CN214655174U - Device for producing high-grade metal arsenic - Google Patents
Device for producing high-grade metal arsenic Download PDFInfo
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- CN214655174U CN214655174U CN202120637719.1U CN202120637719U CN214655174U CN 214655174 U CN214655174 U CN 214655174U CN 202120637719 U CN202120637719 U CN 202120637719U CN 214655174 U CN214655174 U CN 214655174U
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Abstract
A device for producing high-grade metal arsenic comprises a heating furnace, a volatilization pot (2) arranged in the heating furnace, a conical crystallization cover (3) covered on the top of the heating furnace, and a tail gas pipe (4) connected with the top end of the crystallization cover; the heating furnace is internally provided with a material heating volatilization zone, a heat preservation rectification zone and a reduction zone from bottom to top in sequence, wherein a high-temperature electric heating jacket (11), a medium-temperature electric heating jacket (10) and a low-temperature electric heating jacket (8) are respectively arranged between the volatilization pot and the refractory material layer in the material heating volatilization zone, the heat preservation rectification zone and the reduction zone; three layers of sieve plates (9) are arranged in the middle of the volatilization tank, and charcoal (7) is placed on the sieve plate at the topmost layer; a group of stainless steel crystal plates (6) which are arranged at intervals vertically hang on the upper part of the conical crystal cover. The utility model discloses can prepare and obtain high-grade metal arsenic, and can reduce workman intensity of labour, environmental pollution is little, the productivity is high.
Description
Technical Field
The utility model relates to a non ferrous metal smelting purification technical field, concretely relates to device of preparation high-grade metal arsenic.
Background
The high-grade metal arsenic can be used as an alloy additive to produce lead shot, printing alloy, brass (for condensers), storage battery grid plates, wear-resistant alloy, high-strength structural steel, corrosion-resistant steel and the like. Dezincification can be prevented when brass contains a trace amount of arsenic. Therefore, the high-grade metallic arsenic is a main raw material for preparing arsenic-copper alloy, arsenic-lead alloy, zinc arsenide and high-purity arsenic, and the chemical element content standard of the high-grade metallic arsenic is as follows: arsenic is more than 99.5%, tin is less than 0.001%, antimony is less than 0.01%, copper is less than 0.001%, iron is less than 0.001%, zinc is less than 0.001%, bismuth is less than 0.001%, lead is less than 0.001%, and nickel is less than 0.001%. At present, most domestic metal arsenic is produced by using high-arsenic materials generated in a smelting process as raw materials (68-73% of arsenic, 0.2-1% of antimony, 0.1-0.5% of copper, 0.1-0.5% of iron, 0.1-0.5% of zinc, 0.1-1% of bismuth, 0.5-5% of lead and 0.1-0.5% of nickel), pretreating the raw materials by using an electric furnace to obtain arsenic trioxide, and then reducing the arsenic trioxide by using charcoal to prepare the metal arsenic. The industrial metal arsenic produced by the method has low grade due to relatively complex components of raw materials, particularly antimony element with the property close to that of arsenic is difficult to reduce, the content of antimony is usually 0.2-1%, the requirement of high-end production markets is difficult to meet, the sale price is relatively low, and the production raw materials and the product arsenic are treated by a multi-stage process to cause operation environment pollution and occupational health hazard to operators. Therefore, various manufacturers research and develop equipment for producing high-grade metal arsenic so as to improve the market competitiveness of industrial metal arsenic.
Disclosure of Invention
The utility model aims at solving the problems existing in the prior art, and providing a device which can produce high-grade metal arsenic, reduce the labor intensity of workers, and has small environmental pollution and high yield.
