UA82789C2 - Device for producing of compacted cast-iron from the grinded cast-iron obtained by direct reducing of iron, and device for producing of cast-iron melt from compacted cast-iron - Google Patents

Abstract

The present invention relates to an apparatus for manufacturing compacted irons and an apparatus for manufacturing molten irons using the same. The apparatus for manufacturing compacted irons according to the present invention includes a charging hopper into which reduced materials containing fine reduced irons are charged; a couple of rolls separated from each other to form a gap between the rolls; and a couple of cheek plates installed on the sides of the couple of rolls. The charging hopper includes guide tubes extending downward. The couple of rolls compact the reduced materials containing fine reduced irons discharged from the charging hopper and manufacture compacted irons. The couple of cheek plates prevent leakage of the reduced materials containing fine reduce irons charged into the gap and are overlapped with the guide tubes in the axis direction of the rolls.

Description

The invention relates to a device for the production of compacted cast iron and a device for the production of cast iron melt from compacted cast iron, in particular, a device for the production of compacted cast iron by compaction of reduced materials containing small cast iron and produced by direct reduction of iron, and the production of compacted cast iron and a device for the production of cast iron melt from compacted cast iron cast iron

Ferrous metallurgy is a basic industry that supplies the basic materials needed for the design and production of cars, ships, household items, etc. This industry has been developing since the earliest times of mankind. Metallurgical plants, which play a crucial role in ferrous metallurgy, produce steel from molten iron and supply it to consumers after obtaining this molten metal (ie, molten iron) from iron ores and coal as raw materials.

Currently, approximately 6,095 percent of the world's iron production is produced using blast furnaces, a method developed as far back as the 14th century. According to this method, coke made using iron ore and bituminous coal, after passing through the sintering process, is fed into a blast furnace and oxygen is fed into the furnace to reduce the iron ore to iron, producing molten iron. The use of blast furnaces, which is practiced in most iron smelting plants, requires that the raw materials have at least a predetermined hardness and granule size that ensures proper ventilation in the furnace, taking into account the reaction characteristics. Therefore, coke obtained in the process of processing special raw coal is necessary as a source of carbon, which is used as a fuel and reducing agent. In addition, you need to have a source of iron, which is sintered iron ore obtained by sintering. Therefore, the modern blast furnace process requires equipment for preliminary processing of raw materials, for example, coking equipment and sintering equipment. In addition, it is necessary to have auxiliary equipment for the blast furnace and equipment to minimize environmental pollution.

Significant investments to provide such equipment increase the cost of production.

To solve these problems, considerable research has been carried out to develop a reduction smelting process that allows the production of molten iron using raw coal as fuel and reducing agent and iron ore as the source of iron.

US patent 5,534,046 describes a plant for the production of molten iron with the direct use of raw coal and fine iron ore. The device for obtaining such a melt includes three-stage reactors with a fluidized bed, which create a stationary boiling fluidized bed in them, and a melting gas generator attached to them. Small iron ore and additives at room temperature are loaded into the first fluidized bed reactor and passed through this three-stage fluidized bed reactor. As the hot reducing gas produced in the smelter gas generator is fed to this three-stage fluidized bed reactor, contact with this gas raises the temperature of the iron ore and additives. At the same time, 9095 or more iron ore and additives are recovered, and 30956 or more are sintered and loaded into the smelter gas generator.

A compacted coal layer in the melting gas generator is formed due to loading of coal.

Therefore, the iron ore and additives are melted and slaged in this compacted coal seam and then discharged as molten iron and slag. Oxygen supplied from nozzles mounted on the outer wall of the smelter gas generator combusts the compacted coal bed to produce hot reducing gas, which is then fed into the fluidized bed reactor to recover the iron ore and additives and vented to the outside.

However, since a rapid flow of gas is generated in the upper part of the melting gas generator, which is part of the said device for making molten iron, there is a problem that the fine reduced iron and sintered additives loaded into the melting gas generator are washed out and loosened. In addition, when the fine reduced ore and sintered additives are loaded into the smelter gas generator, there is a problem that the penetration of gas and liquid into the compacted coal bed of the smelter gas generator is not guaranteed.

