Metallic oxide smelting reduction system

Abstract

The utility model discloses a metal oxide smelting reduction system, which relates to the technical field of high-temperature vacuum reduction metal and comprises a reduction furnace, a reduction tank, a feeding unit and a recovery unit, both ends of the reduction furnace and the reduction tank are open, one end of the reduction tank is a feeding port, the other end of the reduction tank is a slag outlet, the reduction tank is arranged in the opening of the reduction furnace, and the recovery unit is arranged in the opening of the reduction furnace. Water jackets left outside the reduction furnace are arranged at two ends of the reduction tank, and the feeding unit and the recycling unit are respectively arranged at a feeding hole and a slag hole end of the reduction tank. The reduction tank is provided with openings at two ends, one end is provided with a feed port, and the other end is provided with a slag outlet; during slag discharging operation, waste slag is pushed out from the feed inlet end to the slag outlet end manually or by using a mechanical device and falls into a slag box below the tank opening; when the resistance is large, the slag can be pushed out layer by layer; and compared with the existing slag drawing operation, the working efficiency is multiplied.

Description

Technical Field

[0001] The utility model relates to the technical field of high-temperature vacuum reduction of metals, in particular to a metal oxide smelting reduction system, which is used for the smelting reduction production of metals including magnesium, calcium, strontium and barium. Background Art

[0002] The reduction furnace is the core equipment for the smelting production of metals such as magnesium, calcium, strontium, and barium. Its production principle is to reduce the metal oxides to metals under high temperature and high vacuum conditions by heating metal oxides and reducing agents to cause chemical reactions. Most reduction furnaces are horizontal tank reduction furnaces. Existing reduction tanks are generally single-mouth reduction tanks with one end closed and the other end open. The feeding, condensation reduction, removal of reduced metals, and slag discharge operations of this structure's reduction furnace are all carried out at one open end. Only one cooling water jacket is provided, and the reduction efficiency is low. The dust removal unit is far from the opening, and the dust removal efficiency is low and the effect is poor, causing environmental pollution in the factory. In the slag discharge link, workers use slag discharge tools to take out the high-temperature reduced slag from the reduction tank in batches at a close distance. High-temperature dust and waste slag can cause harm to the operating workers. Utility Model Content

[0003] In view of the above shortcomings and deficiencies, the utility model provides a metal oxide smelting reduction system, in which the reduction furnace is opened at both ends and two condensation water jackets are provided to improve the reduction efficiency. The feeding unit and the slag discharge and dust removal unit are at different outlets to improve the efficiency of metal and waste slag collection.

[0004] In order to achieve the above-mentioned purpose, the main technical scheme adopted by the utility model includes: a reduction furnace, a reduction tank, a feeding unit and a recovery unit. The reduction furnace and the reduction tank are both open at both ends, one end of the reduction tank is a feeding port, and the other end is a slag outlet. The reduction tank is arranged in the opening of the reduction furnace, and water jackets retained outside the reduction furnace are provided at both ends of the reduction tank. The feeding unit and the recovery unit are respectively arranged at the feeding port and the slag outlet end of the reduction tank.

[0005] The reduction tank comprises a tank body, a water jacket, a tank cover and a crystallization cylinder. There are two crystallization cylinders and two water jackets. The water jacket is welded on the tank body at the feed port and the slag outlet of the reduction tank. The crystallization cylinder is arranged inside the water jacket. The tank cover can be detachably installed on the water jacket. Rubber sealing rings are arranged inside the water jacket and the tank cover.

[0006] The crystallization cylinder is a cylinder with an open end, and the diameter of the open end of the crystallization cylinder is larger than the diameter of the bottom end.

[0007] The water jacket is provided with a circulating water pipeline.

[0008] The feeding unit comprises a material box and a track beam, wherein the track beam is arranged above the feeding port of the reduction tank, the material box is slidably connected to the track beam, and a feeding device is arranged between the material box and the feeding port.

[0009] The recovery unit comprises a waste slag box and a dust removal device, wherein the dust collecting cover of the dust removal device is arranged just above the slag outlet of the reduction tank, and the waste slag box is arranged just below the slag outlet of the reduction tank.

