KR20170091212A - Gas supply device and apparatus for manufacturing sintered ore with the same - Google Patents

Gas supply device and apparatus for manufacturing sintered ore with the same Download PDF

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Publication number
KR20170091212A
KR20170091212A KR1020160011529A KR20160011529A KR20170091212A KR 20170091212 A KR20170091212 A KR 20170091212A KR 1020160011529 A KR1020160011529 A KR 1020160011529A KR 20160011529 A KR20160011529 A KR 20160011529A KR 20170091212 A KR20170091212 A KR 20170091212A
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South Korea
Prior art keywords
sintered
hood
raw material
circulation pipe
gas
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KR1020160011529A
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Korean (ko)
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KR101779551B1 (en
Inventor
김용인
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주식회사 포스코
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Publication of KR20170091212A publication Critical patent/KR20170091212A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
    • F27B21/06—Endless-strand sintering machines
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C22B1/22—Sintering; Agglomerating in other sintering apparatus
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/26—Cooling of roasted, sintered, or agglomerated ores
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/02—Supplying steam, vapour, gases, or liquids

Abstract

The present invention relates to a gas supply apparatus and a raw material disposal apparatus having the same, and more particularly, to an apparatus for producing sintered ores by moving a plurality of sintered bogies loaded with a raw material layer therein along a moving path, And a cooling gas generated in the process of cooling the sintered ores; A hood for covering the sintered bogie at least at an upper portion of the movement path and connected to the circulation pipe to supply the gas to the raw material layer in the sintered bogie; At least a part of which is disposed in parallel with the circulation pipe in the circulation pipe to divide at least a part of the inner space of the circulation pipe; and a plurality of auxiliary parts provided in the hood and connected to the plurality of distribution pipes And a dispensing means including a hood, and it is possible to suppress the heat quantity unbalance that occurs in the width direction of the sintered bogie during the sintering operation.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a gas supply device and an apparatus for manufacturing the same,

More particularly, the present invention relates to a gas supply device capable of uniformly supplying a gas to a raw material layer in a sintered bogie, and to an apparatus for manufacturing sintered ores having the same.

Dewight-Lyoid sintering process, which is capable of mass production, is mainly used for the sintered ore manufacturing process, which is manufactured to a size suitable for use in a furnace by sintering minute iron ores. In this sintering process, the iron ore, additives and fuels (minute coke, anthracite) are put into a drum mixer and mixed and humidified (raw material weight ratio is about 7 ~ 8%) to make the sintering raw material into pseudo-particles, Charge at a constant height. Then, after the surface is ignited by the ignition furnace, firing of the sintering material is proceeded while forced air is sucked from below, and sintered ores are produced. The sintered ores that have been sintered are crushed through a crusher of the light pipe, cooled in a cooler, and classified into granules having a size of 5 to 50 mm which is easy to be charged and reacted in the blast furnace and transferred to the blast furnace.

The upper light stored in the upper light hopper and the sintered raw material stored in the surge hopper are transported in the sintering vehicle and transported while the moving sintering vehicle is passing through the lower portion by ignition. At this time, the flame (i.e., flame) injected from the ignition furnace is ignited on the surface of the sintered raw material accommodated in the sintered bogie, that is, the surface layer. The bogie that has passed through the ignition furnace is transported by the transfer device in the process advancing direction, and the sintered bogie passes through the upper side of the plurality of windboxes arranged in the process direction. A suction force is generated in the downward direction on the sintered bogie passing through the upper side of the wind box and the flame ignited by the sucked outside air is moved in the downward direction. When the sintered lorry arrives at the wind box located at the end of the process, the flame reaches the bottom of the sintered lorry and the sintering is completed, and the above operation is continuously performed on the plurality of sintered lorries.

However, when the sintered ores are produced by using such a facility, there is a difference in the distribution of heat along the width direction of the sintered bogie. That is, the hood covering the upper opening of the sintering bogie is provided on the upper part of the sintering bogie. The hood is formed in a shape that the area becomes wider from the upper part to the lower part, so that a relatively small amount of gas It is inevitable that it will be supplied.

