Reaction furnace body for smelting ferrotungsten alloy

Abstract

A reaction furnace body for ferro-tungsten alloy smelting comprises a base plate, a reaction ring, a quartz sand layer and a protective layer generating device, a circle of groove is formed in the upper surface of the base plate, the reaction ring is connected with the groove in the base plate in a clamped mode, the quartz sand layer is arranged on the base plate and located at the bottom of the reaction ring, and a row of air holes are formed in the base plate. The ventilation holes are filled with quartz sand, the protection layer generating device is located above the reaction ring so as to pour protection slurry to the inner wall of the reaction ring, the protection layer generating device comprises a supporting ring, a shrinkage opening and an inner baffle ring, the inner wall of the supporting ring is fixedly connected with the upper end of the shrinkage opening, the supporting ring is provided with a plurality of pouring openings for pouring a protection layer material, and the inner baffle ring is provided with an inner baffle ring. The lower end of the contraction opening is fixedly connected with the upper end of the inner baffle ring, the diameter of the inner baffle ring is smaller than that of the reaction ring, the height of the inner baffle ring is smaller than or equal to that of the reaction ring, and a gap between the reaction ring and the inner baffle ring is filled with a protective layer material.

Description

Technical Field

[0001] The utility model relates to the technical field of metallurgical equipment, in particular to a reaction furnace body used for smelting tungsten-iron alloy. Background Art

[0002] During the alloy production process outside the furnace, the smelting furnace body needs to be built and knotted. The commonly used knotting materials are magnesium refractory materials such as magnesia, aluminum refractory materials such as alumina, and silicon refractory materials such as quartz sand. Generally, the sides and bottom of the smelting furnace body are fixed together. After the tungsten iron alloy is smelted and fully cooled, the alloy ingot is turned over and poured out. This method cools the alloy ingot slowly and is inconvenient to turn over.

[0003] Based on this, the Chinese utility model with patent number 201821089379.8 and the name of "A mobile tungsten iron smelting furnace" adopts a solution including an iron plate and a furnace body, the furnace body is located on the top of the iron plate, the top surface of the iron plate is paved with a quartz sand layer, the quartz sand layer is provided with a furnace body mounting groove matching the bottom of the furnace body, the outer wall of the iron plate is provided with an arc door that can be opened and closed, the bottom of the inner wall of the furnace body is provided with an annular reinforcement sand layer, the interior of the reinforcement sand layer forms a sand pit, the outer walls of the furnace body are provided with lifting ears on both sides, and the bottom of the iron plate is provided with a number of water leakage holes. This solution speeds up the cooling rate of the alloy ingot through a separate design, and is convenient for transferring the alloy ingot. However, after long-term use, the furnace body is repeatedly corroded and eroded by the reaction slag, and the life of the side wall of the furnace body is shortened, resulting in an increase in the production cost of tungsten iron alloy. Summary of the invention

[0004] In view of this, it is necessary to provide a reaction furnace body for smelting tungsten-iron alloy, in which the reaction slag will not corrode the side wall of the furnace body during the thermite reaction.

[0005] A reaction furnace body for smelting tungsten-iron alloy comprises a chassis, a reaction ring, a quartz sand layer, and a protective layer generating device. The upper surface of the chassis is provided with a circle of grooves, the reaction ring is snap-connected with the grooves on the chassis, the quartz sand layer is arranged on the chassis and is located at the bottom of the reaction ring, the chassis is provided with a row of air holes, the air holes are filled with quartz sand, the protective layer generating device is located above the reaction ring to pour protective slurry onto the inner wall of the reaction ring, the protective layer generating device comprises a support ring, a shrinkage port, and an inner retaining ring, the inner wall of the support ring is fixedly connected to the upper end of the shrinkage port, the support ring is provided with a plurality of pouring ports to pour protective layer material, the lower end of the shrinkage port is fixedly connected to the upper end of the inner retaining ring, the diameter of the inner retaining ring is smaller than the diameter of the reaction ring, the height of the inner retaining ring is smaller than or equal to the height of the reaction ring, and the gap between the reaction ring and the inner retaining ring is used to fill the protective layer material.

[0006] Preferably, the contraction opening is vertically provided with a plurality of partition bars along the downward sliding direction, and the protective layer material slides down within the range defined by the partition bars.

[0007] Preferably, the side wall of the inner retaining ring is provided with an electric heating wire to dry the protective layer material.

[0008] Preferably, the reaction circle is built with magnesia bricks.

[0009] Preferably, the quartz sand layer is bowl-shaped.

[0010] Preferably, the chassis is made of steel.

[0011] Preferably, the outer wall of the reaction circle is provided with a first hanging ear to facilitate hanging the reaction circle.

[0012] Preferably, the outer wall of the support ring is provided with a second hanging ear to facilitate hanging the support ring.

