.
[Claim 3]
The method according to claim 1, wherein the first rotation unit, the sintered first hood balance is arranged on the upper portion extending along said travel path, one end connected to the said cooler and the other end is connected to the first coupled to the first hood line and a sintering apparatus comprising a first blower is provided in the first connecting line.
[Claim 4]
According to claim 1 or 2, is connected to the portion of the wind box, comprising a second circulation unit for supplying the intake air to the windbox of the portion to the upper portion of the sintering balance, the movement route, the source material is charging period in which charged into the sintering balance, lighting period in which the ignition of the raw material in the ignition, and a sintering zone in which the raw material is sintered, the first rotation part and the second rotation unit, the suction with the sintering zone the air or sintering device for supplying a cooler gas.
[Claim 5]
The method according to claim 4, wherein the second circular portion, a suction pipe for connecting the portion of the windbox and forming a space in which the air therein; A second hood disposed over the sintered balance and extending along said travel path; One end connected to the suction pipe and the other end of the second connection connected to the second hood line; And sintering device comprises a second blower provided in the second connecting line.
[Claim 6]
The method according to claim 5, the first hood which is provided on the first circulation unit is disposed between the second hood and to the ignition, the first hood, wind box disposed before 1/2 of the travel path the sintering apparatus located in an upper portion.
[Claim 7]
The method according to claim 5, the sintering apparatus that is arranged in one end, between the top of the windbox from a point after which the combustion of the starting end is disposed to the rearmost relative to the movement path of the second hood.
[Claim 8]
The method according to claim 5, the length is greater than the length of the sintering machine can be × 1 of the windbox of the windbox connected with the suction pipe and extending in the second hood.
[Claim 9]
The method according to claim 5, wherein the suction pipe, the sintering equipment the temperature of the intake air from the 1/2 point of the movement path is connected with the wind box disposed between the point where the maximum.
[Claim 10]
The method according to claim 2, wherein the movement path, the raw material is charged region is charged into the sintering balance, lighting period in which the raw material is ignited, and a sintering zone in which the raw material is sintered, said first circular portion and the base fuel supply unit sintering apparatus for feeding the cooler gas and the gaseous fuel in the sintering section.
[Claim 11]
The method according to claim 10, wherein the gaseous fuel supply unit, which comprises a connecting supply lines to form a path for the gaseous fuel movement therein, said connecting supply line, connected to the first connecting lines provided on the first circulation unit sintering device.
[Claim 12]
The method according to claim 10, wherein the gaseous fuel supply unit, forming a path for the gaseous fuel movement inside and one end of a fuel supply connected to the first hood, said first circulation line portion; And it is provided at one end of the fuel supply line sintering apparatus including an injector for injecting the gaseous fuel into the sintering balance top.
[Claim 13]
The method according to claim 10, wherein the gaseous fuel is supplied to the sintering apparatus is diluted to below the lower limit concentration of combustion.
[Claim 14]
A method for producing sintered ore, comprising: charging the raw material inside the sintered truck moving along a path of translation; the process of igniting the material; the process of sucking the air in the lower direction of the raw material; and discharging the sintered ores, the process for supplying a cooler gas to a sintered ore; the process comprising the step of supplying at least a portion of the cooler gas supplied to the sintered ore in the raw materials in the sintering balance, and supplies the cooler gas in the raw material, one of the travel path / 2 point before sintering method for supplying the gas cooler to the upper wind box disposed.
[Claim 15]
The method according to claim 14, comprising the steps of: feeding the cooler gas in the raw material in the sintering balance is, the process, and temperature of the cooler gas to measure the temperature of the cooler gas is above a set temperature to supply the cooler gas to the raw material sintering comprises the process.
[Claim 16]
After the method according to claim 14, fed by the gas cooler to the raw material in the sintering balance, the sintering method comprising the step of supplying a mixture of fuel gas to the gas cooler.
[Claim 17]
The method according to claim 14 or claim 16, and then sucks the air to the lower direction of the raw materials, the sintering method comprising the step of supplying a portion of the intake air in the raw materials in the sintering balance.
[Claim 18]
The method according to claim 17, comprising the steps of: supplying a part of the air sucked to the raw material in the sintering balance is sucking the air in the region between the point where the temperature of the air sucked from the 1/2 point of the movement route is the maximum sintering method.
[Claim 19]
The method according to claim 16, comprising the steps of mixing the gaseous fuel is, before the supply of the cooler gas starts, and at the same time that the supply of the cooler gas starts, or sintering method for supplying gas fuel after started the supply of the cooler gas .
[Claim 20]
The method according to claim 16, comprising the steps of supplying a mixture of fuel gas in the gas cooler is a gas cooler and the gas fuel after the point at which the raw material is ignited by sintering the balance top to move through the 1/2 point of the movement route sintering method of supplying.
drawing

[Figure 1]

[Figure 2]

[Figure 3]

[Figure 4]

[5]

[6]

[7]