To solve these problems, the method of briquetting fine reduced iron and additives and loading them into the melting gas generator was used. In this regard, US patent 5,666,638 describes a method of manufacturing oval briquettes from porous ore and a device for implementing this method. In patents

US 4,093,455, 4,076,520 and 4,033,559 describe a method of manufacturing lamellar or corrugated briquettes from porous ore and a device for implementing this method. Here, fine reclaimed iron is subjected to hot briquetting and then cooled, thus producing porous iron briquettes suitable for long-distance transport.

In the briquette making apparatus described above, side plates are installed on both sides of the rollers to prevent the washing of fine reclaimed iron to the outside during the making of briquettes. Since the briquette maker is small in size, the use of normal side plates can sufficiently prevent the loss of fine reclaimed iron.

However, in the case of a large briquetting unit, even the use of side plates does not prevent fine reclaimed iron from being washed out when large amounts of reclaimed material are loaded onto the rollers. In particular, since hot reduced materials containing reduced iron can be on the upper side of the rollers, when loading a large amount of reduced materials onto the rollers, the amount of these materials retained on the upper side of the rollers increases significantly and, as a result, a large amount of fine reduced iron leaches out through the gap between the top of the briquette maker and the side plates.

The task of the invention is to solve the mentioned problems and to create a device for the production of compacted cast iron, capable of producing such cast iron in large quantities.

In addition, the invention includes a device for the production of molten iron obtained from a device for the production of compacted iron.

The device for the production of compacted iron according to the invention includes a loading hopper into which recovered materials containing fine recovered iron are loaded; a pair of rollers separated from each other with the formation of a gap between them; and a pair of side plates mounted on either side of this pair of rollers.

The loading hopper has guide pipes directed downwards. A pair of rollers compacts the reclaimed materials containing fine reclaimed iron loaded from the loading hopper to produce compacted pig iron. A pair of side plates deflects the flow of reclaimed materials containing fine reclaimed iron into the gap and overlaps with the guide tubes in the direction of the roller axes.

The device for making compacted iron according to the invention may also have a self-stacking magazine for feeding reclaimed materials containing fine reclaimed iron to a pair of rollers.

It is desirable that the upper part of the side boards have grooves close to the self-stacking store.

Preferably, the side plates have sealing elements installed in grooves along them to retain reclaimed materials containing fine reclaimed iron.

The side of the sealing element may be attached to the grooves, and the sealing element may have an inclination relative to the grooves.

It is desirable that the inclined surface of the sealing element is directed towards the outer side of the gap.

The device for making compacted iron according to the invention may also have a self-stacking magazine for feeding reclaimed materials containing fine reclaimed iron to a pair of rollers, in which case the compacting member may support the self-stacking store.

The sealing element can be made of heat-resistant sheet steel.

The grooves may include a first groove laid in the direction of the pair of rollers, and second grooves connected to both ends of the first groove. The second grooves can be formed in the direction along the axis of the pair of rollers.

It is desirable that the length of the guide tubes is increased for the guide tubes further away from the center of the span.

At the end portion and in the area around the end portion of each guide tube of greatest length, this tube may overlap the surface of the side plate.

It is desirable that on the surface of the side plate on the side of the pair of rollers an inclined fallen part is formed and that this part overlaps with the guide tube.

In the center of the sunken part of the side plate, a stepped part can be formed, located along the direction of the location of the rollers.

It is desirable to form the stepped part on the guide pipe.

It is desirable that the stepped part of the side plate and the stepped part of the guide tube face each other.

The device for making compacted iron according to the invention may also have a support for supporting the side plates, which can be attached to the side plate on the opposite side of the gap so that the side plate is between the support and the gap. An internal volume adjacent to the side plate can be formed on the surface of the support.

The device for producing compacted cast iron according to the invention may also have a device for pressing the side plate against the gap. This device can be flexible.

The device for pressing the side plate has a rod, one end of which is adjacent to the side plate for pressing and supporting this plate, and a sunken part at the other end; tension spindle, combined with the fallen part of the rod, the outer surface of which has helical grooves; a support with a hole through which the rod passes; a block with a hole through which the tension spindle is screwed and connected to this hole; a spring inserted into the tension spindle; and a guide member through which the tension spindle passes through the guide member and can be connected to both sides of the support.

