Electromagnetic induction converter

Abstract

The utility model provides an electromagnetic induction converter and belongs to the technical field of metallurgical equipment. The electromagnetic induction converter comprises an electromagnetic induction heating chamber, a heat conduction roller and a driving device, a heating coil is arranged on the outer surface of the electromagnetic induction heating chamber, and a containing cavity for containing the heat conduction roller is formed in the electromagnetic induction heating chamber; the heat conduction roller is arranged in the containing cavity, a reaction chamber used for metal oxide reaction is arranged in the heat conduction roller, and the heat conduction roller is connected with the driving device and used for rotating relative to the electromagnetic induction heating chamber. The heat-conducting roller is connected with reducing gas and is used for carrying out oxidation-reduction reaction in the reaction chamber; the driving device is connected with the heat conduction roller and used for driving the heat conduction roller to rotate. When the metal oxide reduction reaction is carried out, metal oxide minerals are overturned in the reaction process through the rotation of the heat conduction roller, so that the contact area of the metal oxide minerals and reducing gas is increased, the reduction reaction is promoted, and the reaction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of smelting equipment, and particularly relates to an electromagnetic induction converter. Background Art

[0002] In nature, most metals exist in the form of metal oxides. Therefore, the reduction of metal oxides is an important process in the metal smelting process. However, the metal oxides to be reduced in the reduction furnaces widely used on the market are generally heated and reduced and cooled and solidified at fixed reaction positions. In this process, the reduction furnace needs to be heated and cooled frequently, wasting a large amount of energy and not meeting the requirements of energy conservation and emission reduction.

[0003] Patent application CN117701884A discloses a method for heating and reducing oxide minerals, and at the same time discloses a hydrogen-based induction cooker, which is used in combination with an electric furnace smelting metallurgy. The induction cooker uses the principle of electromagnetic induction heating to heat the oxide minerals, and hydrogen is introduced to carry out a reduction reaction in a high-temperature air-sealed environment, so that the oxide minerals generate elemental metals, and then are sent out of the induction cooker at a high temperature and charged into the electric furnace smelting metallurgy for separation at a high temperature, which is a new two-stage metallurgical production method. There is no carbon emission from reduction to melting and separation, and it has the effect of energy conservation and carbon reduction. However, the induction cooker cannot be stirred during the whole reaction process, resulting in insufficient reaction. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides an electromagnetic induction converter, which drives a heat conduction drum to rotate through a driving device, so that the redox reaction is more sufficient.

[0005] To achieve the above purpose, the technical solution of the utility model is as follows:

[0006] An electromagnetic induction converter includes an electromagnetic induction heating chamber, a heat conduction drum and a driving device, wherein:

[0007] The outer surface of the electromagnetic induction heating chamber is provided with heating coils for heating the heat conduction drum, and the inside of the electromagnetic induction heating chamber is provided with a receiving cavity for receiving the heat conduction drum;

[0008] [[ID=(28)]]The heat conduction drum is arranged in the receiving cavity, and a reaction chamber for the reaction of metal oxides is arranged inside the heat conduction drum. The heat conduction drum is connected with the driving device for rotating relative to the electromagnetic induction heating chamber; the heat conduction drum is connected with a reducing gas for carrying out a redox reaction in the reaction chamber;

[0009] The driving device is connected with the heat conduction drum for driving the heat conduction drum to rotate.

[0010] Further, the heat-conducting drum includes a preheating front end, which is provided with a feed inlet, and the end of the heat-conducting drum is provided with a discharge outlet.

[0011] Further, the driving device includes a motor, a first transmission gear, and a second transmission gear arranged on the heat-conducting drum. The first transmission gear meshes with the second transmission gear. The first transmission gear is driven by the motor to rotate, thereby driving the second transmission gear and the heat-conducting drum to rotate.

[0012] Further, the driving device further includes a rotary supporting wheel and a supporting wheel slideway hoop. The rotary supporting wheel is installed on the support frame, and the supporting wheel slideway hoop is arranged on the heat-conducting drum. When the heat-conducting drum rotates, the supporting wheel slideway hoop rotates on the rotary supporting wheel.

[0013] Further, the rotary supporting wheel and the supporting wheel slideway hoop are arranged at the front and rear ends of the heat-conducting drum relative to the electromagnetic induction heating chamber.

