KR20060006493A - An apparatus for manufacturing compacted irons of reduced materials comprising fine direct reduced irons and an apparatus for manufacturing molten irons using the same - Google Patents

Abstract

The present invention relates to an apparatus for producing compacted iron containing reduced iron, and an apparatus for manufacturing molten iron using the same. To this end, the compacted material manufacturing apparatus of the present invention, a compacted iron-containing reducing body discharged from the charging hopper to produce a compacted compact and are spaced apart from each other to form a gap, and the gap is provided on both sides of the gap It includes a pair of teak plates to prevent leakage of the reducing iron-containing reducing body introduced into the overlapping with the guide tube in the axial direction of the roll. Through the present invention as described above, a compacted material having good quality can be produced.

Cheek plate, groove, sealing member, compacted material manufacturing apparatus, molten iron manufacturing apparatus

Description

Device for producing compacted iron containing reduced-ring iron, and apparatus for manufacturing molten iron using the same

1 is a schematic perspective view of a compacted article manufacturing apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic cross-sectional view taken along line AA of FIG. 1.

3 is a schematic perspective view of a teak plate according to an embodiment of the present invention.

4 is a view schematically showing a molten iron manufacturing apparatus including a compacted material manufacturing apparatus according to an embodiment of the present invention.

The present invention relates to a compacted material manufacturing apparatus and a molten iron manufacturing apparatus using the same, and more particularly, compacted material manufacturing apparatus for producing compacted material by compressing a reduced body containing direct reduced iron (DRI) and molten iron using the same It relates to a molten iron manufacturing apparatus for manufacturing a.                         

The steel industry is a key industry that supplies basic materials to the entire industry, such as automobiles, shipbuilding, home appliances, construction, etc., and is one of the oldest industries with the development of mankind. Steel mills, which play a pivotal role in the steel industry, use molten iron and coal as raw materials to produce molten pig iron, which is then manufactured and supplied to each customer.

Currently, about 60% of the world's iron production comes from the blast furnace method developed since the 14th century. The blast furnace method is a method of manufacturing molten iron by reducing iron ore to iron by putting together coke prepared from sintering process and coke made from bituminous coal into a blast furnace. The blast furnace method, which is a large scale of the molten iron production equipment, requires a raw material having a certain level or more of strength and a particle size capable of ensuring the breathability in the furnace due to its reaction characteristics. As described above, the blast furnace method is a carbon source used as a fuel and a reducing agent. Relies on coke processing specific raw coal, and iron sources mainly rely on sintered ore through a series of bulking processes. As a result, the current blast furnace method necessarily involves preliminary processing of raw materials such as coke manufacturing facilities and sintering facilities. Therefore, it is not only necessary to construct auxiliary facilities other than blast furnaces, but also Due to the need for the installation of environmental pollution prevention equipment, there is a problem in that the manufacturing cost is rapidly increased due to the large investment cost.

In order to solve the problems of the blast furnace method, molten reduction of molten iron is produced by directly using general coal as a fuel and a reducing agent in steel mills around the world, and by directly using spectroscopy that occupies 80% or more of the world's ore production as an iron source. Much effort has been put into developing the steelmaking method.

U.S. Patent No. 5,534,046 discloses an apparatus for manufacturing molten iron using direct coal and spectroscopy. The apparatus for manufacturing molten iron disclosed in U.S. Patent No. 5,534,046 consists of a three-stage flow reduction reactor in which a bubble fluidized bed is formed and a melt gasification furnace connected thereto. The spectroscopy and subsidiary materials at room temperature are charged to the first flow reduction reactor, followed by three flow reduction reactors in sequence. Since the high temperature reducing gas is supplied from the melt gasifier to the three-stage flow reduction furnace, the spectroscopic and secondary raw materials at room temperature are heated in contact with the high temperature reducing gas. At the same time, the spectroscopy and secondary raw materials at room temperature are reduced by 90% or more, fired by 30% or more, and charged into the melt gasifier.

Coal is supplied into the melt gasifier to form a coal filling layer, and spectroscopy and subsidiary materials at room temperature are melted and slaked in the coal filling layer and discharged into molten iron and slag. Oxygen is blown through a plurality of air vents installed on the outer wall by melting gasification, is converted into a high temperature reducing gas while combusting the coal packed bed, and is sent to a fluid reduction reactor to reduce spectroscopy and secondary raw materials at room temperature, and then are discharged to the outside.

