CN219218110U - Vertical magnesium smelting reduction furnace adopting upper wiring electric heating method - Google Patents
Vertical magnesium smelting reduction furnace adopting upper wiring electric heating method Download PDFInfo
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- CN219218110U CN219218110U CN202223276491.1U CN202223276491U CN219218110U CN 219218110 U CN219218110 U CN 219218110U CN 202223276491 U CN202223276491 U CN 202223276491U CN 219218110 U CN219218110 U CN 219218110U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model relates to an upper wiring electric heating method vertical magnesium smelting reduction furnace, which comprises a furnace shell, a magnesium crystallizer and a heating body, and is characterized in that: the heating body comprises a plurality of heating elements, the furnace shell top is equipped with the upper large cover, and two terminal are established in the upper large cover, and upper portion is equipped with the tray in the furnace shell, and the equipartition has the heating element fixed orifices on the tray, and the heating element passes through the heating element fixed orifices and is fixed with the tray, and the part that is located the tray upper portion is the heating element wiring end, and the part that is located the tray lower part is the heating section of heating element, and the heating element wiring end is connected with two terminal respectively through the binding post that is located the upper large cover. The advantages are that: the device is convenient to overhaul and replace the heating element, and improves the overhaul efficiency. The upper part is fed with the ball material, the lower part is discharged with slag, the hearth is internally provided with a heat insulation layer fire-resistant ramming layer, the heat loss is less, and the heating elements are uniformly distributed in the ball material, so that the smelting time is shortened, the production efficiency is improved, the labor intensity of workers is reduced, and the mechanized operation is facilitated.
Description
Technical Field
The utility model relates to an upper wiring electric heating method vertical magnesium smelting reduction furnace, and belongs to the technical field of magnesium metal smelting equipment.
Background
The method for preparing pure metal magnesium by electrolytic melting of magnesium chloride is invented by a British scientist in 1833, industrial production is started in Germany after 53 years of hard experimental study in 1886, and the method is a main method for producing magnesium in the world after more than 100 years of continuous improvement. However, the electrolytic magnesium production method which emits a large amount of chlorine is increasingly not known in the world under the condition that environmental pollution is generated.
The university of Canadian, most teaches Pidgeon (L.M. Pidgeon) first created and succeeded in a test plant for magnesium production with reduced dolomite of ferrosilicon. Is commonly adopted in all countries of the world in the 50 s. The method has the characteristics of simple furnace type, less investment, good control of the production process and the like, and has very rapid development. The method adopts a heat-resistant steel reaction tank 3C24NiN as an external heating method. The tank is horizontally arranged in the reaction furnace and can be divided into single-row or double-row reaction tanks, or the tank is filled with coal or gas, when the temperature is less than or equal to 1200 ℃, mgO+Si- & gtMg+Si is carried out under vacuum condition 2 Is a substitution reaction of (a). The magnesium vapor produced forms crystalline magnesium in the crystallizer (450-550 ℃). The biggest disadvantage of the Pidgeon process is the high cost and high consumption of the heat resistant steel reactor. Especially, the late stage of the reaction tank is modified, the feeding amount is reduced, the magnesium production rate is reduced, the cost is increased, the energy is wasted, and the CO is wasted 2 Serious discharge, serious dust pollution and severe labor environment, and high cost for manufacturing the reduction tank,the service life is short, and the development of a plurality of magnesium factories is limited.
For this purpose, the applicant has proposed an utility model patent application of an electrothermal magnesium smelting reduction furnace, application number 2012103080687. The application overcomes the defects in the prior art, but the heating temperature of the used heating body is 1100-1200 ℃, and the magnesium smelting efficiency and the receiving rate are affected to a certain extent.
Although the electrothermal magnesium smelting reduction furnace can improve the heating temperature of the heating body, the magnesium efficiency and the magnesium receiving rate are both higher. However, the electrothermal magnesium smelting reduction furnace is a vertical magnesium smelting furnace, two binding posts of a heating element are led out from the bottom of the furnace, if the heating element is burnt out, the two sealed money receiving posts and the heating element in the furnace are difficult to detach, the temperature is higher than 1100 ℃ when the slag is discharged from the bottom of the furnace body during production, the device elements are influenced to a certain extent, and the heating element must be taken out by opening a large cover from the upper part when the damaged heating element is taken out. The maintenance mode of removing the heating element from the lower part and then taking out the damaged heating element from the upper part has the advantages of high removal difficulty, high difficulty in replacing the heating element, low efficiency and high labor intensity of workers.