It is desirable that the device for pressing the side plate has a shape similar to the shape of the rod. It is advisable to install at least three side board clamping devices.

The side plate clamping device according to the invention may, in addition, have a frame mounted on the outer side of the pair of rollers, and the side plate clamping device may pass into this frame and support the side plate.

The support, the block, the spring and the guide element can be connected to each other in order from the rod to the tension spindle.

It is desirable that both ends of the guide element are bent in the pressing direction and that the guide element is connected to the supporter at both ends.

A stepped portion may be formed on the inner surfaces of both bent ends of the guide member to limit the movements of the block.

The central part of the support can be inserted between the bent parts of the guide element and can be connected to the guide element with pins.

The guide member may have the ability to rotate approximately 90" around the studs.

It is desirable that the guide element covers the block and the sides of the spring.

It is desirable that the block has the shape of a rectangular parallelepiped, and both sides of the block face the outer surface of the guide element.

The end part of the support can extend to both sides of the support and can be adjacent to the guide element.

The device for making molten iron according to the invention includes the above-mentioned device for making compacted iron; a grinder for grinding compacted iron loaded from a device for making compacted iron; and a melting gas generator, into which compacted cast iron crushed by a grinder is loaded and melted.

At least one of the coals selected from the group consisting of lumpy coal and coal briquettes can be loaded into the melting gas generator.

The above-described and other features and advantages of the invention are considered in detail in typical embodiments with reference to the drawings, in which:

Fig. 1 is a schematic perspective view of a device for the production of compacted cast iron according to the first embodiment of the invention,

Fig. 2 - a schematic cross-sectional view along line AA Fig. 1, Fig. 3 - a schematic perspective view of the side plates Fig. 2, Fig. 4 - a cross-section of the device for the production of compacted cast iron according to the second embodiment of the invention,

Fig. 5 - a schematic view of the device for pressing the side plate Fig. 4,

Fig. 6 - a folded device for pressing the side plate of Fig. 5,

Fig. 7 - a diagram of the method of disassembling the device for pressing the side plates Fig. 4,

Fig. 8 is a diagram of a device for the production of molten iron with a device for the production of compacted iron according to the first embodiment of the invention.

Next, typical embodiments of the invention are considered with reference to the drawings to explain the operation of the device according to the invention. However, the invention can be embodied in various modifications and is not limited to the described embodiments.

Embodiments of the invention are illustrated in Fig. 1-8, are only illustrative and do not limit the invention.

Fig. 1 contains a schematic representation of the device 100 for the production of compacted cast iron, which includes a loading hopper 10 and a pair of rollers 20. The ends of the rollers are connected by a toothed mesh and rotate together. The structure of the device for the production of compacted cast iron in Fig. 1 only illustrates the invention and does not limit it. Therefore, the device for the production of compacted cast iron can be modified and have a different design.

The reclaimed materials containing fine reduced iron are loaded into the charging hopper through the hole 16 located in the center of it in the direction shown by arrow A". The reclaimed materials containing fine reduced iron are made from iron ore, and these materials also contain sintered additives and undergo recovery by passing through multi-stage fluidized bed reactors Recovered materials containing fine reduced iron produced by other methods may also be loaded into loading hopper 10. Vents 14 at the top of loading hopper 10 remove gas generated by hot small reclaimed cast iron.

The loading hopper 10 has guide pipes 70 extending downwards and, entering the magazine 30 self-stacking located below, connected to them. The store 30 self-stacking tightly fits the side boards 80 (Fig. 2), which overlap with the guide tubes 70 along the direction of the axes of the rollers 20 (axis M).

Loading hopper 10 has auger feeders 12 which feed recovered materials containing fine reduced iron from loading hopper 10 into the gap between the pair of rollers 20, i.e. the cavity between the rollers along the length of the pair of rollers. Screws 122 (Fig. 2), driven by a motor (not shown, installed at the lower end of the screw feeders 12), feed reduced materials containing fine reduced iron, which collects in the lower parts under the action of gravity. Scrapers 124 (Fig. 2), installed on the screw feeders 12, remove the small reclaimed iron adhering to the inner walls of the loading hopper 10.

