Method for directly separating antimony and arsenic from flue dust containing antimony and arsenic

A kind of arsenic fume and direct technology, which is applied in the field of smelting special metal antimony and arsenic, can solve the problems of high cost, pollution of waste alkali slag, waste, etc., and achieve the effect of fast construction and production, low production investment and simple process smelting method

Inactive Publication Date: 2011-11-09
HUNAN TAOJIANG YAOXING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional smelting method only recovers arsenic and abandons the recovery of antimony, resulting in waste
A large amount of alkali and a large number of man-

Method used

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  • Method for directly separating antimony and arsenic from flue dust containing antimony and arsenic
  • Method for directly separating antimony and arsenic from flue dust containing antimony and arsenic

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] A. First, the antimony and arsenic fumes are evenly sent to the top of the reverberatory furnace according to the conventional technology pipeline conveying device and fall;

[0013] B. The above-mentioned antimony and arsenic fumes sent into the reverberatory furnace are heated to 680 ° C for combustion and refining;

[0014] C. Artificially stir and volatilize the raw materials in the above-mentioned combustion to generate arsenic trioxide vapor. Through the existing reverberatory furnace exhaust hole cooling device, the fan is blown into the baghouse to collect dust to obtain arsenic trioxide packaging. raw material slag;

[0015] D. Heat up the antimony raw material slag stored in the reverberatory furnace to 850°C for reduction again, and enter another baghouse to collect dust and antimony trioxide to be packaged.

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Abstract

The invention relates to a method for directly separating antimony and arsenic from flue dust containing the antimony and the arsenic. The method is characterized in that: the flue dust containing the antimony and the arsenic is conveyed in a reverberatory furnace and is separated to obtain arsenic trioxide and antimony trioxide by using temperature difference; the temperature for separating the arsenic trioxide is 680 DEG C; the arsenic trioxide passes through a air discharge cooling apparatus, and is insufflated in a bag chamber through a fan and collected; the remaining antimony raw material is heated to a temperature of 850 DEG C to carry out a reduction reaction to collect the antimony trioxide. According to the present invention, the collection efficiency of the arsenic trioxide is 98-98.5%, and the collection efficiency of the antimony trioxide is 98-99.8%; the smelting process method is simple; production investment is less; factory constructing and commissioning are quick.

Description

Technical field: [0001] The invention belongs to the technical field of smelting special metal antimony and arsenic. Background technique: [0002] According to the main components of the soot are antimony trioxide, arsenic trioxide and a small amount of lead, bismuth, gold, silver, etc., antimony trioxide is gray-black in the soot and has a melting point of 656°C; diarsenic trioxide sublimes at 193°C and has a melting point of 315°C. The traditional smelting method only recovers arsenic and abandons the recovery of antimony, which causes waste. A large amount of alkali and a large number of man-hours required for arsenic removal by reduction will cause high cost and produce a large amount of spent alkali slag, which will cause public nuisance. Invention content: [0003] The purpose of the present invention is to provide a method for directly separating antimony and arsenic from the dust of antimony and arsenic, which can be separated into diarsenic trioxide and diantimo...

Claims

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Application Information

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IPC IPC(8): B01D53/74C01G28/00C01G30/00
Inventor 张小妹李学才
Owner HUNAN TAOJIANG YAOXING CHEM
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