[0010] The reduction tank is provided with a vacuum pipeline for evacuating a vacuum, and a regulating valve is provided on the vacuum pipeline; the reduction furnace is provided with a supporting column for supporting the reduction tank.

[0011] The reduction tank can be placed horizontally in a horizontal reduction furnace, or can be placed vertically in a vertical reduction furnace.

[0012] The utility model has the following beneficial effects and advantages:

[0013] 1. The reduction tank of the metal oxide smelting reduction system of the utility model has openings at both ends, one end is set as the feed port, and the other end is set as the slag outlet; during the slag discharge operation, the waste slag is pushed out from the feed port to the slag outlet manually or by mechanical means, and falls into the slag box below the tank mouth; when the resistance is large, the slag can be pushed out in layers; compared with the current slag removal operation, the work efficiency will be doubled;

[0014] 2. Since the dust removal unit is placed close to the slag outlet, the dust and hot air generated during slag discharge can be completely collected by the dust removal unit, which improves the dust removal efficiency and purifies the environment in front of the reduction furnace and in the plant;

[0015] 3. A double set of condensing water jackets and crystallization cylinders are set up. The metal vapor generated by the reaction in the tank can be fully collected by the crystallization cylinders at both ends at the same time. Compared with the case of only setting one crystallization cylinder, the output of crystallized metal can be significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the metal oxide smelting reduction system of the utility model;

[0017] Figure 2 The utility model is a schematic diagram of the structure of a reduction tank of a metal oxide smelting reduction system.

[0018] In the figure: 1. reduction furnace; 2. material; 3. reduction tank; 4. water jacket; 5. crystallization cylinder; 6. waste slag box; 7. dust hood; 8. vacuum pipeline; 9. circulating water pipeline; 10. track beam; 11. material box; 12. tank cover. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings of the specification. Figure 1As shown, the utility model is a metal oxide smelting reduction system, characterized in that it comprises a reduction furnace 1, a reduction tank 3, a feeding unit and a recovery unit, wherein both ends of the reduction furnace 1 and the reduction tank 3 are open, one end of the reduction tank 3 is a feeding port, and the other end is a slag outlet, the reduction tank 3 is arranged in the opening of the reduction furnace 1, and both ends of the reduction tank 3 are provided with water jackets 4 retained outside the reduction furnace 1, and the feeding unit and the recovery unit are respectively arranged at the feeding port and the slag outlet end of the reduction tank.

[0020] The reduction tank 3 includes a tank body, a water jacket 4, a tank cover 12 and a crystallization cylinder 5. The water jackets 4 are two and are respectively welded on the tank body of the reduction tank 3 at the feed port and the slag outlet. The crystallization cylinders 5 are two and are respectively placed inside the water jacket 4. The tank cover 12 is detachably installed on the water jacket 4. Rubber sealing rings are provided in the water jacket 4 and the tank cover 12. The crystallization cylinder 5 is a cylinder with one end open, and the diameter of the open end of the crystallization cylinder is larger than the top diameter.

[0021] The water jacket 4 is provided with a circulating water pipeline 9. Specifically, after the reduction tank 3 is loaded, a crystallization cylinder 5 is placed in the water jacket 4 at the feed port and the slag outlet. The metal vapor generated by the reaction in the tank can be fully collected by the crystallization cylinders 5 at both ends at the same time; compared with the case where only one crystallization cylinder is set, the output of crystallized metal can be significantly improved.

[0022] The feeding unit comprises a material box 11 and a track beam 10. The track beam 10 is arranged above the feeding port of the reduction tank 3. The material box 11 is slidably connected to the track beam 10. A feeding device is arranged between the material box 11 and the feeding port.

[0023] The recycling unit includes a waste slag box 6 and a dust removal device, wherein a dust collecting hood 7 of the dust removal device is arranged just above the slag outlet of the reduction tank 3, and the waste slag box 6 is arranged just below the slag outlet of the reduction tank 3. The dust collecting hood 7 can be placed close to the slag outlet, and the dust and hot air generated during slag discharge can be completely collected by the dust collecting hood 7 and sucked into the dust collector, thereby purifying the environment in front of the reduction furnace and in the workshop.

