Vertical bidirectional crystallization reduction equipment for smelting

Abstract

The utility model discloses vertical bidirectional crystallization reduction equipment for smelting, which relates to the technical field of magnesium metal, and comprises a furnace body and a high-temperature hearth, the high-temperature hearth is formed in the furnace body, a high-temperature reaction kettle is arranged in the furnace body, the high-temperature reaction kettle is formed by welding an upper water jacket, a lower water jacket, a transition cone and a reduction outer tank, an inner tank is arranged in the reduction outer tank, raw materials are arranged between the reduction outer tank and the inner tank, an upper vacuum pipe is mounted on the outer side of the upper water jacket, an upper end tank cover is arranged at the top of the upper water jacket, an upper crystallization plate is mounted at the bottom of the upper end tank cover, and the upper end tank cover and the upper crystallization plate are arranged into a whole. The lower vacuum pipe is installed on the outer side of the lower water jacket, the lower end tank cover is arranged at the bottom of the lower water jacket, and the phenomenon that the crystallized magnesium is burnt out during operation is avoided by adopting simultaneous crystallization of the upper portion and the lower portion.

Description

Technical Field

[0001] The utility model relates to the technical field of metal magnesium, in particular to vertical bidirectional crystallization reduction equipment for smelting. Background Art

[0002] In the current magnesium metal industry's thermal processes, vertical reduction furnaces employ either "upper crystallization, lower slag discharge" or "lower crystallization, lower slag discharge" methods. Both methods suffer from the phenomenon of magnesium vapor crystallizing in abnormal locations, making it difficult to remove the abnormally crystallized magnesium and prone to burnout. Crystallization is also slow, affecting the reduction reaction rate. Utility Model Content

[0003] The purpose of this utility model is to provide a vertical bidirectional crystallization and reduction equipment for smelting. This solves the problem that the existing vertical reduction furnaces adopt the "upper crystallization, lower slag discharge" or "lower crystallization, lower slag discharge" methods. Both methods have the problem of magnesium vapor crystallizing in abnormal locations, making it difficult to remove the abnormally crystallized magnesium and prone to burning. In addition, the crystallization speed is slow, which affects the reduction reaction rate.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a vertical two-way crystallization reduction equipment for smelting, comprising a furnace body and a high-temperature furnace, wherein the high-temperature furnace is formed inside the furnace body, a high-temperature reactor is arranged inside the furnace body, and the high-temperature reactor is welded by an upper water jacket, a lower water jacket, a transition cone and a reduction outer tank, an inner tank is arranged inside the reduction outer tank, raw materials are arranged between the reduction outer tank and the inner tank, an upper vacuum tube is installed on the outer side of the upper water jacket, an upper tank cover is arranged on the top of the upper water jacket, and an upper tank cover is installed on the bottom of the upper tank cover. The crystallization plate, the upper tank cover and the upper crystallization plate are arranged as a whole, which is convenient to operate and has a fast heat conduction speed of the crystallized magnesium. A lower vacuum tube is installed on the outside of the lower water jacket, and a lower tank cover is provided at the bottom of the lower water jacket. A lower crystallization barrel is provided on the top of the lower tank cover, and an air guide ring is provided on the top of the lower crystallization barrel. The addition of the air guide ring can realize the organized crystallization of magnesium vapor and can achieve the ash blocking effect at the same time. A potassium-sodium trap is provided on the lower tank cover. The addition of the potassium-sodium trap can prevent the heat of the crystallized magnesium from being conducted to the lower tank cover of the lower end cover plate, thereby avoiding burning of the sealing gasket.

[0005] Preferably, the upper water jacket is arranged at the top of the reduction outer tank, the lower water jacket is arranged at the bottom of the reduction outer tank, and the transition cone is arranged between the lower water jacket and the reduction outer tank. The function of the transition cone is integrated: the weight support of the reactor and the function of the magnesium vapor guide pipe are integrated into the transition cone structure.

[0006] Preferably, a first sealing gasket is installed at the bottom of the upper tank cover, and the first sealing gasket is in contact with the water jacket.

[0007] Preferably, a circulating water inlet and a circulating water outlet are respectively formed at both ends of the top of the upper crystallization plate, a circulating water cavity is formed inside the upper crystallization plate, and a crystallization magnesium anti-dropping part is provided on the upper crystallization plate.

[0008] Preferably, a second sealing gasket is installed on the top of the lower tank cover, and the second sealing gasket is in contact with the water jacket.

[0009] Preferably, a flow guide tube is provided on the transition cone, and the flow guide tube is provided on the inner side of the air guide ring.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] 1. This application adopts simultaneous crystallization of the upper and lower parts to avoid the burning of crystallized magnesium during operation.