However, in the above-described molten iron manufacturing apparatus, since a high-speed gas stream is formed on the upper part of the molten gasifier, there is a problem in that the branched iron and the calcined auxiliary material charged into the molten gasifier are scattered. In addition, when charging reduced iron and calcined feedstock into the molten gasifier, there is a problem that it is difficult to ensure the air permeability and liquidity of the coal filling layer in the molten gasifier.

In order to solve this problem, a method of briquetting reduced-reduced iron and secondary raw materials and charging them in a molten gasifier has been studied. In this regard, U. S. Patent No. 5,666, 638 discloses a method and apparatus for producing elliptical sponge iron briquettes. Further, US Pat. Nos. 4,093,455, 4,076,520, and 4,033,559 disclose methods and apparatus for producing plate- or corrugated irregular sponge iron briquettes. Here, the reduced-reduced iron is hot-hardened and cooled to be suitable for long-distance transportation to produce spongy iron briquettes.

In the case of such a general briquette manufacturing apparatus, in order to prevent the branched iron from scattering to the outside during the production of the briquettes, the cheek plates are installed on both sides of the roll to prevent the branched iron from scattering. Since the briquette manufacturing apparatus is relatively small here, even the use of a conventional teak plate can sufficiently prevent scattering of the branched iron.

However, in the case of a large briquette manufacturing apparatus, even if a cheek plate is installed, a reduced iron-containing reducing material flows in a large amount into the roll, causing a problem that a large amount of reduced iron is scattered to the outside. In particular, since a large amount of high temperature reduced iron-containing reducing agent flows into the upper part of the roll, the amount of reduced iron-containing reducing agent which is stagnant on the upper part of the roll increases, so that the reduced-reduced iron is scattered in a gap between the upper part of the compacted material manufacturing apparatus and the cheek plate. have.

The present invention has been made to solve the above-described problems, and an object thereof is to provide a compacted article manufacturing apparatus suitable for mass production of compacted sheets.

Moreover, an object of this invention is to provide the molten iron manufacturing apparatus which can manufacture molten iron of high quality using the compacted material of good quality.

In order to achieve the above object, the compacted material manufacturing apparatus of the present invention comprises a pair of rolls that compress compacted iron-containing reducing bodies discharged from a charging hopper to produce compacted materials and are spaced apart from each other to form a gap. And a pair of cheek plates installed on both sides of the gap to prevent leakage of the reducing iron-containing reducing agent flowing into the gap and overlapping the guide tube in the axial direction of the roll.

And the compacted material manufacturing apparatus of the present invention may further include a feeding box for delivering the reduced iron-containing reducing body to a pair of rolls.

It is preferable to form a groove in close contact with the supply box at the top of the cheek plate.

The cheek plate includes a sealing member for sealing the reducing iron-containing reducing body, which may be attached to the groove along the groove.

Here, the sealing member is preferably one side is attached to the groove so as to be inclined on the groove.

It is preferable that the inclined surface of the sealing member faces the outside of the gap.

In the compacted body manufacturing apparatus of this invention, a supply box can be supported by a sealing member.

The sealing member is preferably formed of a heat resistant steel sheet.

In addition, the groove may include a first groove formed along the arrangement direction of the pair of rolls, and a second groove formed along the axial direction of the pair of rolls, connected to both ends of the first groove.                     

The length of the guide tube is preferably longer as it gets farther from the center of the gap.

In addition, an end portion and a periphery of the guide tube corresponding to the longest length of the guide tube may overlap one surface of the cheek plate.

In addition, an inclined recess is formed on one surface of the cheek plate opposite to the pair of rolls, and the recess may overlap the guide tube.

In the center of the recess of the cheek plate, a stepped portion can be formed along the arrangement direction of the roll.

And the stepped portion may be formed in the guide tube.

Here, the stepped portion of the cheek plate and the stepped portion of the guide tube may face each other.

And the compacted-body manufacturing apparatus of this invention further includes the support which fixedly supports the cheek plate in the opposite side of a gap across the cheek plate, It is preferable that an inner space is formed in the surface which a support contacts a cheek plate.

In addition, the compacted body manufacturing apparatus of the present invention may further include a screw feeder (screw feeder) is installed in the charging hopper to discharge the reduced iron-containing reducing material flowing into the charging hopper into the gap.