A pair of rollers 20 is located in the housing 24. The rollers of the pair 20 are separated from each other and have a gap between them. A pair of rollers 20 compresses the reclaimed materials containing the fine reclaimed iron loaded by the screw feeders 12, and thus produces compacted iron. On the outer side, the roller 20 has a cover 26.

Fig. 2 illustrates a section of the device for the production of compacted cast iron, illustrated in Fig. 1. In the circle on

Fig. 2 in an enlarged view shows the side plate 80, which supports both sides of the pair of rollers 20.

Recovered materials containing fine reclaimed iron are loaded into self-stacking store 30 by screw feeders 12 through guide tubes 70. Self-stacking store 30 is located below loading hopper 10 and feeds reclaimed materials containing fine reclaimed iron to a pair of rollers 20. Self-stacking store 30 forms the lower volume extending to the loading hopper 10, and has a structure that ensures the formation of an inert layer of a large amount of loaded reduced materials containing fine reduced iron. Therefore, this ensures the supply of recovered materials containing fine recovered cast iron to the center of the gap of the pair of rollers 20. In addition, the lengths of the guide pipes 70 are greater in the pipes 70, which are further away from the center of the gap. Thanks to this, the recovered materials containing fine recovered cast iron are evenly distributed in the internal volume of the magazine 30 of self-stacking, and this ensures the uniformity of the production of compacted cast iron in the center of the rollers. The end portions 701 and the area around the end portions 701 of the guide tubes 70 corresponding to the longest of the guide tubes 70 overlap with the surfaces of the side plates 80. Therefore, the reclaimed materials containing fine reclaimed iron loaded from the guide tubes 70 are not washed out and continuously are fed into the gap between rollers 20.

The side plates 80 are installed on both sides of the gap between the rollers 20, and they prevent the flow of reduced materials containing fine reduced iron from this gap.

A large amount of reclaimed materials containing fine reclaimed iron enters the lower part of the magazine 30 of the self-stacker 30 and is retained there, increasing the possibility of leaching of the fine reclaimed iron to the outside. To avoid this phenomenon, it is necessary to tightly close the part located between the self-stacking magazine 30 and the side plates 80. For this purpose, a groove 82 is formed, closely adjacent to the self-stacking magazine 30, on the upper parts of a pair of side boards 80, and the self-stacking magazine 30 is held by a sealing element 84 in grooves 82. This deflects the leaching of fine reduced cast iron outwards. Since the sealing member 84 has a slope, the washed fine reclaimed iron is retained in the lower part of the sealing member 84 and does not escape to the outside. Therefore, the reclaimed materials containing fine reclaimed iron and entering the store 30 self-laying are not washed out, and this ensures the stability of the manufacturing process.

As shown in the enlarged circle of Fig. 2, a step part 703 is formed on each guide pipe 70. A step part 861 is also formed in the center of the concave part 86 of each side plate 80 along the direction of the rollers 20. Since the step part 703 of the guide pipe 70 and the step part 861 side plate 80 face each other, the fine reduced iron cannot flow through the overlapping area between the guide tube 70 and the side plate 80, that is, the gap between the guide tube 70 and the side plate 80 is obstructed by the step parts adjacent to each other and divert leaching of reclaimed cast iron to the outside.

The compacted iron manufacturing apparatus also includes a support 88 for holding the side plates 80, which is attached to the side plates 80 on the opposite side of the gap and ensures the proper location of the side plates 80. The support 88 supports the side plates 80. The upper part of the support 88 projects towards the top of the magazine. 30 self-imposition. The side plates 80 can be installed through the top opening of the self-stacking magazine 30. An internal cavity 89 is formed on the surface of the supporter 88 adjacent to the side plates 80. Therefore, the area in which the supporter 88 is adjacent to the side plates 80 is minimized, which ensures even distribution of heat and eliminates obstacles to heat transfer.