Therefore, the gas is not uniformly supplied to the raw material layer in the sintered bogie so that the heat quantity becomes insufficient at the edge side than the center portion in the width direction of the sintered bogie.

JP1995-159048A JP1996-73954A

The present invention provides a gas supply device capable of uniformly supplying gas to a raw material layer and an apparatus for producing sintered ores having the same.

The present invention provides a gas supply device capable of improving operational productivity and an apparatus for producing sintered ores having the same.

A gas supply device according to an embodiment of the present invention is provided in an upper portion of a raw material layer to supply gas to the raw material layer, and includes: a pipe used as a gas moving path; A hood which is connected to a lower portion of the pipe and has a cross-sectional area larger than a cross-sectional area of the pipe, and covers the raw material layer; At least a part of which is disposed in parallel with the piping in the piping to divide at least a part of the internal space of the piping and a plurality of auxiliary hoods provided in the hood and connected to the plurality of distribution pipes respectively And a distributing means for distributing the data.

The plurality of distribution pipes divide the entire inner space of the piping, and the plurality of auxiliary hoods may be arranged to correspond to the cross-sectional area of the hood.

The plurality of distribution pipes may be provided in a part of the piping, and the auxiliary hood may be arranged in an edge area of the hood.

The plurality of auxiliary hoods may be formed with through-holes through which the gas moves.

An apparatus for producing sintered ores according to an embodiment of the present invention is an apparatus for producing sintered ores by moving a plurality of sintered bogies loaded in a raw material layer along a moving path, A circulation pipe for transferring at least one of cooling gas generated in the process of cooling the sintered ores; A hood for covering the sintered bogie at least at an upper portion of the movement path and connected to the circulation pipe to supply the gas to the raw material layer in the sintered bogie; At least a part of which is disposed in parallel with the circulation pipe in the circulation pipe to divide at least a part of the inner space of the circulation pipe; and a plurality of auxiliary parts provided in the hood and connected to the plurality of distribution pipes And a dispensing means including a hood.

And a fuel supply pipe communicating with the circulation pipe and supplying a fuel gas or an oxygen-containing gas.

The plurality of distribution pipes divide the entire inner space of the circulation pipe, and the plurality of auxiliary hoods may be arranged to correspond to the cross-sectional area of the hood.

The plurality of auxiliary hoods may be formed with through-holes through which the gas moves.

The plurality of distribution pipes may be provided in a part of the circulation pipe, and the auxiliary hood may be disposed in an edge area in a width direction of the sintered bogie.

The auxiliary hood may be disposed in the edge region in the width direction of the sintered bogie so as to occupy 10 to 30% of the length in the width direction of the sintered bogie.

The gas supply device and the sintered light production device having the gas supply device according to the embodiments of the present invention can suppress the heat quantity unbalance occurring in the width direction of the sintered bogie during the sintering operation. That is, in the process of circulating the exhaust gas generated in the process of manufacturing the sintered ores to the raw material layer in the sintering vehicle, the exhaust gas is supplied to the raw material layer uniformly and uniformly distributed throughout the raw material layer, It is possible to suppress the heat quantity unbalance in the raw material layer which is generated due to the imbalance of the suction amount in the region. Therefore, it is possible to improve the quality such as the reducing property and the strength of the sintered ores, as well as to improve the productivity of the sintered ores.

1 is a schematic view of a sintering apparatus according to an embodiment of the present invention.
2 is a schematic view of a sintering apparatus according to a modification of the present invention.
3 is a view showing a gas supply device according to an embodiment of the present invention.
4 is a view showing a gas supply device according to a modification of the present invention;

Hereinafter, embodiments of the present invention will be described in detail. It will be apparent to those skilled in the art that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know.

The present invention relates to a device for processing a raw material by supplying gas to a raw material layer accommodated in a container, and more particularly, to a gas supply device capable of processing a raw material while uniformly supplying gas over the entire raw material layer, . Hereinafter, an apparatus for charging a sintering blend material into a sintering vehicle and producing an sintered orbital while uniformly supplying gas to a raw material layer formed in the sintering bogie will be described. Here, the sintered bogie corresponds to the container, and the sintered blended material charged into the sintered bogie corresponds to the raw material layer.