[0013] Beneficial effect: When assembling the utility model, the chassis is first placed on a flat ground, the reaction ring is then placed on the groove of the chassis, a quartz sand layer is then laid on the bottom of the reaction ring, and then the protective layer generating device is suspended above the reaction tank. At the same time, the inner retaining ring of the protective layer generating device is placed in the reaction ring, and the inner retaining ring and the reaction ring are arranged coaxially as much as possible. Then, the protective layer material is injected into the filling port of the support ring, so that the protective layer material slides down along the contraction port, and finally slides into the gap between the reaction ring and the inner retaining ring as a protective layer, until the protective layer material fills the gap. Then, the raw material for producing tungsten iron is poured into the inner retaining ring until it reaches a predetermined height. After the raw material is smoothed, the protective layer generating device is lifted, and the protective layer material is sandwiched between the inner retaining ring and the reaction ring as a protective layer during the reaction process. In this way, during the reaction process, the splashed reaction slag is absorbed by the protective layer, so that the reaction ring will not be damaged. After the tungsten iron is generated, the reaction ring is lifted or removed, and the protective layer slides down under the action of gravity or after being knocked and separated from the tungsten iron alloy. The protective layer material can then be reused after processing, which saves resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a schematic diagram of the structure of a reaction furnace body used for smelting tungsten-iron alloy.

[0015] Figure 2 It is a cross-sectional view of a reaction furnace body used for smelting tungsten-iron alloy according to the utility model.

[0016] In the figure: a reaction furnace body 10 for smelting tungsten-iron alloy, a bottom plate 20, a groove 201, a vent hole 202, a reaction circle 30, a first hanging ear 301, a quartz sand layer 40, a protective layer generating device 50, a support ring 501, a pouring port 5011, a contraction port 502, a partition bar 5021, an inner retaining ring 503, a heating wire 5031, and a second hanging ear 5032. DETAILED DESCRIPTION

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Please see Figure 1 and Figure 2 A reaction furnace body 10 for tungsten-iron alloy smelting includes a chassis 20, a reaction circle 30, a quartz sand layer 40, and a protective layer generating device 50. The upper surface of the chassis 20 is provided with a circle of grooves 201, the reaction circle 30 is engaged with the grooves 201 on the chassis 20, the quartz sand layer 40 is arranged on the chassis 20 and is located at the bottom of the reaction circle 30, the chassis 20 is provided with a row of air holes 202, the air holes 202 are filled with quartz sand, and the protective layer generating device 50 is located above the reaction circle 30 to pour protective slurry on the inner wall of the reaction circle 30. The protective layer generating device 50 comprises a supporting ring 501, a shrinking opening 502 and an inner retaining ring 503. The inner wall of the supporting ring 501 is fixedly connected to the upper end of the shrinking opening 502. The supporting ring 501 is provided with a plurality of infusion openings 5011 for infusing the protective layer material. The lower end of the shrinking opening 502 is fixedly connected to the upper end of the inner retaining ring 503. The diameter of the inner retaining ring 503 is smaller than the diameter of the reaction circle 30. The height of the inner retaining ring 503 is smaller than or equal to the height of the reaction circle 30. The gap between the reaction circle 30 and the inner retaining ring 503 is used to fill the protective layer material.

[0019] The chassis 20 of the utility model mainly plays a supporting role, and a reaction circle 30 and a quartz sand layer 40 are placed on the chassis 20. A row of air holes 202 are provided on the chassis 20. During the reaction process, moisture will be discharged from the air holes 202 to prevent the alloy from having pores. At the same time, after the reaction is completely completed to generate tungsten-iron alloy, during the cooling process, during the water cooling, excess water will flow out of the air holes 202 through the quartz sand layer 40. The groove 201 on the chassis 20 mainly plays the role of positioning and preventing the reaction circle 30 from moving. This is also available in the prior art and plays basically the same role.

[0020] The reaction circle 30 of the utility model mainly plays the role of containing the tungsten-iron alloy raw material. After the final thermite reaction, the shape of the tungsten-iron alloy is the same as the shape surrounded by the reaction circle 30.

[0021] The quartz sand of the utility model mainly plays a role of high temperature resistance. At the same time, after the tungsten-iron alloy is shaped, it can prevent the alloy from sticking to the chassis 20, which is convenient for the separation of the tungsten-iron alloy. In a preferred embodiment, the quartz sand layer 40 is composed of a wet layer and a dry layer. The wet layer of quartz sand is made by sprinkling water on the dry quartz sand until it can be held in the hand and compacted after the quartz sand is laid. After that, before the tungsten-iron raw material enters the furnace body, a layer of dry quartz sand is sprinkled on the surface of the wet layer of quartz sand as a dry layer.

[0022] The protective layer generating device 50 of the utility model is mainly used to make a protective layer, so that the reaction slag of the tungsten iron raw material during the thermite reaction process will not splash onto the reaction circle 30, corrode and scour the reaction circle 30, thereby extending the service life of the reaction circle 30. The protective layer is made of high temperature resistant material. The produced protective layer can be either a dry protective layer or a wet protective layer. For example, quartz sand can be poured along the filling port 5011 of the support ring 501, and the quartz sand will enter the gap between the inner retaining ring 503 and the reaction circle 30 along the contraction port 502 until it is filled. For another example, calcium oxide slurry can be poured along the filling port 5011 of the support ring 501 until it is filled.