Fig. 3 contains an enlarged view of the side plates from Fig. 2. The enlarged circle in Fig. 3 shows in detail the groove 82 formed in the upper parts of the side plates 80.

Although not shown in Fig. 3, a pair of rollers is installed in the direction of the X axis between the side plates 80 mounted along the Y axis. hole 87 for fastening it with bolts. The hole 87 is made deep to compensate for the thermal expansion and contraction of the side plates 80.

The groove 82 is made on the upper part of the side boards 80 and fits tightly to the self-stacking magazine 30 (Fig. 2). The sealing elements 84 installed along the groove 82 can be secured by welding or in some other way.

As shown in the circle in FIG. 3, each of the grooves 82 includes a first groove 822 and a pair of second grooves 824.

The first groove 822 extends in the direction of the pair of rollers (not shown). The second grooves 824 are connected to both ends of the first groove 822 and lie along the axis of the pair of rollers. Since the first groove 822 and the second grooves 824 are arranged to surround the roller, and the groove 82 closely fits the magazine 30 of the self-imposition, the washing out of the fine recovered iron is significantly averted.

The inclined sealing elements 84 are installed in the groove 82 and fixed to the sides in this groove by welding or in some other way. In particular, it is desirable that the inclined surfaces of the sealing elements 84 are directed to the outer sides of the gap. Thus, the sealing elements 84 support the self-stacking magazine 30 with a snug fit against the side plates 80, directing any small reclaimed iron passing outward to the lower portions of the inclined surfaces of the sealing elements 84 and trapping it there. This method minimizes the leaching of fine reclaimed iron to the outside.

Since the sealing elements 84 are located close to the surface between the side plates 80 and the self-stacking magazine to prevent the fine reduced iron from being washed out, they are in a hot environment. Therefore, sealing elements 84 should preferably be made of heat-resistant sheet steel to withstand hot temperatures. A stainless steel such as 57531 can be used for this

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A stepped part 861 and an inclined fallen part 86, formed on the surface of each side plate 80, are turned to face the pair of rollers in the direction along the location of the rollers and overlap with the guide pipes 70 (Fig.2). This allows you to divert the leaching of fine reclaimed iron, which is loaded from the guide pipes, and thus stabilizes the manufacturing process.

In a compacted iron plant having this structure, the side plates minimize the leaching of fine reclaimed iron to the outside. This allows you to avoid an increase in the cost of manufacturing reclaimed materials containing fine reclaimed iron, and also to stabilize the manufacturing process.

Fig. 4 contains the internal structure of the device 150 for the production of compacted cast iron according to the second embodiment of the invention. The structure of the device 150 for making compacted iron according to the second embodiment of the invention is similar to the structure of the device 100 for making compacted iron according to the first embodiment, except for the device 90 for pressing the side plates. The same numerical designations of elements are used.

The side plate clamping device 90 presses the side plates 80 against the gap, providing a more stable fixation of the side plates 80. This can effectively prevent the leaching of fine reclaimed iron. Since the side plate clamping device 90 is bendable, it can be disassembled and reassembled at each preventive inspection of the side plates 80.

Since the side plate clamping device 90 is rod-shaped, it allows the side plates 80 to be supported at multiple points. At least three sideplate clamping devices 90 are provided to clamp the sideplates 80, thereby effectively deflecting leaching of fine reclaimed iron. Since the side plates 80 are almost triangular in shape, it is desirable that these three side plate pressing devices 90 be mounted in a triangle shape.

The frame 29 protects the elements of the device 150 for making compacted cast iron from the outside. The side plate clamping device 90 passes through the frame 29 and supports the side plates 80. Accordingly, although pressure is applied to the side plates 80, this pressure is resisted by the side plate clamping device 90 supported by the frame 29.

The structure of the side plate clamping device 90 according to an embodiment of the invention is discussed below with reference to Fig.5.

Fig. 5 contains an enlarged view of the device 90 for pressing the side boards from Fig. 4. The structure of the device 90 for pressing the side plates (Fig. 5) only illustrates the invention without limiting it. Therefore, the side plate clamping device 90 can be modified.