FIG. 1 is a schematic view of a sintering apparatus according to an embodiment of the present invention. FIG. 2 is a schematic view of a sintering apparatus according to a modification of the present invention. FIG. 4 is a view showing a gas supply apparatus according to a modification of the present invention. FIG.

Referring to FIG. 1, the apparatus 100 for producing sintered ores is provided with a plurality of sintering bogie 130, which is provided to be movable along a moving path, and a sintering bogie 130, An ignition furnace 110 provided in front of the raw material supply unit 120 with respect to the moving direction of the sintered bogie 130 to ignite a surface layer portion of the raw material layer in the sintered bogie 130, And a plurality of windboxes 140 disposed along the movement path of the sintering bogie 130 and sucking the inside of the sintering bogie 130. The sintered ores production apparatus 100 may include a crusher 171 provided on the other side of the movement path for crushing the sintered ores discharged from the sintered bogie 130 and a cooling device 172 for cooling the crushed sintered ores. The apparatus for producing sintered ores 100 may further include circulation units 150 and 180 for circulating at least a part of various flue gases generated in the process of producing the sintered ores and the sintered ores in the sintered bogie 130 have.

Here, the movement path forms a closed loop so that the sintered bogie 130 rotates in an endless track manner, and the upper side of the movement path includes a sintered section in which raw materials charged into the sintered bogie 130, And the lower side of the movement path is a turning interval for moving the blank sintered bogie 130 to the sintering section for sintering after light distribution of the sintered light is complete. At this time, before the sintering section, a charging section in which the raw material is charged and an ignition section may be provided. Therefore, the region where the raw material supply unit 120 is disposed is the charging region, and the region where the ignition furnace 110 is provided can be the ignition region. The wind box 140 is provided at a lower portion of the sintering section and can suck the inside of the sintered bogie 130 moving along the sintering section. The sintered light that has been sintered in the sintering bogie 130 is shined at a portion where the sintering bogie 130 is switched from the sintering section to the turning section, that is, the other side of the movement path, and this region is referred to as a light distribution section. ). ≪ / RTI >

The raw material supply unit 120 includes an upper optical hopper (not shown) for storing the upper light, a surge hopper (not shown) and a charging device (not shown) for storing the sintering compound raw material, and the upper optical hopper and the surge hopper The upper light and the sintering compound material are stored in the sintering bogie 130 to form a raw material layer.

The upper light hopper is provided at an upper side movement path of the sintering bogie 130, that is, at one side of the upper side of the sintering section. The upper light hopper 130 is provided with upper light for preventing the sintering material, . The upper light means that sintered ores having a particle size of about 8 to 15 mm are selected from among the sintered ores.

The surge hopper is provided in front of the upper light hopper, i.e., in front of the movement path of the sintering bogie 130, to store the sintering raw material for producing the sintered ores.

The charging device uniformly loads the sintering blend material in the width direction of the sintering bogie 130 without segregation and segregation so that the particle size gradually decreases from the bottom to the top in the depth direction of the sintering bogie 130.

The ignition furnace 110 is provided in front of the surge hopper so that the sintering blend material is charged into the sintering bogie 130 to supply a flame to the surface layer of the raw material layer to be ignited.

The wind box 140 is provided at a lower side of the upper side movement path of the sintered bogie 130, that is, below the sintering section, and sucks the inside of the sintered bogie 130 moving along the upper side movement path. More specifically, the wind box 140 may be provided between the ignition furnace 110 and the light-guiding portion. The end of the wind box 140 is connected to the exhaust unit 190, and the exhaust gas sucked through the wind box 140 can be discharged to the outside. The exhaust portion 190 may include a duct 191, a blower 193, a dust collector 192, and a chimney 194. The end of the wind box 140 is connected to the duct 191 and the blower 193 is installed at the end of the duct 191 to generate a negative pressure inside the wind box 140 to thereby suck the inside of the sintered bogie 130 . The duct 191 is provided with a dust collector 192 in front of the blower 193 so that impurities in the exhaust gas drawn through the wind box 140 can be filtered and discharged through the chimney 194. The windbox 140 sucks the outside air to ignite the surface layer of the raw material for sintering and burn the raw material for sintering, thereby producing the sintered ores.