The utility model discloses an mesh realizes through following technical scheme:
a device for producing high-grade metal arsenic comprises a heating furnace, a volatilization tank arranged in the heating furnace, a conical crystallization cover covering the top of the heating furnace, and an exhaust pipe connected to the top end of the conical crystallization cover; the heating furnace comprises a metal shell and a refractory material layer built on the inner wall of the metal shell, a material heating volatilization region, a heat preservation rectification region and a reduction region are sequentially arranged in the heating furnace from bottom to top, and a high-temperature electric heating sleeve, a medium-temperature electric heating sleeve and a low-temperature electric heating sleeve are respectively arranged between the volatilization tank and the refractory material layer in the material heating volatilization region, the heat preservation rectification region and the reduction region; three layers of sieve plates for rectification are arranged in the middle of the volatilization tank at intervals, and charcoal for reduction is placed on the sieve plate at the topmost layer; a group of stainless steel crystal plates which are arranged at intervals are vertically hung on the upper part of the conical crystal cover.
Furthermore, the three layers of sieve plates for rectification are respectively positioned at the bottom and the middle of the medium-temperature electric heating jacket and at the bottom of the low-temperature electric heating jacket in the volatilization tank.
Further, the stainless steel bonding wafer is a wavy sheet.
Furthermore, a circle of U-shaped groove of the volatilization tank is welded on the periphery of the tank body of the volatilization tank on the top surfaces of the volatilization tank and the heating furnace, and the bottom ring of the conical crystallization cover is inserted in the U-shaped groove of the volatilization tank and sealed by water glass.
Furthermore, a circle of U-shaped groove of the crystallization cover is welded at the top end of the conical crystallization cover, and the tail gas pipe is inserted into the U-shaped groove of the crystallization cover and sealed by water glass.
The utility model has the advantages of it is following:
(1) the utility model discloses the device makes the whole production process of arsenic all go on in airtight environment, has realized clean, environmental protection, the high-efficient production of arsenic, can effectively avoid the workman health to receive the injury of noxious material, reduces workman's intensity of labour.
(2) The production device has simple and reliable structure, short and high-efficiency production flow, small equipment investment and low production cost.
(3) The requirement on raw materials is low, high-quality metal arsenic can be directly produced by smelting high-arsenic materials, and the direct yield of the product is high and can reach more than 99%.
The utility model discloses combine market demand and the characteristics of the high arsenic material raw materials that contain of smelting flow production, successfully realized the production of high-grade metal arsenic to reduced the pollution to the environment and to workman's occupational hazard by a wide margin, reduced workman intensity of labour, had very important meaning to the improvement of the market competition and the industrial technology development of high-grade metal arsenic product.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Detailed Description
The contents of the present invention will be further explained with reference to the drawings and examples of the specification.
The device for producing high-grade metal arsenic shown in figure 1 comprises a heating furnace, a volatilization pot 2 arranged in the heating furnace, a conical crystallization cover 3 covered on the top of the heating furnace, and an exhaust pipe 4 connected with the top end of the conical crystallization cover. The conical crystallization cover 3 is mainly used for condensing, crystallizing and collecting arsenic steam, and the tail gas pipe 4 is used for leading tail gas into a tail gas treatment system.
The heating furnace comprises a metal shell 1 and a refractory material layer 12 built on the inner wall of the metal shell, and the building method of the refractory material layer is the same as that of the refractory material layer on the inner wall of the existing smelting furnace. The heating furnace is internally provided with a material heating volatilization area, a heat preservation rectification area and a reduction area from bottom to top in sequence, wherein the material heating volatilization area, the heat preservation rectification area and the reduction area are respectively provided with a high-temperature electric heating jacket 11, a medium-temperature electric heating jacket 10 and a low-temperature electric heating jacket 8 between a volatilization tank and a refractory material layer, the high-temperature electric heating jacket 11, the medium-temperature electric heating jacket 10 and the low-temperature electric heating jacket 8 are all electrically connected with an electric heating control system, and the electric heating control system respectively controls the electrification, heating temperature rise and power failure of the high-temperature electric heating jacket, the medium-temperature electric heating jacket and the low-temperature electric heating jacket. The electrical heating control system is a prior art system and is not shown in fig. 1. Three layers of sieve plates 9 for rectification are arranged at the middle part of the volatilization tank 2 at intervals, and generally, the three layers of sieve plates are arranged at the bottom position and the middle position of the volatilization tank respectively at the middle temperature electric heating sleeve 10 and the bottom position of the low temperature electric heating sleeve 8. Charcoal 7 for reduction is placed on the topmost screen plate.