[0012] 2. This application adopts simultaneous crystallization from top to bottom, shortening the magnesium vapor travel, accelerating the crystallization speed, and facilitating the rapid reaction of raw materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the overall structure of a vertical bidirectional crystallization reduction equipment for smelting in the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the air guide ring of a vertical bidirectional crystallization reduction equipment for smelting in the utility model;

[0015] Figure 3 This is a schematic diagram of the transition cone structure of a vertical bidirectional crystallization reduction equipment for smelting in the utility model;

[0016] Figure 4 This is a schematic diagram of the integrated structure of the upper tank cover of a vertical bidirectional crystallization reduction equipment for smelting in the utility model;

[0017] Figure 5 The utility model is a schematic diagram of the integrated structure of the lower end cover of a vertical bidirectional crystallization reduction equipment for smelting.

[0018] Numbers in the figure: 100, furnace body; 101, high-temperature furnace; 1, raw material; 2, reduction outer tank; 3, inner tank; 4, upper water jacket; 5, lower water jacket; 6, transition cone; 7, lower crystallization barrel; 8, air guide ring; 9, lower end tank cover; 10, upper end tank cover; 11, upper vacuum tube; 12, lower vacuum tube; 13, upper crystallization plate; 14, guide tube; 15, potassium-sodium collector; 16, first sealing gasket; 17, second sealing gasket; 18, circulating water inlet; 19, circulating water outlet; 20, circulating water chamber; 21, crystallized magnesium anti-dropping part. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example: Figure 1 - Figure 5 As shown, the utility model provides a technical solution of a vertical bidirectional crystallization reduction equipment for smelting, including a furnace body 100 and a high-temperature furnace 101. The high-temperature furnace 101 is formed inside the furnace body 100. A high-temperature reactor is arranged inside the furnace body 100. The high-temperature reactor is welded by an upper water jacket 4, a lower water jacket 5, a transition cone 6 and a reduction outer tank 2. The upper water jacket 4 is arranged at the top of the reduction outer tank 2, the lower water jacket 5 is arranged at the bottom of the reduction outer tank 2, the transition cone 6 is arranged between the lower water jacket 5 and the reduction outer tank 2, an inner tank 3 is arranged inside the reduction outer tank 2, and a raw material 1 is arranged between the reduction outer tank 2 and the inner tank 3. An upper vacuum tube 11 is installed on the outside of the upper water jacket 4, an upper end tank cover 10 is arranged on the top of the upper water jacket 4, and a first sealing gasket 16 is installed at the bottom of the upper end tank cover 10. The first sealing gasket 16 is in contact with the upper water jacket 4, the upper crystallization plate 13 is installed at the bottom of the upper tank cover 10, and the circulating water inlet 18 and the circulating water outlet 19 are respectively formed at both ends of the top of the upper crystallization plate 13. A circulating water cavity 20 is formed inside the upper crystallization plate 13, and a crystallization magnesium anti-falling part 21 is provided on the upper crystallization plate 13. The lower vacuum tube 12 is installed on the outside of the lower water jacket 5, the lower tank cover 9 is provided at the bottom of the lower water jacket 5, and the second sealing gasket 17 is installed on the top of the lower tank cover 9. The second sealing gasket 17 is in contact with the lower water jacket 5, the lower crystallization barrel 7 is provided on the top of the lower crystallization barrel 7, and the top of the lower crystallization barrel 7 is provided with an air guide ring 8. The transition cone 6 is provided with a guide pipe 14, and the guide pipe 14 is provided on the inner side of the air guide ring 8. The lower tank cover 9 is provided with a potassium and sodium collector 15.

[0021] Specifically:

[0022] 1. First, weld the upper water jacket 4, the lower water jacket 5, the transition cone 6 and the reduction outer tank 2 to ensure airtightness to form a high-temperature reactor.

[0023] 2. The high-temperature reactor is then hoisted into the high-temperature furnace 101 and the raw material 1 is added between the reduction outer tank 2 and the inner tank 3.

[0024] 3. Place the lower crystallization barrel 7 and the air guide ring 8 on the lower end tank cover 9 to form a stable whole, and push it into the water jacket 5. The lower end tank cover 9 is an integrated device.

[0025] 4. Continue to place the upper tank cover 10 on the water jacket 4 to complete the sealing of the high-temperature reactor.

[0026] 5. Start pre-vacuuming through the upper vacuum tube 11, and then open the lower vacuum tube 12 after a period of time.