The crusher 171 is provided around the light-shading portion to crush the sintered ore discharged from the sintering bogie 130 and charge it into the cooling device 172.

The cooling device 172 cools the hot sintered light using external air.

The circulation part may include a flue gas circulation part 150 for circulating the flue gas generated in the process of producing the sintered ores and a cooling gas circulation part 180 for circulating the cooling gas generated in the process of cooling the sintered light. The circulating part circulates the exhaust gas and the cooling gas to the sintering path so that it can be used as a gas necessary for producing the sintered ores.

Each of the circulation units 150 and 180 includes circulation pipes 153 and 181 for transferring a part of the flue gas generated in the process of manufacturing the sintered ores and the cooling gas generated in the process of cooling the sintered ores to the sintering path, And hoods 154 and 183 which are connected to the sintering carts 153 and 181 and supply exhaust gas to the sintering cart 130 moving along the sintering path. At this time, the circulation pipes 153 and 181 may be provided with blowers 152 and 182 for guiding the exhaust gas to the hoods 154 and 183.

In this case, the flue gas generated in the process of producing the sintered ores may be flue gas generated in various regions of the sintering path, but the flue gas may flow from the half of the sintering route through the raw material layer in the sintering bogie 130 It may be an exhaust gas generated at a point where the temperature becomes maximum (BTP). Most of the exhaust gas generated in the process of producing the sintered ores is collected in the duct 191 and discharged to the stack 194 through the dust collector 193. [ At this time, the exhaust gas circulation unit 160 is generated at a point BTP where the temperature of the exhaust gas circulated through the sintering path, that is, the gas passing through the raw material layer in the sintering bogie 130 from the half point of the sintering path, The exhaust gas can be circulated through the sintering path.

The exhaust gas circulation unit 160 is provided at a point BTP at which the temperature of the gas passing through the raw material layer in the sintered bogie 130 reaches a maximum from a half of the sintering path, A first circulation pipe 153 used as a transfer path of the exhaust gas collected in the circulation duct 151 and a second circulation pipe 153 used as a transfer path of the exhaust gas collected in the circulation duct 151. The first circulation pipe 153, The first hood 154 and the first circulation pipe 153 supply the exhaust gas to the raw material layer in the sintering bogie 130. The blower 152 guides the exhaust gas to the first hood 154 .

The first hood 154 may be disposed in front of a point BTP at which the temperature of the gas passing through the raw material layer in the sintered bogie 130 reaches the maximum with respect to the moving direction of the sintering bogie 130. [ For example, the first hood 154 may be provided in a cooling region where the sintered light sintered in the sintering path is cooled. One side of the first circulation pipe 153 may be connected to the circulating duct 151 and the other side may be connected to the first hood 154. The exhaust gas generated in the process of manufacturing the sintered ores may be supplied to the raw material layer in the sintered bogie 130 through the first circulation pipe 153 and the first hood 154. The exhaust gas generated in the process of producing the sintered ores has a lower oxygen concentration than the air and has a slight amount of water. Therefore, when such an exhaust gas is supplied to the raw material layer in the sintering bogie 130, the air volume can be increased while suppressing the reoxidation of the sintered ores, thereby improving the quality of the sintered ores. That is, as the sintering of the sintering compound material progresses, the air resistance in the raw material layer increases, so that suction through the wind box 140 can not be achieved sufficiently. Accordingly, the exhaust gas which does not greatly affect the sintering of the sintering raw material is circulated to increase the air flow volume, thereby sintering the sintering raw material smoothly.