[0014] Further, a sealing ring for preventing heat dissipation is provided at the connection between the electromagnetic induction heating chamber and the heat-conducting drum.

[0015] Further, the electromagnetic induction converter further includes an air-insulating diversion hood, which is installed on the base through a diversion hood support, and the air-insulating diversion hood is rotatably connected to the end of the heat-conducting drum.

[0016] Further, a gas input port for introducing a reducing gas is provided on the air-insulating diversion hood. The gas input port is communicated with the end of the heat-conducting drum, and a gas output port is provided at the front end of the heat-conducting drum.

[0017] Further, the appearance of the electromagnetic induction heating chamber is circular or square.

[0018] Further, the heating coil is connected to the frequency conversion control unit.

[0019] The beneficial effects of the present utility model are as follows:

[0020] In the present utility model, a heat-conducting drum that can rotate relative to the electromagnetic induction heating chamber is arranged in the electromagnetic induction heating chamber. When performing the reduction reaction of metal oxides, the rotation of the heat-conducting drum causes the metal oxide minerals to flip during the reaction process, increasing the contact area with the reducing gas, promoting the progress of the reduction reaction, and improving the reaction efficiency. The electromagnetic induction furnace body and the heat-conducting drum of the present invention are made of high-temperature-resistant composite conductive materials, and are suitable for the reduction production of various high-temperature oxide minerals and oxygen-containing metal oxide materials. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the present utility model.

[0022] 1. Base; 2. Preheating front end; 3. First driving gear; 4. Motor; 5. Air isolation and diversion cover; 6. Heat conduction roller; 7. Electromagnetic induction heating chamber; 8. Discharge port; 9. Gas inlet; 10. Supporting roller track hoop; 11. Rotary supporting roller; 12. Feed inlet; 13. Sealing ring; 14. Support frame; 15. Gas outlet; 16. Heating coil. Specific implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0025] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present invention, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be directly connected, or indirectly connected through an intermediate medium, and can be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions conflicts with each other or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0028] See Figure 1, An electromagnetic induction converter, comprising an electromagnetic induction heating chamber 7, a heat conduction drum 6 and a driving device, wherein: a heating coil 16 is arranged on the outer surface of the electromagnetic induction heating chamber 7 for heating the heat conduction drum 6, and a receiving cavity for receiving the heat conduction drum 6 is arranged inside the electromagnetic induction heating chamber 7; the heat conduction drum 6 is arranged in the receiving cavity, a reaction chamber for the reaction of metal oxides is arranged inside the heat conduction drum 6, and the heat conduction drum 6 is connected to the driving device for rotating relative to the electromagnetic induction heating chamber 7; the heat conduction drum 6 is connected to a reducing gas for carrying out an oxidation-reduction reaction in the reaction chamber; the driving device is connected to the heat conduction drum 6 for driving the heat conduction drum 6 to rotate.

[0029] In this application, heating is carried out by the heating coil, and the heat is conducted to the heat conduction drum 6 for carrying out a reduction reaction on the metal oxide minerals placed inside the heat conduction drum 6. During the reduction reaction, the driving device drives the heat conduction drum 6 to rotate, so that the metal oxide minerals are turned over during the reaction, increasing the contact area with the reducing gas, promoting the progress of the reduction reaction, and improving the reaction efficiency. The electromagnetic induction furnace body and the heat conduction drum 6 are made of high-temperature-resistant composite conductive materials, which are suitable for the reduction production of various high-temperature oxide minerals and oxygen-containing metal oxide materials.

[0030] For the electromagnetic induction heating converter provided by the present utility model, when the oxide minerals or oxygen-containing metal oxides are calcined and reduced to elemental metal products and then discharged from the furnace at high temperature, in order to avoid re-oxidation when encountering air, the reduced elemental metal products can be directly sent into a hot-charging high-temperature hot press to be pressed into high-density square or round barrel-shaped products, preventing the elemental metal material products from re-oxidizing when contacting air at high temperature.

[0031] In an embodiment of this application, the heat conduction drum 6 includes a preheating front end 2, a feed inlet 12 is provided on the preheating front end 2, and a discharge outlet 8 is provided at the end of the heat conduction drum 6. The feed inlet 12 of the preheating front end 2 is used for feeding materials, and the discharge outlet 8 is used for discharging the reacted materials.