Disclosure of Invention
The utility model aims to provide the vertical magnesium smelting reduction furnace adopting the upper wiring electric heating method, which is convenient to overhaul and replace heating elements, shortens smelting time, improves production efficiency and lightens labor intensity of workers.
The object of the utility model is achieved by:
the utility model comprises a furnace shell, a magnesium crystallizer and a heating body, and is characterized in that: the heating body comprises a plurality of heating elements, the furnace shell top is equipped with the upper large cover, and two terminal are established in the upper large cover, and upper portion is equipped with the tray in the furnace shell, and the equipartition has the heating element fixed orifices on the tray, and the heating element passes through the heating element fixed orifices and is fixed with the tray, and the part that is located the tray upper portion is the heating element wiring end, and the part that is located the tray lower part is the heating section of heating element, and the heating element wiring end is connected with two terminal respectively through the binding post that is located the upper large cover.
The heating element of the heating element is in a straight bar shape, a U-shaped bar shape or a straight bar shape;
the heating elements are connected in parallel or in series;
the heating element is fixed with the tray by adopting a nut;
two magnesium crystallizers are symmetrically arranged at the left and right of the upper part of the side wall of the furnace shell;
the magnesium crystallizer is horizontally arranged;
a feed inlet is arranged on the upper large cover;
the upper large cover is connected with the furnace shell through a flange plate, and a sealing ring is arranged on the flange plate;
the inner wall of the furnace shell is provided with an integral refractory layer, the refractory layer is made of high-alumina refractory materials by ramming, and anchor nails and stainless steel meshes are arranged in the refractory layer;
the tray is arranged on the refractory material layer;
the heating body is made of a high-temperature-resistant metal rod and a metal plate or made of an iron-chromium-aluminum material;
and supporting feet are arranged on the outer side of the furnace shell.
The utility model has the advantages that: the device is convenient to overhaul and replace the heating element, and improves the overhaul efficiency. Meanwhile, the upper part is fed with the ball material, the lower part is discharged with slag, a heat insulation layer fire-resistant ramming layer is arranged in the hearth, heat loss is little, heating elements are uniformly distributed in the ball material, smelting time is shortened, production efficiency is improved, labor intensity of workers is reduced, and mechanized operation is facilitated.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a top view of the tray;
fig. 3 is a schematic structural view of a straight rod-shaped heating element made of iron-chromium-aluminum material.
In the figure: 1. sealing cover; secondly, a feeding port; thirdly, a large cover is arranged; 4. a flange plate; 5. a seal ring; 6. binding posts; 7. a heating element; 8. a tray; seventhly, a vacuum tube; 10. a magnesium crystallizer; 11. a furnace shell; 12. a refractory layer; 13. magnesium ball material; 14. a slag outlet; 15, supporting legs; 16. a heating element fixing hole; 17. heating element terminals; 18. a cold end of the heating element; 19. and the heating section of the heating element.
Detailed Description
Referring to the drawings, the utility model comprises a furnace shell 11, a magnesium crystallizer 10 and a heating body 7, wherein the heating body consists of a plurality of heating elements, the heating elements of the heating body are in a straight bar shape, a U-shaped bar shape or a straight strip shape, and the heating body is made of a high-temperature resistant metal bar, a metal plate or an iron-chromium-aluminum material; taking a straight rod-shaped heating element as an example, the heating element is formed by sequentially connecting a heating element wiring terminal 17, a heating element cold end 18 and a heating element heating section 19. An upper large cover 3 is arranged at the top of the furnace shell, a refractory material and a lower magnesium ball hole are arranged in the upper large cover, a feed inlet 2 is arranged on the lower magnesium ball hole, a sealing cover 1 is arranged on the feed inlet, two binding posts 6 are arranged in the upper large cover, binding posts correspondingly connected with the two binding posts are arranged on the upper large cover, the upper large cover is connected with the furnace shell through a flange 4, and a sealing ring 5 is arranged on the flange; the inner wall of the furnace shell is provided with an integral refractory layer 12 which is made of high-alumina refractory material by ramming, and the refractory layer is internally provided with anchor nails and a stainless steel net. The upper part in the furnace shell is provided with a tray 8, the tray is arranged on the refractory layer, heating element fixing holes 16 are uniformly distributed on the tray, the heating elements are fixed with the tray through the heating element fixing holes by adopting nuts, the part positioned at the upper part of the tray is a heating element wiring terminal 17, the part positioned at the lower part of the tray is a heating section 19 of the heating element, the cold end of the heating element is positioned in the heating element fixing holes of the tray, the heating elements are connected in parallel or in series, and the heating element wiring terminals are respectively connected with two wiring terminals through corresponding wiring terminals positioned on the upper large cover. Two magnesium crystallizers 10 are symmetrically arranged at the left and right of the upper part of the side wall of the furnace shell, the magnesium crystallizers are horizontally arranged, each magnesium crystallizer consists of a water-cooling jacket, a sealing end cover and a magnesium crystallizer main body arranged in the water-cooling jacket, and a vacuum tube 9 of the magnesium smelting reduction furnace is arranged on the magnesium crystallizer and penetrates through the water-cooling jacket of the magnesium crystallizer to be communicated with the furnace chamber of the furnace shell.