The cooling gas circulation unit 180 circulates the cooling gas supplied through the second circulation pipe 181 and the second circulation pipe 181 used as the transfer path of the cooling gas generated in the cooling device 172 to the sintering bogie And a blower 182 provided in the second circulation pipe 181 and guiding the cooling gas to the second hood 183. The second hood 183 may be provided in the second circulation pipe 181,

First, the second hood 183 may be provided in front of the ignition furnace 110 in the moving direction of the sintered bogie. More specifically, the second hood 183 may be provided 1/2 point before the sintering zone from the front of the ignition furnace 110. One side of the second circulation pipe 181 may be connected to the cooling device 172 and the other side may be connected to the second hood 183. The cooling gas generated in the process of cooling the sintered ores through the second circulation pipe 181 may be supplied to the raw material layer in the sintered bogie 130 through the second hood 183. The cooling gas generated during the cooling process of the sintered ores is generated in the process of cooling the sintered ores that have been completely sintered using the external air and has a higher oxygen concentration than the exhaust gas generated in the process of producing the sintered ores. For example, the cooling gas may have an oxygen concentration similar to air. Therefore, when the cooling gas is supplied to the raw material layer in the sintered bogie 130 in which ignition is performed, the effect of increasing the amount of air and the effect of being used as fuel gas in sintering can be obtained.

On the other hand, the second circulation pipe 181 may be connected to a fuel supply pipe 190 for supplying a fuel gas or an oxygen-containing gas as shown in FIG. In this case, the fuel gas or the oxygen-containing gas may be mixed with the cooling gas supplied to the second circulation pipe 181 to supply the raw material layer in the sintered bogie 130 through the second hood 183. The fuel gas or the oxygen-containing gas promotes the combustion of the ignition-ignited raw material layer, thereby making it possible to smoothly sinter the raw material layer.

If the exhaust gas and the cooling gas supplied to the raw material layer in the sintered bogie 130 through the circulation units 150 and 180 are uniformly supplied to the raw material layer in the sintered bogie 130, the quality and productivity of the sintered ores are improved You can give. However, the first hood 154 and the second hood 183 are arranged in the width direction and the longitudinal direction of the sintered bogie 130 in such a manner that the exhaust gas and the cooling gas supplied from the first circulation pipe 153 and the second circulation pipe 181 The sintering bogie 130 is formed in such a shape that its width increases toward the bottom so as to uniformly inject the exhaust gas and the exhaust gas to be supplied to the center of the sintering bogie 130, There is a problem that less amount of gas is supplied.

Accordingly, in order to solve such a problem, the present invention has a distributing means 160 capable of uniformly distributing the exhaust gas and the cooling gas, so that the exhaust gas and the cooling gas are uniformly supplied to the raw material layer in the sintering vehicle 130. That is, before the exhaust gas or the cooling gas is supplied to the raw material layer of the sintering bogie 130, the exhaust gas or the cooling gas is uniformly distributed and uniformly supplied to the entire region of the raw material layer of the sintering bogie 130, The raw material layer can be uniformly sintered.

The first circulation pipe 153 for supplying the exhaust gas and the distributing means 160a for the first hood 154 may be provided and the second circulation pipe 181 and the second hood 183 for supplying the cooling gas may be provided The distributing means 160a provided in the first circulation pipe 153 and the first hood 154 will be described below.

The distributing means 160a may include a distribution pipe 161a and an auxiliary hood 162a.

The distribution pipe 161a can divide at least a part of the inner space of the first circulation pipe 153 along the moving direction of the exhaust gas. At this time, at least a portion of the distribution pipe 161a may be provided in the first circulation pipe 153, and the rest may be provided in the first hood 154. [

At least a portion of the distribution pipe 161a may be provided at the end where the exhaust gas is discharged from the first circulation pipe 153 to the first hood 154. [ The distribution pipe 161a may be arranged in parallel with the first circulation pipe 153 in the first circulation pipe 153, which is provided inside the first circulation pipe 153.