[0027] 6. As the furnace temperature rises and the vacuum reaches the standard, the raw material 1 begins to react, generating a large amount of magnesium vapor. The magnesium vapor will randomly cool and crystallize on the upper crystallization plate 13 and the lower crystallization barrel 7 to form solid magnesium, realizing the high-temperature vacuum reduction process of metallic magnesium.

[0028] 7. After the reaction is completed, close the upper and lower vacuum tubes, support the lower end tank cover 9 in place, lift the upper end tank cover 10 integrated device, remove the upper crystallized magnesium, and use the latch operation.

[0029] 8. Slowly lower the lower tank cover 9 to support it until the lower crystallization barrel 7 is completely lowered to the outside of the lower water jacket 5.

[0030] 9. Aim at the outlet of the water jacket 5, put in the slag bucket, lift the inner tank 3 and discharge the slag.

[0031] 10. Repeat the operation in this way.

[0032] In magnesium smelting and reduction equipment, a synchronous upper and lower crystallization method is employed. This provides the shortest possible travel distance for the magnesium vapor generated by the material reaction, allowing it to move to the low-temperature crystallization zone in the shortest possible time, where it crystallizes and forms solid magnesium. This rapidly reduces the residual pressure on the pellet surface, specifically the magnesium vapor pressure, facilitating rapid pellet reaction and shortening reduction time. Providing ample crystallization area and guaranteed temperature also shortens heating time, further improving production efficiency.

[0033] Therefore, the problems existing in the current vertical tank are solved:

[0034] 1. The position of the crystallized magnesium is abnormal and the burning is serious: the upper crystallization vertical tank has abnormal crystallized magnesium at the lower slag discharge port, and the lower crystallization vertical tank has abnormal crystallized magnesium at the upper feeding port. The upper and lower crystallizations are adopted simultaneously to avoid the burning of the crystallized magnesium during operation.

[0035] 2. The magnesium vapor has a long travel distance and a slow crystallization speed, which inhibits the reaction speed of the raw materials. The use of simultaneous upper and lower crystallization shortens the magnesium vapor travel distance, speeds up the crystallization speed, and is conducive to the rapid reaction of the raw materials.

[0036] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A vertical bidirectional crystallization reduction equipment for smelting, characterized by: The invention comprises a furnace body (100) and a high-temperature furnace (101), wherein the high-temperature furnace (101) is formed inside the furnace body (100), and a high-temperature reactor is arranged inside the furnace body (100), wherein the high-temperature reactor is welded together by an upper water jacket (4), a lower water jacket (5), a transition cone (6) and a reduction outer tank (2), wherein an inner tank (3) is arranged inside the reduction outer tank (2), and a raw material (1) is arranged between the reduction outer tank (2) and the inner tank (3), and a An upper vacuum tube (11), an upper tank cover (10) is provided on the top of the upper water jacket (4), an upper crystallization plate (13) is installed on the bottom of the upper tank cover (10), a lower vacuum tube (12) is installed on the outside of the lower water jacket (5), a lower tank cover (9) is provided on the bottom of the lower water jacket (5), a lower crystallization barrel (7) is provided on the top of the lower tank cover (9), an air guide ring (8) is provided on the top of the lower crystallization barrel (7), and a potassium and sodium collector (15) is provided on the lower tank cover (9).

2. The vertical bidirectional crystallization reduction equipment for smelting according to claim 1, characterized in that: The upper water jacket (4) is arranged at the top of the reduction outer tank (2), the lower water jacket (5) is arranged at the bottom of the reduction outer tank (2), and the transition cone (6) is arranged between the lower water jacket (5) and the reduction outer tank (2).

3. The vertical bidirectional crystallization reduction equipment for smelting according to claim 1, characterized in that: A first sealing gasket (16) is installed at the bottom of the upper tank cover (10), and the first sealing gasket (16) is in contact with the water upper jacket (4).

4. The vertical bidirectional crystallization reduction equipment for smelting according to claim 1, characterized in that: A circulating water inlet (18) and a circulating water outlet (19) are respectively formed at both ends of the top of the upper crystallization plate (13), a circulating water cavity (20) is formed inside the upper crystallization plate (13), and a crystallized magnesium anti-dropping part (21) is provided on the upper crystallization plate (13).

5. The vertical bidirectional crystallization reduction equipment for smelting according to claim 1, characterized in that: A second sealing gasket (17) is installed on the top of the lower tank cover (9), and the second sealing gasket (17) is in contact with the water jacket (5).

6. The vertical bidirectional crystallization reduction equipment for smelting according to claim 1, characterized in that: A flow guide tube (14) is provided on the transition cone (6), and the flow guide tube (14) is provided inside the air guide ring (8).

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