The molten iron manufacturing apparatus of the present invention includes a compacted body manufacturing apparatus having the above-described structure, a crusher for crushing the compacted body discharged from the compacted body manufacturing apparatus, and a melt gasifier for charging and melting the compacted material crushed in the crusher.                     

In addition, at least one coal selected from lump coal and coal briquettes may be supplied to the melting gasifier.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 4. These embodiments of the present invention are merely for illustrating the present invention and the present invention is not limited thereto.

1 is a schematic perspective view of a compacted article manufacturing apparatus according to an embodiment of the present invention, which includes a charged hopper 10 and a pair of rolls 20 (including a gear attached to an end). The manufacturing apparatus 100 is shown schematically. The structure of the compacted body manufacturing apparatus shown in FIG. 1 is only for illustration of this invention, Comprising: This invention is not limited to this. Therefore, the form of the compacted body manufacturing apparatus can be modified into various other structures.

Through the opening 16 located in the center of the charging hopper 10 shown in FIG. 1, the reducing body containing a ring reducing iron is charged in the direction shown by arrow A '. The reduced iron-containing reducing body is prepared from iron ore, and further includes a calcined feedstock and is reduced and manufactured through a multistage flow reduction furnace. You may charge into the charging hopper 10 the reduced-ring iron containing reducing body manufactured by other methods. An exhaust hole 14 is formed in an upper portion of the charging hopper 10 to remove the gas generated from the high-temperature reducing iron-containing reducing substance flowing into the charging hopper 10. Inside the charging hopper 10, a scraper 124 (shown in FIG. 2) is installed in the screw feeder 12 to remove the branched iron attached to the inner wall of the charging hopper 10.                     

The charging hopper 10 includes a guide tube 70 extending downward, and the guide tube 70 is fitted into a feeding box 30 located below, and the supply box 30 The lower part of) is in close contact with the cheek plate 80 (shown in FIG. 2, hereinafter same) overlapping with the guide tube 70 in the axial direction of the roll 20 in the Y-axis direction.

In the charging hopper 10, a screw feeder 12 is provided for discharging the reduced-iron-containing reducing substance flowing into the charging hopper 10 into a gap between the pair of rolls 20. The gap here refers to the space between the rolls which exist along the longitudinal direction of a pair of rolls. The screw feeder 12 has a screw 122 (shown in FIG. 2) formed at a lower end thereof, and the reduced feed iron-containing reducing agent collected at the lower side by gravity is rotated downward by the rotation of a motor (not shown) attached to the upper side. Discharge.

The pair of rolls 20 located in the roll casing 24 are spaced apart from each other to form a gap to compress and compact the reduced iron-containing reducing body discharged by the screw feeder 12 from the charging hopper 10. Prepare a sieve. The roll cover 26 is attached to the outside of the roll 20.

Cheek plates are installed on both sides of the gap between the rolls, and serve to prevent leakage of the reducing iron-containing reducing body flowing into the gap. The cheek plate is supported by the support 88 which is supported by the cheek plate pressing device, and the upper portion of the support 88 protrudes above the supply box 30. The cheek plate may be assembled through the upper opening of the supply box.

 Hereinafter, the internal structure of the compacted material manufacturing apparatus according to an embodiment of the present invention, in particular the teak plate will be described in more detail with reference to FIG. 2.

FIG. 2 is a schematic cross-sectional view taken along the AA line of FIG. 1 in a Z-axis direction, and an enlarged cross-sectional view and a part of the cheek plate 80 supporting both sides of the roll 20.

The reduced iron-containing reducing body is introduced into the feed box 30 by the screw feeder 12 through the guide tube 70. The supply box 30 is installed in the lower portion of the charging hopper 10 to transfer the reduced iron-containing reducing body to the pair of rolls 20, and forms a convex lower space facing the charging hopper 10. As a result, the stagnation layer of the reduced-iron-containing reducing body introduced in a large amount can be secured, and it can be appropriately supplied to the gap center of the pair of rolls 20.

In addition, the length of the guide tube 70 is gradually longer as it moves away from the center of the gap, so that the reducing iron-containing reducing agent is more efficiently distributed in the inner space of the supply box 30 which is formed convexly toward the upper side, and the roll Make the compacted material at the center smoothly. An end 701 of the guide tube 70 corresponding to the longest length of the guide tube 70 and its periphery overlap one surface of the cheek plate 80. Accordingly, the reduced reducing iron-containing reducing body discharged from the guide tube 70 is smoothly introduced between the rolls 20 without being scattered to the outside.