[0032] In an embodiment of this application, the driving device includes a motor 4, a first transmission gear 3, and a second transmission gear arranged on the heat conduction drum 6. The first transmission gear 3 and the second transmission gear are engaged. By driving the first transmission gear 3 to rotate through the motor 4, the second transmission gear and the heat conduction drum 6 are driven to rotate. The motor 4 is installed on the support seat of the base 1, the first transmission gear 3 is connected to the output shaft of the motor 4 and is driven to rotate through the motor 4. The second transmission gear is fixedly arranged on the preheating front end 2 of the heat conduction drum 6, and the second transmission gear and the heat conduction drum 6 are driven to rotate by driving the first transmission gear 3 to rotate through the motor 4.

[0033] In an embodiment of the present application, the driving device further includes a rotary supporting wheel 11 and a supporting wheel slideway hoop 10. The rotary supporting wheel 11 is installed on a supporting frame 14, and the supporting wheel slideway hoop 10 is arranged on the heat-conducting drum 6. When the heat-conducting drum 6 rotates, the supporting wheel slideway hoop 10 rotates on the rotary supporting wheel 11. There are at least two rotary supporting wheels 11, which are used to support the heat-conducting drum 6 and drive the heat-conducting drum 6 to rotate. The supporting wheel slideway hoop 10 is fixedly arranged on the heat-conducting drum 6 and rotates relative to the rotary supporting wheel 11 together with the heat-conducting drum 6. Further, the rotary supporting wheel 11 and the supporting wheel slideway hoop 10 are arranged at the front and rear ends of the heat-conducting drum 6 relative to the electromagnetic induction heating chamber 7.

[0034] In an embodiment of the present application, a sealing ring 13 for preventing heat dissipation is provided at the connection between the electromagnetic induction heating chamber 7 and the heat-conducting drum 6. The sealing ring 13 is made of a high-temperature resistant material. The function of the high-temperature resistant sealing ring 13 is to prevent heat loss due to an excessive gap between the electromagnetic induction chamber and the heat-conducting drum 6 during the high-temperature production process, which affects heat loss.

[0035] In an embodiment of the present application, the electromagnetic induction converter further includes an air isolation guide cover 5. The air isolation guide cover 5 is installed on the base 1 through a guide cover support, and the air isolation guide cover 5 is rotatably connected to the end of the heat-conducting drum 6. The air isolation guide cover 5 is sleeved outside the heat-conducting drum 6 and does not rotate with the heat-conducting drum 6. The function between the air isolation guide cover 5 and the heat-conducting drum 6 is to prevent air from entering the heat-conducting drum 6 during the reduction production process and reacting with hydrogen.

[0036] In an embodiment of the present application, a gas inlet 9 for introducing a reducing gas is provided on the air isolation guide cover 5. The gas inlet 9 is communicated with the end of the heat-conducting drum 6, and a gas outlet 15 is provided at the front end of the heat-conducting drum 6. The air isolation guide cover 5 is installed at the rear end of the heat-conducting drum 6, and the air isolation guide cover 5 can prevent air from entering the heat-conducting drum 6 and flowing to react with hydrogen. Materials enter the reaction chamber from the feed inlet 12 of the heat-conducting drum 6 and are discharged from the discharge outlet 8 at the rear end of the heat-conducting drum 6 after the reduction reaction ends. During the production process, the reducing gas is pressed into the heat-conducting drum 6 through the gas inlet 9 of the air isolation guide cover 5 to participate in the reduction reaction and reduce the oxide minerals.

[0037] In an embodiment of the present application, the appearance of the electromagnetic induction heating chamber 7 is circular or square. The electromagnetic induction heating chamber 7 can be square or circular, and is configured according to the required reaction temperature and time length for the reduction of different metal oxide materials. For example, when reducing zinc oxide to metallic zinc, metallic zinc vaporizes at around 1000 degrees Celsius, and a square electromagnetic induction chamber is convenient for recycling and cooling to form the product. For example, for the solid-state reaction of metal oxides such as copper oxide and nickel oxide to form elemental metals at temperatures above 1000 degrees Celsius during the oxidation reaction, a circular electromagnetic induction chamber is used.

