Device and method for treating antimony-arsenic materials

A material and volatile matter technology, applied in the field of antimony and arsenic material processing, can solve the problem of difficult removal of harmful impurity arsenic, and achieve the effect of improving corporate profits, short process flow and short process flow

Active Publication Date: 2015-04-29
LANZHOU ENG & RES INST OF NONFERROUS METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a device for processing antimony-arsenic materials to solve the problem that the harmful impurity arsenic is difficult to remove during the smelting process of antimony-arsenic materials

Method used

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  • Device and method for treating antimony-arsenic materials
  • Device and method for treating antimony-arsenic materials
  • Device and method for treating antimony-arsenic materials

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1. The raw material used is a kind of antimony-arsenic alloy, its main chemical composition is antimony and arsenic, there is a small amount of lead, composition is shown in Table 1, main technical parameters: distillation temperature 950 ℃, holding time 30min, vacuum degree 500Pa.

[0040]

[0041] The specific implementation steps are as follows:

[0042](1) Feeding: Take 300g of the above-mentioned antimony-arsenic alloy material and add it to the graphite crucible in the furnace, cover the furnace cover, and seal the furnace body;

[0043] (2) Vacuuming: Turn on the vacuum pump to evacuate, heat up when the vacuum degree in the furnace reaches 500 Pa, and continue to evacuate;

[0044] (3) Heating up: Turn on the water cooling system, raise the temperature of the furnace body while the vacuum pump is running, so that the temperature in the furnace reaches 950°C, and continue to vacuumize;

[0045] (4) Heat preservation: After the temperature in the fu...

Embodiment 2

[0050] Embodiment 2. The raw materials used are the same as in Example 1, and the main technical parameters are: distillation temperature 900°C, holding time 90min, vacuum degree 300Pa.

[0051] The specific implementation steps are as follows:

[0052] (1) Feeding: Take 300g of the above-mentioned antimony-arsenic alloy material and add it to the graphite crucible in the furnace, cover the furnace cover, and seal the furnace body;

[0053] (2) Vacuuming: Turn on the vacuum pump to evacuate, and when the vacuum in the furnace reaches 300Pa, turn on the heating system and continue to evacuate;

[0054] (3) Heating up: Turn on the water cooling system, raise the temperature of the furnace body while the vacuum pump is running, so that the temperature in the furnace reaches 900°C, and continue to vacuumize;

[0055] (4) Heat preservation: After the temperature in the furnace reaches 900°C, adjust the heating power, keep heat for 60 minutes, and continue to vacuumize;

[0056] ...

Embodiment 3

[0060] Embodiment 3. raw materials used are the same as example one, see table 1. Main technical parameters: Distillation temperature 800°C, holding time 90min, vacuum degree 300Pa.

[0061] The specific implementation steps are as follows:

[0062] (1) Feeding: Take 300g of the above-mentioned antimony-arsenic alloy material and add it to the graphite crucible in the furnace, cover the furnace cover, and seal the furnace body;

[0063] (2) Vacuuming: Turn on the vacuum pump to evacuate, and when the vacuum in the furnace reaches 300 Pa, turn on the heating system and continue to evacuate;

[0064] (3) Heating up: Turn on the water cooling system, raise the temperature of the furnace body while the vacuum pump is running, so that the temperature in the furnace reaches 800°C, and continue to vacuumize;

[0065] (4) Heat preservation: After the temperature in the furnace reaches 800°C, adjust the heating power, keep heat for 90 minutes, and continue to vacuumize;

[0066] (...

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Abstract

The invention discloses a device and a method for treating antimony-arsenic materials. The problem that harmful impurities are difficult to remove in the smelting process of antimony-arsenic materials is solved. The device comprises a furnace body, a furnace lid and a furnace body, wherein a cylindrical refractory layer is arranged in the furnace body, and a graphite crucible is arranged at the center of the refractory layer; a volatile collection tank is arranged at the top of the refractory layer and is positioned outside the top of the graphite crucible, and a gap is reserved between the graphite crucible and the volatile collection tank; the bottom of the refractory layer is connected with a vacuum pump through a vacuum pump pipe, and a heating system is arranged between the graphite crucible and the refractory layer. The method for treating the antimony-arsenic materials comprises the steps of feeding, vacuumizing, heating, heat insulating, cooling and discharging. Based on the principle of vacuum metallurgy, arsenic and antimony in the antimony-arsenic material are effectively separated, the treatment process is clean and efficient, and no waste water and waste residues are produced; the secondary pollution of arsenic is avoided, and the recovery rate of metal is high.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal metallurgy, and in particular relates to a treatment method and device for antimony and arsenic materials. Background technique [0002] my country is a big country producing antimony, and it is also the country with the richest antimony resources in the world. The antimony reserves account for 32.9% of the world's antimony reserves. However, after decades of mining, the proven resource reserves of single antimony ores have been decreasing year by year, and the reserve base is insufficient. Therefore, it is necessary to turn to the development and utilization of mixed antimony ores such as lead antimony ore and antimony arsenic ore. The mining and utilization of mixed antimony ores have produced a large amount of antimony-arsenic alloys. Arsenic is a very harmful impurity element. It volatilizes under normal pressure and reacts with oxygen in the air to form arsenic trioxide (As 2 o 3 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B30/02C22B9/02
CPCY02P10/20
Inventor 陈正惠应武郭键柄张琪
Owner LANZHOU ENG & RES INST OF NONFERROUS METALLURGY
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