Since a large amount of reducing iron-containing reducing bodies flows into the lower portion of the supply box 30, the reducing iron is likely to scatter to the outside. In particular, in order to prevent the scattering of the branched iron, the sealing of the part where the supply box 30 and the cheek plate 80 are in close contact is important. Therefore, as shown in the enlarged circle of FIG. 2, in the present invention, the grooves 82 closely contacting the supply boxes 30 are formed on the pair of cheek plates 80 to seal the supply box 30 with a sealing member ( 84) to prevent scattered iron from scattering to the outside. Since the sealing member 86 is in an inclined form, even if the ring reducing iron is scattered, the sealing member 86 is trapped in the lower part of the sealing member 86 and cannot be scattered to the outside. Accordingly, it is possible to prevent stable scattering of the reduced iron containing reducing iron introduced into the supply box 30, thereby achieving stable operation.

In particular, as shown in the enlarged circle of FIG. 2, a step 703 is formed in the guide tube 70, and the step is formed along the arrangement direction of the roll 20 in the center of the recess 86 of the cheek plate 80. The part 861 is formed. The stepped portion 703 of the guide tube 70 and the stepped portion 861 of the cheek plate 80 are opposed to each other to prevent scattered iron from scattering between the overlapping guide tube 70 and the cheek plate 80. . That is, by forming obstacles formed as step portions that face each other in the flow path formed between the guide tube 70 and the cheek plate 80 to prevent the branched iron from scattering to the outside.

On the other hand, the compacted material manufacturing apparatus according to an embodiment of the present invention further includes a support 88 for fixing and supporting the cheek plate 80 on the opposite side of the gap between the roll with the cheek plate 80 therebetween. An inner space 89 is formed on the surface where the support 88 is in contact with the cheek plate 80 to minimize the area where the support 88 is in contact with the cheek plate 80 to make the heat distribution constant, thereby torsion by heat deformation. prevent.

Hereinafter, the internal structure of the teak plate according to an embodiment of the present invention will be described in more detail with reference to FIG. 3.

3 is a schematic perspective view of the teak plate 80 according to an embodiment of the present invention, in which the groove 82 of the top of the teak plate 80 is shown in more detail.

Although not shown in FIG. 3, a pair of rolls are positioned in the X-axis direction between the pair of cheek plates 80 located in the Y-axis direction, and the cheek plate 80 has the reduced ring iron scattered to the outside of the roll. To prevent them.

A support 88 is installed outside the cheek plate 80 to press the cheek plate 80 to the roll side. Although not shown in FIG. 3, the support plate 88 may be supported using a bar plate cheek plate pressing device. Openings 87 for assembling bolts are formed outside the support 88. The opening 87 is processed into a long hole shape to absorb the amount of expansion and contraction during thermal expansion of the teak plate 80.

The cheek plate 80 is provided with a groove 82 in close contact with the supply box 30 (shown in FIG. 2, hereinafter same), and attaches a sealing member 84 along the groove 82. The sealing member 84 may be attached by welding or the like, or may be attached by other methods.

In the enlarged circle of FIG. 3, the groove 82 formed on the top of the cheek plate 80 is enlarged, and the groove 82 is formed in the first groove 822 formed along the arrangement direction of the pair of rolls (not shown). And a second groove 824 connected to both ends of the first groove 822 and arranged along the axial direction of the pair of rolls (not shown). As such, the first groove 822 and the second groove 824 are formed to surround the roll, and the supply box is brought into close contact with the roll, so that the reducing iron can be prevented from scattering to the outside.

The sealing member 84 is inclined on the groove 82, and one side 841 is attached to the groove 82. Attachment can be implemented by welding or the like, and other various methods are also possible. In particular, it is preferable to point outward the gap of the inclined surface of the sealing member 84. As a result, the sealing member 84 supports the supply box that is in close contact with the cheek plate 80, so that the ring-reducing iron, which escapes to the outside, can be guided to the lower side of the inclined surface of the sealing member 84, and thus scattered to the outside. The amount of reduced iron is reduced.