[0038] In an embodiment of the present application, the heating coil is connected to the frequency conversion control unit. During the reaction process, the frequency conversion control unit outputs current with variable frequency to the electromagnetic induction heating chamber 7. The electromagnetic induction heating chamber 7 generates heat, and the heat is transferred to the heat conduction roller. The heat conduction roller 6 is driven by the motor 4 to rotate. When the heat generated by the electromagnetic heating chamber heats the heat conduction roller 6 to a high temperature above 1000 degrees Celsius, the heat conduction roller rotates continuously. The oxidized ore material enters the heat conduction roller from the preheating front end 2. During the rotation of the heat conduction roller 6, the material in the roller is turned over and moves through the high temperature by flipping. Hydrogen is introduced into the heat conduction roller through the gas inlet 9 of the air isolation diversion hood 5. The hydrogen introduced into the heat conduction roller and the high-temperature oxidized metal material undergo a reduction reaction to generate elemental metal, which is continuously discharged from the discharge port 8 below the air isolation diversion hood 5.

[0039] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. An electromagnetic induction converter, characterized in that, It includes an electromagnetic induction heating chamber (7), a heat-conducting roller (6), and a driving device, where: A heating coil (16) is arranged on the outer surface of the electromagnetic induction heating chamber (7) for heating the heat-conducting roller (6), and a receiving cavity for accommodating the heat-conducting roller (6) is provided inside the electromagnetic induction heating chamber (7); The heat-conducting roller (6) is arranged in the receiving cavity. A reaction chamber for the reaction of metal oxides is provided inside the heat-conducting roller (6). The heat-conducting roller (6) is connected to the driving device for rotating relative to the electromagnetic induction heating chamber (7); the heat-conducting roller (6) is connected to a reducing gas for enabling a redox reaction to occur in the reaction chamber; The driving device is connected to the heat-conducting roller (6) for driving the heat-conducting roller (6) to rotate.

2. The electromagnetic induction converter according to claim 1, wherein, The heat-conducting roller (6) includes a preheating front end (2), and a feed inlet (12) is provided at the preheating front end (2). An outlet (8) is provided at the end of the heat-conducting roller (6).

3. The electromagnetic induction converter according to claim 1, wherein The driving device includes a motor (4), a first transmission gear (3), and a second transmission gear provided on the heat-conducting roller (6). The first transmission gear (3) and the second transmission gear are engaged. By driving the first transmission gear (3) to rotate through the motor (4), the second transmission gear and the heat-conducting roller (6) are driven to rotate.

4. The electromagnetic induction converter according to claim 3, wherein, The driving device further includes a rotary support wheel (11) and a support wheel track hoop (10). The rotary support wheel (11) is installed on a support frame (14), and the support wheel track hoop (10) is provided on the heat-conducting roller (6). When the heat-conducting roller (6) rotates, the support wheel track hoop (10) rotates on the rotary support wheel (11).

5. The electromagnetic induction converter according to claim 4, characterized in that, The rotary support wheel (11) and the support wheel track hoop (10) are provided at the front and rear ends of the heat-conducting roller (6) relative to the electromagnetic induction heating chamber (7).

6. The electromagnetic induction converter according to claim 1, wherein A sealing ring (13) for preventing heat dissipation is provided at the connection between the electromagnetic induction heating chamber (7) and the heat-conducting roller (6).

7. The electromagnetic induction converter according to claim 1, characterized in that, The electromagnetic induction converter further includes an air-insulating diversion cover (5). The air-insulating diversion cover (5) is installed on a base (1) through a diversion cover support, and the air-insulating diversion cover (5) is rotatably connected to the end of the heat-conducting roller (6).

8. The electromagnetic induction converter according to claim 7, characterized in that, A gas inlet (9) for introducing a reducing gas is provided on the air-insulating diversion cover (5). The gas inlet (9) is communicated with the end of the heat-conducting roller (6), and a gas outlet (15) is provided at the front end of the heat-conducting roller (6).

9. The electromagnetic induction converter according to claim 1, characterized in that, The appearance of the electromagnetic induction heating chamber (7) is circular or square.

10. The electromagnetic induction converter according to claim 1, characterized in that, The heating coil is connected to a frequency conversion control unit.

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