Each side plate clamping device 90 includes a rod 92, a supporter 94, a block 96, a spring 98, a guide member 91, and a tension spindle 93. The supporter 94, a block 96, a spring 98, and a guide member 91 are connected to each other in order from the rod 92 to the tension spindle 93.

Rod 92 has the shape of a rod. The left end of the rod 92 (Fig. 5) is adjacent to the side plate and creates pressure on it. At the right end of the rod 92 is a fallen part 921, made with a drill. A tension spindle 93 is included in this part 921. A separation pin (not shown) is inserted into the hole 901 in the center of the rod 92, which prevents the separation of the side plate clamping device 90 during disassembly of the side plate clamping device 90 from the compacted iron making device 150.

The rod 92 passes through a hole in the support 94. The end portion 941 of the support 94 protrudes outward on both sides, and therefore the support 94 has a T-shape. The support 94 is located adjacent to the guide element 91. A hole 943 in the center of the support 94 ensures its connection to the guide element 91 with a pin 905. In addition, there is a pair of holes 945 in the end part 941 of the support 94 connected to the frame 29 (Fig. 4) screws 903 through holes 945. This ensures reliable fixation of the device 90 for pressing the side plates.

Block 96 has the shape of a rectangular parallelepiped. The tension spindle 93 through the hole in the block 96 under the action of the spring 98 moves back and forth in the pressing direction.

The spring 98 has the form of stacked plates and is inserted into the tension spindle 93 between the block 96 and the guide element 91. The rod 92 is pressed against the side plate by the movement of the block 96 under the action of the pressing force.

Both ends of the guide element 91, through which the tension spindle 93 passes, are bent in the pressing direction (the left direction in Fig. 53. Therefore, the guide element 91 has a c-like shape. The central part of the supporter 94 is inserted between the bent parts of the guide element 91 and z' connected to the guide element 91 with pins 905. The stepped part 911, formed on the inner surfaces of both the fastened ends of the guide element 91, has a connection with the block 96 and limits its movement.

The tension spindle 93 has the shape of a cylinder and, having a connection with the sunken part 921 of the rod 92, creates pressure on the rod 92. The protruding part 931 at the front end of the tension spindle 93 is connected to the sunken part 921 of the rod 92, due to which the sinking of the spindle 93 is turned away. .Since the bolt 933 at the rear end of the tension spindle 93 has a hex head, the tension spindle 93 can be rotated smoothly. In addition, a screw groove is made on the outer surface of the tension spindle 93, so that the tension spindle 93 can have a screw connection with the hole of the block 96. Therefore, the tension spindle 93 can press the spring 98, moving the block 96 back and forth.

Fig.b6 illustrates the device 90 for pressing the side boards 90 from Fig.5, in which all elements are connected to each other.

The rod 92, connected at one end to the tension spindle 93, is moved forward by the rotation of the bolt head 933 of the tension spindle 93. By this, the side plate 80 adjacent to the other end of the rod 92 can be pressed by the internal pressure of the compacted iron making device 150, and then can press device 90 pressing. However, this pressure can be buffered because the block 96 and the spring 98 of the device 90 pressing the side plates 90 create an opposition.

The guide element 91 covers the sides of the block 96 and the spring 98 and has a connection with the rod 92. Therefore, the block 96 and the spring 98 located between the supporter 94 and the guide element 91 cannot be disconnected. In addition, since the block 96 having the shape of a rectangular parallelepiped is in front of the inner surface of the guide member 91, the block 96 cannot rotate. Thus, the sideboard clamping device 90 can continuously generate a uniform clamping force applied to the sideboards 80.

Since the guide member 91 is connected to the support 94 by pins 905, it can be rotated about 90" about the pins 905 as an axis. Therefore, since the rod 92 can move freely back and forth, the side plate clamping device 90 can be separated from the device 150 to production of compacted cast iron during repair work with side plates 80.

Fig. 7 illustrates the procedure for disassembling the device 90 for pressing the side plates, built into the device for the production of compacted cast iron. By rotating the guide member 91, the rod 92 can be separated from the device for producing compacted iron in the direction shown by the arrow.