When the electric slag car is applied, the whole furnace body is erected on a two-layer operation platform, the lower part of the furnace body is 2 meters away from the ground, magnesium balls 13 are added into the furnace chamber from a feeding hole, the magnesium balls are distributed between a refractory layer and a heating body in the furnace, the furnace is vacuumized after being sealed, the heating temperature of the heating body is controlled to be 1200-1350 ℃, the temperature of a magnesium crystallizer is controlled to be 450-550 ℃, magnesium steam is crystallized into crude magnesium in the magnesium crystallizer, slag is discharged from a slag hole at the bottom, and an electric slag car is arranged under the operation platform to walk.
When the heating element has a problem, the bolts of the upper large cover are removed completely, the large cover is lifted, and then the 2 binding post connectors are taken out. The tray for supporting the heating element and the heating element are taken out together. And then placing the new heating element and the tray into the furnace body, connecting 2 binding posts, and then placing the furnace body with a large cover for sealing. By the design, the repair efficiency is improved, and the operation is convenient. Meanwhile, the upper part is fed with the ball material, the lower part is discharged with slag, a heat insulation layer fire-resistant ramming layer is arranged in the hearth, heat loss is little, heating elements are uniformly distributed in the ball material, smelting time is shortened, production efficiency is improved, labor intensity of workers is reduced, and mechanized operation is facilitated.
Claims (4)
1. An upper wiring electric heating method vertical magnesium smelting reduction furnace comprises a furnace shell, a magnesium crystallizer and a heating element, and is characterized in that: the heating body comprises a plurality of heating elements, the furnace shell top is equipped with the upper large cover, and two terminal are established in the upper large cover, and upper portion is equipped with the tray in the furnace shell, and the equipartition has the heating element fixed orifices on the tray, and the heating element passes through the heating element fixed orifices and is fixed with the tray, and the part that is located the tray upper portion is the heating element wiring end, and the part that is located the tray lower part is the heating section of heating element, and the heating element wiring end is connected with two terminal respectively through the binding post that is located the upper large cover.
2. The vertical magnesium-smelting reduction furnace by an upper wiring electric heating method according to claim 1, which is characterized in that: the heating element of the heating element is in a straight bar shape, a U-shaped bar shape or a straight bar shape.
3. The vertical magnesium-smelting reduction furnace by an upper wiring electric heating method according to claim 1, which is characterized in that: the heating body is made of a high-temperature resistant metal rod and a metal plate or made of an iron-chromium-aluminum material.
4. The vertical magnesium-smelting reduction furnace by an upper wiring electric heating method according to claim 1, which is characterized in that: the heating elements are connected in parallel or in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223276491.1U CN219218110U (en) | 2022-12-07 | 2022-12-07 | Vertical magnesium smelting reduction furnace adopting upper wiring electric heating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223276491.1U CN219218110U (en) | 2022-12-07 | 2022-12-07 | Vertical magnesium smelting reduction furnace adopting upper wiring electric heating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219218110U true CN219218110U (en) | 2023-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223276491.1U Active CN219218110U (en) | 2022-12-07 | 2022-12-07 | Vertical magnesium smelting reduction furnace adopting upper wiring electric heating method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219218110U (en) |
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2022
- 2022-12-07 CN CN202223276491.1U patent/CN219218110U/en active Active
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