As shown in FIG. 3, a plurality of the distribution pipes 161a can divide the entire inner space of the first circulation pipe 153. In this case, the plurality of distribution pipes 161a may have the same inner diameter or different inner diameters. The inner diameter of the distribution pipe 161a disposed in the vicinity of the inner circumferential surface of the first circulation pipe 153 having a relatively low density of the exhaust gas transported along the first circulation pipe 153 is larger than the inner diameter of the central portion of the first circulation pipe 153 Which is larger than the inner diameter of the distribution pipe 161a. The exhaust gas can be uniformly supplied to the plurality of auxiliary hoods 162a connected to the distribution pipe 161a. Although the distribution pipe 161a is shown as having a rectangular cross-sectional shape in the drawing, the cross-sectional shape of the distribution pipe 161a may be formed in various shapes such as a circular shape, an elliptical shape, and a polygonal shape. For example, when the distribution pipe 161a is formed into a cylindrical shape having a circular cross-sectional shape, a space may be formed between the distribution pipes 161a. In this case, the auxiliary hood 162a and the auxiliary hood 162a are spaced apart from each other so that the exhaust gas flowing between the auxiliary distribution hoods 162a can flow between the auxiliary hoods 162a, And the exhaust gas may be supplied to the sintered layer of the sintered bogie 130. [

The auxiliary hood 162a connected to the distribution pipe 161a may be arranged to supply the flue gas in the same direction as the first hood 154 in the first hood 154. [ The plurality of auxiliary hoods 162a may be arranged in a matrix shape so as to correspond to the area of the first hood 154, that is, the area where the exhaust gas is injected, in the first hood 154. [ The plurality of auxiliary hoods 162a may be arranged to be at least equal to the widthwise length of the sintering bogie 130 or be disposed outside the widthwise length of the sintering bogie 130. [

The auxiliary hood 162a may be formed to have a cross sectional area smaller than the cross sectional area of the first hood 154 with respect to the direction crossing the direction in which the exhaust gas moves. The auxiliary hood 162a divides the inner space of the first hood 154 inside the first hood 154 and supplies the exhaust gas supplied from the distribution pipe 161a to the raw material layer of the sintered bogie 130. [

With this arrangement, the distributing means 160a can uniformly supply the exhaust gas generated in the process of manufacturing the sintered ores to the raw material layer of the sintering bogie 130. [

The exhaust gas supplied to the raw material layer of the sintered bogie 130 through the first hood 154 is discharged to the both ends of the first hood 154, There is a problem that a relatively small amount of exhaust gas is supplied to both sides of the sintering bogie 130 in the width direction compared to the center portion of the sintering bogie 130. 4, the distributing pipe 161a is provided so as to divide at least a part of the inner space of the first circulation pipe 153, and the auxiliary hood 162a is provided at both edges of the sintered bogie 130 in the width direction The air volume of the exhaust gas supplied to both edge regions in the width direction of the sintered bogie 130 can be increased.

Before the flue gas transferred along the first circulation pipe 153 is dispersed in the first hood 154, a part of the flue gas is separated from the first circulation pipe 153 through the distribution pipe 161a, 162a to the raw material layer in the sintered bogie 130, it is possible to prevent the air volume of the exhaust gas supplied in the width direction of the sintered bogie 130 from being reduced.

At this time, the auxiliary hood 162a may be formed to occupy about 10 to 30% of the width W of the sintered bogie 130 in the width direction. When the auxiliary hood 162a is larger than the range shown in the drawing, the air volume is reduced in the edge area of the interior of the auxiliary hood 162a, so that a sufficient amount of exhaust gas is difficult to be supplied to both edges in the width direction of the sintered car 130, The amount of the exhaust gas supplied to the auxiliary hood 162a is small and it is difficult to supply a sufficient amount of exhaust gas to both edges of the sintered bogie 130 in the width direction. Therefore, it is preferable to form the auxiliary hood 162a in an appropriate size within the range shown.

4 shows that the distribution pipe 161a is disposed near the inner circumferential surface of the first circulation pipe 153. However, the distribution pipe 161a may be disposed in any part of the inner space of the first circulation pipe 153. [

Although the present invention has been described in detail with reference to the specific embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited by the described embodiments, but should be defined by the appended claims, as well as the appended claims.