First, the tension spindle 93 is turned and then separated from the rod 92. Next, the guide element 91 is turned downwards. Since the end portion of the rod 92 protrudes outward, it can be pulled out. With these operations, the device 90 for pressing the side plates can be easily disassembled. Since the side plate clamping device 90 can be easily separated when working with the side plates 80, the replacement and maintenance of the side plates 80 is simplified.

Figure 8 illustrates a device 200 for the production of molten iron, equipped with a device 100 for the production of compacted iron according to the first embodiment of the invention. The device 200 for making molten iron with the device 100 for making compacted iron according to the first embodiment of the invention, shown in Fig.8, only illustrates the invention without limiting it. The device 200 for the production of molten iron can be equipped with the device 150 for the production of compacted iron according to the second embodiment of the invention.

The device 200 for the production of molten iron (Fig. 8) includes the device 100 for the production of compacted iron, a grinder 40 and a melting gas generator 60. The grinder 40 grinds the compacted iron loaded from the device 100 for the production of compacted iron. Compacted cast iron, crushed in the grinder 40, is loaded into the melting gas generator 60, where it is melted. In addition, a storage hopper 50 may be used to temporarily store the compacted iron crushed in the grinder 40. Since the structure of the grinder 40 and the melting gas generator 60 are clear to those skilled in the art, further explanation is unnecessary.

At least one coal selected from the group consisting of lump coal and coal briquettes is loaded into the melting gas generator 60. Lumpy coal is, for example, coal with a particle size of 8 mm or more, and coal briquettes are made by collecting coal with a particle size of 8 mm or less, which comes from the region of manufacture, followed by sawing and forming by pressing.

A compacted coal layer is formed in the melting gas generator 60 when loading lumpy coal or coal briquettes. Oxygen is supplied to the melting gas generator 60 and compacted cast iron is melted. Cast iron melt is discharged through the discharge hole. The cast iron melt produced in this way is of high quality.

Since the device for producing compacted iron according to the invention includes side plates connected to the guide pipes, the leaching of fine recovered iron can be effectively avoided.

Since the recessed parts on the surfaces of the side plates are inclined and overlap with the guide tubes, the guide tubes are convenient to install.

Since the stepped portion provided in the center of each sunken portion of each side plate corresponds to the direction of the rollers, this creates a certain advantage in making the sunken parts convenient to manufacture.

The support has an internal cavity, thanks to which an even distribution of heat is ensured and the deviation of the side boards from sudden overheating is prevented.

Since the device for producing compacted iron according to the invention includes a device for pressing the side plates, the side plates are provided with an effective pressing.

Since the side plate clamping device is rod-shaped, the clamping position can be easily changed and multiple such positions can be created.

Since the side plate clamping device passes through the frame and is supported by it, the side plates are tightly clamped.

Since the guide element can be rotated approximately 90", the side plate clamping device can be easily disassembled.

The device for the production of molten iron according to the invention includes the above-described device for the production of compacted iron, thanks to which the quality of the production of molten iron is increased.

The invention has been described using examples of typical embodiments, but it is clear that changes in form and details are permissible within the scope of the concepts and scope of the invention defined by the Formula of the invention. where 1

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Claims (31)