[0023] Since the gap between the reaction ring 30 and the inner retaining ring 503 is small, in order to smoothly fill the protective layer material, the protective layer generating device 50 is provided with a contraction opening 502. At the upper part of the contraction opening 502, the incoming material will be spread out, and the incoming material will be flattened. When it falls above the gap, although the opening is tightened, it can still be ensured that the incoming material enters the gap when the material discharge amount can be adjusted.

[0024] In a preferred embodiment, the contraction port 502 is vertically provided with a plurality of partition bars 5021 along the downward direction, and the protective layer material slides down within the range defined by the partition bars 5021. In this way, when the falling speeds of the materials at different filling ports 5011 are different, it can be ensured that the materials that finally slide into the gaps in all directions are the same.

[0025] When the protective layer material is slurry, in order to prevent excessive water in the slurry from penetrating into the tungsten-iron alloy raw material, in a preferred embodiment, the side wall of the inner retaining ring 503 is provided with a heating wire 5031 to dry the protective layer material. The slurry is dried until the protective layer material has fluidity that cannot penetrate into the tungsten-iron alloy raw material.

[0026] Since the heat generated in the thermite reaction will also be conducted to the reaction circle 30 through the protective layer, the material of the reaction circle 30 also needs to be resistant to high temperatures. Therefore, in a preferred embodiment, the reaction circle 30 is built with magnesia bricks. The magnesia bricks can be removed after the reaction.

[0027] The bottom of the reaction circle 30 is subjected to greater stress. In order to improve the local stress at the bottom of the reaction circle 30 and prevent the melt from leaking out of the gap between the reaction circle 30 and the bottom plate 20 or causing similar hidden dangers during the reaction of the tungsten-iron raw material, in a preferred embodiment, the quartz sand layer 40 is bowl-shaped. In this way, the quartz sand at the junction of the reaction circle 30 and the bottom plate 20 is thicker and arc-shaped, which can withstand greater stress and better protect the reaction circle 30.

[0028] In a preferred embodiment, the chassis 20 is made of steel. Steel has good load-bearing capacity and certain high temperature resistance, so steel is used as the chassis 20 material.

[0029] The reaction circle 30 is convenient to be lifted, so in a preferred embodiment, the outer wall of the reaction circle 30 is provided with a first hanging ear 301 to facilitate the hanging of the reaction circle 30 .

[0030] Likewise, in a preferred embodiment, the outer wall of the support ring 501 is provided with a second hanging ear 5032 to facilitate hanging the support ring 501 .

[0031] The suspended first hanging ear 301 or the second hanging ear 5032 is transported by a forklift or an overhead crane.

[0032] The above disclosure is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of the present invention. A person skilled in the art can understand that all or part of the processes of the above embodiments and equivalent changes made according to the claims of the present invention still fall within the scope of the present invention.

Claims

1. A reaction furnace body for smelting tungsten-iron alloy, characterized in that: It includes a chassis, a reaction ring, a quartz sand layer, and a protective layer generating device. The upper surface of the chassis is provided with a circle of grooves, the reaction ring is snap-connected with the grooves on the chassis, the quartz sand layer is arranged on the chassis and is located at the bottom of the reaction ring, the chassis is provided with a row of air holes, the air holes are filled with quartz sand, the protective layer generating device is located above the reaction ring to pour protective slurry onto the inner wall of the reaction ring, the protective layer generating device includes a support ring, a shrinkage port, and an inner retaining ring, the inner wall of the support ring is fixedly connected to the upper end of the shrinkage port, the support ring is provided with a plurality of pouring ports to pour the protective layer material, the lower end of the shrinkage port is fixedly connected to the upper end of the inner retaining ring, the diameter of the inner retaining ring is smaller than the diameter of the reaction ring, the height of the inner retaining ring is smaller than or equal to the height of the reaction ring, and the gap between the reaction ring and the inner retaining ring is used to fill the protective layer material.

2. The reaction furnace body for smelting tungsten-iron alloy according to claim 1, characterized in that: The shrinkage opening is vertically provided with a plurality of partition bars along the downward sliding direction, and the protective layer material slides down within the range defined by the partition bars.

3. The reaction furnace body for smelting tungsten-iron alloy according to claim 1, characterized in that: The side wall of the inner retaining ring is provided with an electric heating wire to dry the protective layer material.

4. The reaction furnace body for smelting tungsten-iron alloy according to claim 1, characterized in that: The reaction circle is built with magnesia bricks.

5. The reaction furnace body for smelting tungsten-iron alloy according to claim 1, characterized in that: The quartz sand layer is in a bowl shape.

6. The reaction furnace body for smelting tungsten-iron alloy according to claim 1, characterized in that: The material of the chassis is steel.

7. The reaction furnace body for smelting tungsten-iron alloy according to claim 1, characterized in that: The outer wall of the reaction circle is provided with a first hanging ear to facilitate hanging the reaction circle.

8. The reaction furnace body for smelting tungsten-iron alloy according to claim 1, characterized in that: The outer wall of the support ring is provided with a second hanging ear to facilitate hanging the support ring.

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