A group of stainless steel crystal plates 6 which are arranged at intervals vertically hang on the upper part of the conical crystal cover. The stainless steel crystal plate adopts a wave-shaped sheet, so that condensation and crystallization of arsenic vapor are facilitated. The way of hanging the stainless steel crystal is generally to arrange a circle of hanging points 5 on the upper opening and the upper inner wall of the conical crystal cover so as to hang the top end of the stainless steel crystal plate on the hanging points. Other means for facilitating the hanging of the stainless steel bond wafer may also be employed.
And a circle of volatilization tank U-shaped groove 13 is welded on the periphery of the volatilization tank body on the top surfaces of the volatilization tank 2 and the heating furnace, and the bottom ring of the conical crystallization cover 3 is inserted in the volatilization tank U-shaped groove and sealed by water glass. A circle of U-shaped groove 14 for the crystallization cover is welded at the top end of the conical crystallization cover 3, and the tail gas pipe 4 is inserted into the U-shaped groove for the crystallization cover and sealed by water glass. The whole production process of arsenic is carried out in a closed environment, and clean, environment-friendly and efficient production of arsenic is realized.
The method for producing high-grade metal arsenic by using the device of the utility model comprises the following steps:
s1, selecting a high-arsenic material obtained by nonferrous smelting as a raw material, wherein the smelted high-arsenic material contains 68-73% of arsenic, 0.2-1% of antimony, 0.1-0.5% of copper, 0.1-0.5% of iron, 0.1-0.5% of zinc, 0.1-1% of bismuth, 0.5-5% of lead and 0.1-0.5% of nickel by mass;
s2, firstly, placing the smelted high-arsenic-content material in the lower section of the volatilization tank 2, which is positioned in a material heating and volatilizing area, then sequentially arranging three layers of sieve plates 9 in the middle of the volatilization tank at intervals, and placing charcoal 7 on the sieve plate at the topmost layer; then placing the prepared volatilization pot in a heating furnace;
s3, hanging stainless steel crystal plates 6 at the upper end of a conical crystal cover 3 at intervals, inserting the conical crystal cover into a U-shaped groove 13 of a volatilization tank, sealing the conical crystal cover with water glass, and inserting an exhaust pipe 4 into a U-shaped groove 14 of the crystal cover, and sealing the exhaust pipe with the water glass;
s4, electrifying the medium-temperature electric heating sleeve 10 and the low-temperature electric heating sleeve 8 through an electric heating control system, slowly heating the reduction region and the heat-preservation rectifying region of the heating furnace to raise the temperature, enabling the temperature of the reduction region to reach 500-530 ℃ and the temperature of the heat-preservation rectifying region to reach 400-450 ℃ within 150-180 minutes, keeping the constant temperature for at least 10 hours, and then powering off;
and S5, when the reduction zone and the heat preservation rectification zone are heated to reach the set temperature, the high-temperature electric heating sleeve 11 is electrified through the electric heating control system, the material heating volatilization zone is slowly heated to be heated, the temperature of the material heating volatilization zone reaches 350-400 ℃ within 90-120 ℃ of minutes, the constant temperature is kept for at least 8 hours, then the power is cut off, and the material is naturally cooled. In the process of heating and temperature rising in the material heating and volatilizing area and keeping constant temperature, the smelting high-arsenic material is heated to generate arsenic trioxide steam, tin, antimony, copper, iron, zinc, bismuth, lead and nickel contained in the smelting high-arsenic material are also heated and volatilized, the sieve plate 9 enables the tin, antimony, copper, iron, zinc, bismuth, lead and nickel with high boiling point and high melting point to be condensed layer by layer and not volatilized any more, simultaneously the arsenic trioxide steam is dispersed, buffered and decelerated, continuously and slowly rises and passes through charcoal to be reduced into the arsenic steam,
s6, the arsenic vapor continuously rises into the conical crystallization cover, and is condensed and crystallized on the stainless steel crystallization wafer 6 to obtain high-grade metal arsenic which is collected. The obtained high-quality metal arsenic contains arsenic (more than 99.5 wt.%), Sn (less than 0.001 wt.%), Sb (less than 0.01 wt.%), Cu (less than 0.001 wt.%) and Fe (less than 0.001 wt.%)
Less than 0.001%, and less than 0.001%, with the product yield reaching 99%.