1. A device for the production of compacted iron, which has: - a loading hopper for loading recovered materials containing fine recovered iron, and which has guide pipes directed downwards; - a pair of rollers spaced apart from each other with a gap between them for compaction of reduced materials containing fine reduced iron discharged from the loading hopper, and suitable for the production of compacted iron; and - a pair of side plates which are installed on the sides of the pair of rollers to deflect the flow of recovered materials containing fine recovered iron, which enter the gap and overlap with the guide pipes in the direction of the axes of the rollers. 2. The device according to claim 1, which is characterized by the fact that it additionally has a feeder for supplying recovered materials containing fine recovered iron to the pair of rollers. C. The device according to claim 2, which differs in that the upper parts of the side plates are made of grooves that tightly fit the feeder. 4. The device according to claim 3, characterized in that the side plates have sealing elements for retaining recovered materials containing fine recovered iron, and the sealing elements are installed in grooves located along these grooves. 5. The device according to claim 4, which differs in that the sealing elements are laterally connected to the grooves and have an inclination relative to these grooves. 6. The device according to claim 5, which is characterized by the fact that the inclined surfaces of the sealing elements are directed to the outer sides of the gap. 7. The device according to claim 5, which is characterized by the fact that it additionally has a feeder for feeding the reclaimed materials containing fine reclaimed iron to the pair of rollers, and the sealing elements support this feeder. 8. The device according to claim 5, which is characterized by the fact that the sealing elements are made of heat-resistant sheet steel. 9. The device according to item C, characterized in that the grooves include a first groove laid in the direction of the location of the pair of rollers, and second grooves connected to both ends of the first groove and laid in the direction along the axis of the pair of rollers. 10. The device according to claim 1, which is characterized by the fact that the length of the guide pipes is greater in the pipes further away from the center of the gap. 11. The device according to claim 10, which is characterized by the fact that the end part and the zone around the end part of the guide tubes of the greatest length are overlapped by the surfaces of the side plates. 12. The device according to claim 10, which is characterized by the fact that on the surfaces of the side plates, fallen parts are formed, which are directed by the front part to a pair of rollers and are overlapped by guide pipes. 13. The device according to claim 12, which is characterized by the fact that stepped parts are formed in the center of the fallen parts of the side plates along the direction of the location of the rollers. 14. The device according to claim 13, which is characterized by the fact that stepped parts are formed on the guide pipes. 15. The device according to claim 14, which is characterized by the fact that the stepped parts of the side plates and the stepped parts of the guide tubes face each other. 16. The device according to claim 1, which is characterized by the fact that it additionally has a support for supporting the side plates, attached to the side plates on the opposite side of the gap in such a way that the side plates are located between the support and the gap, and on the surfaces of the supports adjacent to the side plates, internal cavities are formed. 17. The device according to claim 1, which is characterized by the fact that it additionally has a device for pressing the side plates to the gap, capable of bending. 18. The device according to claim 17, which differs in that the device for pressing the side plates has: - a bar, one end of which is located adjacent to the side plates for pressing and supporting the side plates, and its other end has a fallen part; - a tension spindle connected to the fallen part of the rod, the outer surface of which has a groove in the form of a screw thread; - a support with a hole through which the rod passes; - a block with a hole into which the tension spindle is screwed and connected to this hole; - a spring inserted into the tension spindle; and - a guide element through which the tension spindle passes and which is connected to both sides of the support. 19. The device according to claim 18, which is characterized in that the device for pressing the side plates has the shape of a rod. 20. The device according to claim 18, which is characterized by the fact that at least three devices for pressing the side plates are installed in it. 21. A device according to claim 18, characterized in that the side plate clamping device further has a frame mounted on the outer side of the pair of rollers and, passing into this frame, is capable of supporting the side plates. 22. The device according to claim 18, which is characterized by the fact that the support, the block, the spring and the guide element are connected to each other in order from the rod of the tension spindle. 23. The device according to claim 18, characterized in that both ends of the guide element are bent in the pressing direction, and the guide element is connected to both sides of the support. 24. The device according to claim 18, which is characterized by the fact that stepped parts are formed on the outer surfaces of both bent ends of the guide element to limit the movements of the block. 25. The device according to claim 18, which is characterized by the fact that the central part of the guide element, located between its bent parts, is connected to the guide element with pins. 26. The device of claim 25, wherein the guide member is rotatable about 90" about the pins as an axis. 27. The device according to claim 18, characterized in that the guide element covers the block and the sides of the spring. 28. The device according to claim 27, which differs in that the block has the shape of a rectangular parallelepiped and its two sides are directed to the surface of the guide element. 29. The device according to claim 18, characterized in that the end part of the supporter protrudes outward from both sides of the supporter and is adjacent to the guide element. 30. A device for the production of molten iron, which has: - a device for the production of compacted iron according to claim 1; - a grinder for crushing the compacted cast iron discharged from this device for the production of compacted cast iron; and - a melting gas generator for melting compacted cast iron, crushed by a grinder and loaded into a melting gas generator. 31. The device according to claim 30, which is characterized by the fact that the melting gas generator is designed to use in it at least one type of coal selected from the group consisting of lump coal and coal briquettes.