100: a sintered-crystal manufacturing apparatus 110:
120: raw material supply part 130: sintered lorry
140: Wind box 150: Flue gas circulation part
160: dispensing means 171: crusher
172: cooling device 180: cooling gas circulation part
190:

Claims (10)

An apparatus for supplying a gas to a raw material layer provided on a raw material layer,
A pipe used as a path of gas transfer;
A hood which is connected to a lower portion of the pipe and has a cross-sectional area larger than a cross-sectional area of the pipe, and covers the raw material layer;
At least a part of which is disposed in parallel with the piping in the piping to divide at least a part of the internal space of the piping and a plurality of auxiliary hoods provided in the hood and connected to the plurality of distribution pipes respectively ;
. The method according to claim 1,
Wherein the plurality of distribution pipes divide the entire inner space of the piping, and the plurality of auxiliary hoods are arranged to correspond to the cross-sectional area of the hood. The method of claim 2,
Wherein the plurality of distribution pipes are provided in a part of the piping, and the auxiliary hood is arranged in an edge area of the hood. The method of claim 3,
Wherein the plurality of auxiliary hoods are formed with through-holes through which the gas moves. An apparatus for producing sintered ores by moving a plurality of sintered bogies loaded with a raw material layer along a moving path,
A circulation pipe for transferring at least one of a flue gas generated in the process of manufacturing the sintered ores and a cooling gas generated in a process of cooling the sintered ores;
A hood for covering the sintered bogie at least at an upper portion of the movement path and connected to the circulation pipe to supply the gas to the raw material layer in the sintered bogie;
At least a part of which is disposed in parallel with the circulation pipe in the circulation pipe to divide at least a part of the inner space of the circulation pipe; and a plurality of auxiliary parts provided in the hood and connected to the plurality of distribution pipes A dispensing means including a hood;
And a sintered body. The method of claim 5,
And a fuel supply pipe communicating with the circulation pipe and supplying a fuel gas or an oxygen-containing gas. The method of claim 6,
Wherein the plurality of distribution pipes divide the entire inner space of the circulation pipe and the plurality of auxiliary hoods are arranged to correspond to the cross-sectional area of the hood. The method of claim 7,
Wherein the plurality of auxiliary hoods are provided with through-holes through which the gas moves. The method of claim 6,
Wherein the plurality of distribution pipes are provided in a part of the circulation pipe and the auxiliary hood is disposed in an edge region in the width direction of the sintered bogie. The method of claim 9,
Wherein the auxiliary hood is disposed in the edge region in the width direction of the sintered bogie so as to occupy 10 to 30% of the length in the width direction of the sintered bogie.
KR1020160011529A 2016-01-29 2016-01-29 Gas supply device and apparatus for manufacturing sintered ore with the same KR101779551B1 (en)

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Cited By (2)

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CN107198961A (en) * 2017-06-13 2017-09-26 武汉钢铁有限公司 Sinter flue dust sub-prime residual heat recovery and denitration coupling process
CN108168324A (en) * 2018-01-09 2018-06-15 中钢集团工程设计研究院有限公司 A kind of sintering flue gas cycle stream cover and sintering system

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KR101461580B1 (en) * 2013-12-23 2014-11-17 주식회사 포스코 Apparatus for manufacturing sintered ore and method for manufacturing sintered ore using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107198961A (en) * 2017-06-13 2017-09-26 武汉钢铁有限公司 Sinter flue dust sub-prime residual heat recovery and denitration coupling process
CN107198961B (en) * 2017-06-13 2020-06-02 武汉钢铁有限公司 Sintering smoke quality-based waste heat recycling and denitration coupling process
CN108168324A (en) * 2018-01-09 2018-06-15 中钢集团工程设计研究院有限公司 A kind of sintering flue gas cycle stream cover and sintering system
CN108168324B (en) * 2018-01-09 2024-01-30 中钢集团工程设计研究院有限公司 Sintering flue gas circulation flow equalizing cover and sintering system

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