Claims (7)
1. The device for producing high-grade metal arsenic is characterized by comprising a heating furnace, a volatilization pot (2) arranged in the heating furnace, a conical crystallization cover (3) covered on the top of the heating furnace, and a tail gas pipe (4) connected to the top end of the conical crystallization cover; the heating furnace comprises a metal shell (1) and a refractory material layer (12) built on the inner wall of the metal shell, a material heating volatilization region, a heat preservation rectification region and a reduction region are sequentially arranged in the heating furnace from bottom to top, and a high-temperature electric heating jacket (11), a medium-temperature electric heating jacket (10) and a low-temperature electric heating jacket (8) are respectively arranged between the material heating volatilization region, the heat preservation rectification region and the reduction region and between the volatilization pot and the refractory material layer; three layers of sieve plates (9) for rectification are arranged at the middle part of the volatilization pot (2) at intervals, and charcoal (7) for reduction is placed on the sieve plate at the topmost layer; a group of stainless steel crystal plates (6) which are arranged at intervals vertically hang on the upper part of the conical crystal cover.
2. An apparatus for producing high grade metallic arsenic according to claim 1, wherein the three screen plates (9) for rectification are respectively located at the bottom and middle positions of the medium temperature electric heating jacket (10) and the bottom position of the low temperature electric heating jacket (8) at the volatilization pot (2).
3. An apparatus for producing high grade metallic arsenic according to claim 1 or 2, wherein the stainless steel bonding wafer (6) is a corrugated sheet.
4. The device for producing high-grade metallic arsenic according to claim 1 or 2, wherein a circle of volatilization pot U-shaped groove (13) is welded on the periphery of the tank body of the volatilization pot on the top surfaces of the volatilization pot (2) and the heating furnace, and the bottom ring of the conical crystallization cover (3) is inserted into the volatilization pot U-shaped groove and sealed by water glass.
5. The device for producing high-grade metallic arsenic according to claim 1 or 2, wherein a circle of U-shaped crystallization cover groove (14) is welded at the top end of the conical crystallization cover (3), and the tail gas pipe (4) is inserted into the U-shaped crystallization cover groove and sealed by water glass.
6. The device for producing high-grade metallic arsenic according to claim 3, wherein a circle of volatilization pot U-shaped groove (13) is welded on the periphery of the tank body of the volatilization pot on the top surfaces of the volatilization pot (2) and the heating furnace, and the bottom ring of the conical crystallization cover (3) is inserted into the volatilization pot U-shaped groove and sealed by water glass.
7. The device for producing high-grade metallic arsenic according to claim 3, wherein a circle of U-shaped crystallization cover groove (14) is welded at the top end of the conical crystallization cover (3), and the tail gas pipe (4) is inserted into the U-shaped crystallization cover groove and sealed by water glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120637719.1U CN214655174U (en) | 2021-03-30 | 2021-03-30 | Device for producing high-grade metal arsenic |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120637719.1U CN214655174U (en) | 2021-03-30 | 2021-03-30 | Device for producing high-grade metal arsenic |
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| CN214655174U true CN214655174U (en) | 2021-11-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106263A (en) * | 2021-03-30 | 2021-07-13 | 红河砷业有限责任公司 | Method for producing high-grade metal arsenic |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113106263A (en) * | 2021-03-30 | 2021-07-13 | 红河砷业有限责任公司 | Method for producing high-grade metal arsenic |
| CN113106263B (en) * | 2021-03-30 | 2022-09-09 | 红河砷业有限责任公司 | Method for producing high-grade metal arsenic |
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