In this way, the sealing member 84 is not only located on the contact surface of the cheek plate 80 and the supply box, but also serves to prevent the branched iron from scattering to the outside, so that the material is made of a heat-resistant steel sheet to withstand high temperatures. It is desirable to. Stainless steel may be used as the heat resistant steel sheet, and STS310S is a representative example.

On one surface of the cheek plate 80 opposite to the pair of rolls, a stepped portion is formed along the arrangement direction of the rolls and an inclined recess 86 is formed to overlap with the guide tube 70 (shown in FIG. 2). . Accordingly, it is possible to prevent scattering of the reducing iron-containing reducing body flowing from the guide tube, thereby enabling stable operation.

Due to the cheek plate of the compacted material manufacturing apparatus having such a structure, it is possible to minimize the scattering of the reduced ring iron to the outside, thereby preventing manufacturing cost increase due to the loss of the reduced ring iron, and producing the compacted material stably. There is an advantage to that.

Hereinafter, a molten iron manufacturing apparatus using the compacted apparatus according to an embodiment of the present invention will be described in detail.

4 is a view schematically showing a molten iron manufacturing apparatus using a compacted material manufacturing apparatus according to an embodiment of the present invention, it shows a molten iron manufacturing apparatus for manufacturing molten iron by charging the compacted material into a melt gasifier.

The molten iron manufacturing apparatus 200 shown in FIG. 4 is a compacted material manufacturing apparatus 100 of the present invention, a crusher 40 for crushing the compacted material discharged from the compacted material manufacturing apparatus, and the compacted material crushed by the crusher 40 It includes a melt gasifier (60) to charge and melt. In addition, it may further include a reservoir 50 for temporarily storing the compacted material crushed by the crusher 40. The structure of the crusher 40 and the melt gasifier 60 will be easily understood by those skilled in the art to which the present invention pertains, and thus the detailed description thereof will be omitted.

The melt gasifier 60 is supplied with at least one coal selected from coal and coal briquettes. In general, the coal briquettes may be an example of coal having a particle size of more than 8 mm taken from the production site, and the coal briquettes may be coal formed by pressing by crushing coal having a particle size of 8 mm or less taken from the production site.

This kind of coal is charged into the melt gasifier 60 and oxygen (O ₂ ) is supplied to melt the compacted material and then discharge it to the hot water outlet. In this way, molten iron of good quality can be easily produced.

Since the compacted body manufacturing apparatus of this invention includes a pair of cheek plate which overlaps with a guide tube in the axial direction of a roll, it effectively prevents the branched iron which flowed in into the outside.                     

And since the compacted-body manufacturing apparatus of this invention contains the supply box which delivers a reduced iron containing reducing body to a pair of rolls, a reduced iron containing reducing body can be charged to the gap center of a roll.

In addition, by forming a groove in close contact with the supply box on the top of the teak plate to prevent the branched iron to be scattered to the outside.

In addition, since the sealing member included in the cheek plate is attached to the groove along the groove, the sealing member can be more tightly sealed between the cheek plate and the supply box, thereby preventing scattering of the reduced ring iron.

Here, since one side of the sealing member is attached to the groove so as to be inclined on the groove, it is possible to easily collect the ring-reducing iron which is about to escape through the gap between the cheek plate and the supply box.

In addition, since the inclined surface of the sealing member faces the outer side of the gap, it is possible to trap the ring-reducing iron which is intended to escape to the outside under the inclined surface.

Since the supply box is supported by the sealing member, the supply box can be seated on the cheek plate to prevent the reduced iron from scattering to the outside.

The sealing member is formed of a heat resistant steel sheet and can withstand high heat generation due to the inflow of the reducing iron-containing reducing body.

And the groove formed on the cheek plate includes a first groove formed along the arrangement direction of the pair of rolls, and a second groove formed along both ends of the first groove along the axial direction of the pair of rolls. By enclosing the gap of, it is possible to effectively prevent the scattered iron from scattering to the outside.

In addition, the length of the guide tube is gradually longer as it moves away from the center of the gap, so that the reducing iron-containing reducing agent introduced through the guide tube is introduced into the gap without being scattered to the outside.

The cheek plate is assembled by overlapping the end of the guide tube corresponding to the longest length of the guide tube and its periphery, thereby preventing the reducing iron-containing reducing agent flowing through the guide tube from scattering to the outside.

Since an inclined recess is formed on one surface of the cheek plate opposite to the pair of rolls and overlaps the guide tube, the assembly of the guide tube is easy.