[0024] When loading and discharging slag, workers only need to operate at the loading port of the horizontal tank reduction furnace 1, without having to go to the slag discharge port. They will not be exposed to high-temperature reduced slag and dust, and are away from high-temperature danger sources, thus ensuring the safety of operators in front of the furnace. The reduced slag that falls into the waste slag box can be transported away by a forklift or a ground rail car.

[0025] The reduction tank 3 is provided with a vacuum pipeline 8 for evacuating a vacuum, and the vacuum pipeline 8 is provided with a regulating valve; the reduction furnace 1 is provided with a supporting column for supporting the reduction tank 3 .

[0026] During the slag discharge operation, workers use slag discharge tools to push the waste slag from the feed port to the slag discharge port, and the waste slag falls into the waste slag box 6 below the tank mouth; when the resistance is large, the slag can be pushed out in layers; compared with the current slag removal operation, the work efficiency will be doubled. If mechanical devices are used instead of manual labor, the slag discharge tools will be moved back and forth in the tank, and the slag discharge speed will be faster and the effect will be better.

[0027] When the reduction furnace 1 is in production, the material pellets 2 are loaded into the reduction tank 3 through the feed port, the tank cover 12 is closed, and then vacuuming is started through the vacuum pipeline 8 to heat the reduction furnace 1 to the reaction temperature. The tank body is heated to make the internal materials react, and circulating water is introduced into the two water jackets 4 through the circulating water pipeline 9 to reduce the temperature of the internal space of the water jacket 4. First, the rubber sealing ring between the tank mouth and the tank cover 12 is protected to ensure that the vacuum degree in the tank body is less than 10Pa; second, the metal vapor generated by the reaction is cooled and crystallized in the crystallization tube 5 at the end of the water jacket; after a reaction cycle, the tank covers 12 at both ends are opened, the crystallization tube 5 is taken out, and the high-temperature reduction slag is cleaned out at the slag outlet end to complete an operation cycle.

[0028] The utility model is also applicable to a vertical tank reduction furnace in which the reduction tank is placed vertically. Figure 2 .

Claims

1. A metal oxide smelting reduction system, characterized in that: include: A reduction furnace, a reduction tank, a feeding unit and a recovery unit, wherein both the reduction furnace and the reduction tank are open at both ends, one end of the reduction tank is a feeding port, and the other end is a slag outlet, the reduction tank is arranged in the opening of the reduction furnace, and both ends of the reduction tank are provided with water jackets retained outside the reduction furnace, and the feeding unit and the recovery unit are respectively arranged at the feeding port and the slag outlet of the reduction tank.

2. A metal oxide smelting reduction system according to claim 1, characterized in that: The reduction tank comprises a tank body, a water jacket, a tank cover and a crystallization cylinder. There are two crystallization cylinders and two water jackets. The water jacket is welded on the tank body at the feed port and the slag outlet of the reduction tank. The crystallization cylinder is arranged inside the water jacket. The tank cover can be detachably installed on the water jacket. Rubber sealing rings are arranged inside the water jacket and the tank cover.

3. A metal oxide smelting reduction system according to claim 2, characterized in that: The crystallization cylinder is a cylinder with an open end, and the diameter of the open end of the crystallization cylinder is larger than the diameter of the bottom end.

4. A metal oxide smelting reduction system according to claim 2, characterized in that: The water jacket is provided with a circulating water pipeline.

5. A metal oxide smelting reduction system according to claim 1, characterized in that: The feeding unit comprises a material box and a track beam, wherein the track beam is arranged above the feeding port of the reduction tank, the material box is slidably connected to the track beam, and a feeding device is arranged between the material box and the feeding port.

6. A metal oxide smelting reduction system according to claim 1, characterized in that: The recovery unit comprises a waste slag box and a dust removal device, wherein the dust collecting cover of the dust removal device is arranged just above the slag outlet of the reduction tank, and the waste slag box is arranged just below the slag outlet of the reduction tank.

7. A metal oxide smelting reduction system according to claim 1, characterized in that: The reduction tank is provided with a vacuum pipeline for evacuating a vacuum, and a regulating valve is provided on the vacuum pipeline; the reduction furnace is provided with a supporting column for supporting the reduction tank.

8. The metal oxide smelting reduction system according to claim 1, characterized in that: The reduction tank can be placed horizontally in a horizontal reduction furnace, or can be placed vertically in a vertical reduction furnace.

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