Further, since the stepped portion is formed in the center of the recessed portion of the cheek plate along the arrangement direction of the roll, there is an advantage in that the recessed portion is easy to process.

Since the stepped portion is formed in the guide tube, the inclined guide tube can be easily formed.

In addition, since the stepped portion of the cheek plate and the stepped portion of the guide tube face each other, the stepped portion is positioned in the middle of the flow path where the reduced-iron can be scattered to the outside, thereby preventing scattering of the reduced-iron.

And since the inner space is formed on the surface in contact with the cheek plate of the support for supporting the cheek plate, the heat distribution can be maintained under a constant to prevent the twist due to thermal deformation of the cheek plate.

In addition, the compacted material manufacturing apparatus of the present invention further includes a screw feeder which is installed inside the charging hopper and discharges the reduced reducing iron-containing reducing agent introduced into the charging hopper into a gap, thereby efficiently reducing the reducing iron-containing reducing body between the rolls. Can enter the gap.

Since the molten iron manufacturing apparatus of the present invention includes the compacted material manufacturing apparatus, the crusher, and the melt gasification furnace as described above, molten iron of good quality can be produced.

In addition, since at least one coal selected from the coal and coal briquettes is supplied to the melting gasifier, the finely divided coal collected at the production site can be used directly, thereby reducing production costs and having no environmental pollution.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the spirit and scope of the claims set out below.

Claims (19)

A charged hopper containing a reduced reducing iron-containing reducing body, the guide tube extending downwards, A pair of rolls are formed by compressing the reduced reducing iron-containing reducing body discharged from the charging hopper, and forming a gap, spaced apart from each other, and A pair of cheek plates installed on both sides of the gap to prevent leakage of the reducing iron-containing reducing body flowing into the gap and overlapping the guide tube in the axial direction of the roll; Compacted material manufacturing apparatus comprising a. In claim 1, Apparatus for producing a compacted body further comprising a feeding box for delivering the reduced iron-containing reducing body to the pair of rolls. In claim 2, The compacted material manufacturing apparatus which formed the groove which contact | connects the said supply box in the upper part of the said cheek plate. In claim 1, The cheek plate includes a sealing member for sealing the reduced iron-containing reducing body, wherein the sealing member is attached to the groove along the groove. In claim 4, The sealing member is a compacted material manufacturing apparatus attached to one side of the groove so that the inclined on the groove. In claim 5, The inclined surface of the said sealing member is a compacted material manufacturing apparatus which faces the outer side of the said gap. In claim 5, And a supply box for transferring the reduced iron-containing reducing body to the pair of rolls, and supporting the supply box with the sealing member. In claim 5, The sealing member is a compacted material manufacturing apparatus formed of a heat resistant steel sheet. In claim 1, The groove includes a first groove formed along the arrangement direction of the pair of rolls, and a second groove formed in the axial direction of the pair of rolls connected to both ends of the first groove. In claim 1, The length of the guide tube is a device for manufacturing compacted material is gradually longer as the distance from the center of the gap. In claim 10, And an end portion and a peripheral portion of the guide tube corresponding to the longest length of the guide tube overlap one surface of the cheek plate. In claim 10, An inclined portion is formed on one surface of the cheek plate facing the pair of rolls, and the concave portion overlaps the guide tube. In claim 12, The compacted body manufacturing apparatus in which the step part was formed in the center of the recessed part of the said cheek plate along the arrangement direction of the said roll. In claim 13, A compacted material manufacturing apparatus having a stepped portion formed in the guide tube. The method of claim 14, And a stepped portion of the cheek plate and a stepped portion of the guide tube face each other. In claim 1, And a support for fixing and supporting the cheek plate at an opposite side of the gap with the cheek plate interposed therebetween, wherein the interior space is formed on a surface in contact with the cheek plate of the support. In claim 1, And a screw feeder installed in the charging hopper and discharging the reduced iron-containing reducing agent flowing into the charging hopper into the gap. Apparatus for producing compacted material according to claim 1, Crusher for crushing the compacted material discharged from the compacted material manufacturing apparatus, And Melting gas furnace to charge and melt the compacted material crushed in the crusher Iron manufacturing apparatus comprising a. The method of claim 18, A molten iron manufacturing apparatus for supplying at least one coal selected from lump coal and coal briquettes into the melting gasifier.

Images