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Wet process-pyrogenic process joint smelting process for antimony or bismuth

A process and wet technology, applied in the field of antimony extraction, can solve the problems of complex equipment, high energy consumption, heavy pollution, etc.

Active Publication Date: 2012-07-04
YIYANG SHENGLI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a new method for extracting antimony (or bismuth) from the antimony (or bismuth) concentrate containing antimony (or bismuth) material, to improve the energy consumption existing in the current antimony (or bismuth) smelting process High pollution, heavy pollution, complicated equipment, etc., realize the clean production of antimony (or bismuth), and achieve the purpose of energy saving, emission reduction, consumption reduction and value-added

Method used

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  • Wet process-pyrogenic process joint smelting process for antimony or bismuth
  • Wet process-pyrogenic process joint smelting process for antimony or bismuth
  • Wet process-pyrogenic process joint smelting process for antimony or bismuth

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The composition of bismuth concentrate provided by a company in Hunan is: Bi 25.02%, WO 3 0.43%, Mo 3.17%, Fe 20.68%, SiO 2 6.33%, Cu 1.6%, S 26.5%.

[0076] Get the above-mentioned bismuth concentrate powder 100g, the liquid-solid ratio is 4:1, and the acidity of hydrochloric acid is 4mol·L -1 , oxidant NaClO 3 The amount of addition (in Bi 2 S 3 The consumption meter) is 1.5 times of the theoretical amount. After leaching for 3 hours under the condition of 70 ° C, the leaching temperature is 70 ° C. After leaching, filtration and separation, the washing liquid and the filtrate are combined, and the filter residue is dried and weighed. The bismuth content in the filtrate and the filter residue was analyzed, and the leaching rate of bismuth was obtained as 99.6% (in liquid) / 99.1% (in slag).

[0077] Analysis of impurities and Fe in the filtrate 3+ , Cu 2+ , Ag + 1.5 times the theoretical amount of bismuth powder was added to carry out reduction purification and...

Embodiment 2

[0081] The composition of antimony concentrate provided by a company in Hunan is: Sb 37.31%, Fe 13.68%, SiO 2 6.33%, Cu 4.6%, Au 8g t -1 , S26.5%.

[0082] Take 100g of the above-mentioned antimony concentrate powder, the liquid-solid ratio is 5:1, and the acidity of hydrochloric acid is 4.5mol·L -1 , oxidant SbCl 5 The amount of addition (in Sb 2 S 3 The consumption meter) is 2 times of the theoretical amount, the leaching temperature is 60 ℃ after leaching for 2 hours, filtration and separation, the washing liquid and the filtrate are combined, and the filter residue is dried and weighed. The antimony content in the filtrate and filter residue was analyzed, and the leaching rate of antimony was 98.9% (liquid) / 99.4% (slag), and the gold enrichment rate in the residue was 99.9%.

[0083] Analysis of the main impurity components and Fe in the filtrate 3+ , Cu 2+ The content of 1.2 times the theoretical amount of antimony sponge powder and ammonium sulfide was added to c...

Embodiment 3

[0087] A kind of bismuth-containing soot, bismuth is represented by Bi 2 O 3 form exists. The main components (%) are: Bi 4.23, Pb 41.30, Sn 3.01, Zn 1.0, Cu 1.7, As 2.3, S 9.7, Cd 0.12, In 0.016, Ag 0.01, Ge 0.02.

[0088] Take 10000g of above-mentioned bismuth soot powder, the liquid-solid ratio is 4:1, and the acidity of hydrochloric acid is 4mol·L -1 3. After leaching for 3 hours at a leaching temperature of 60°C, filter and separate, combine the washing liquid and filtrate, and dry and weigh the filter residue. The bismuth content in the filtrate and the filter residue was analyzed, and the leaching rate of bismuth was 96.2% (in liquid) / 95.5% (in slag).

[0089] Add 1.2 times the theoretical amount of thiourea as a reducing and purifying agent, and after reducing and purifying at room temperature for 40 minutes, filter and separate.

[0090] [Fe in the solution after reduction and purification 3+ ] and [Cu 2+ ] can reach below 0.01g / L.

[0091] At 50°C, add base NH...

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Abstract

The invention discloses a wet process-pyrogenic process joint smelting process for antimony or bismuth. First, antimony is leached out from a material containing antimony (or bismuth), then reduction and purification are conducted on leaching liquid, then hydrolysis is conducted on the purified liquid to obtain antimony oxychloride (or bismuth oxychloride), and finally refined antimony (or refined bismuth) is obtained through inertia reduction smelting in a Na2CO3 system with the obtained antimony oxychloride (or bismuth oxychloride) serving as a raw material. The method solves the problems in the existing high temperature smelting of antimony (or bismuth) that pollution of low concentration SO2 and heavy metal powder is severe, energy consumption is big, efficiency is low, precious and rare metal is dispersed and the like. Simultaneously, Na2CO3 is not consumed during reduction smelting and can be used as an inertia fusing agent to return to smelting again, therefore energy consumption and reagent consumption are greatly reduced, and defects that a large amount of arsenic sludge hard to process is produced in the existing smelting process and the like are avoided. The wet process-pyrogenic process joint smelting process has the prominent advantages of being small in environment pressure, strong in raw material adaptability, high in metal (enrichment rate) recovery rate, small in energy consumption and low in cost.

Description

technical field [0001] The invention belongs to the field of metallurgy and chemical industry, and relates to a method for extracting antimony (or bismuth) from antimony (or bismuth) concentrate or antimony (or bismuth)-containing material. Background technique [0002] Antimony (Sb) is a silver-white brittle metal and is an acid-resistant substance at room temperature. It is a widely used metal, known as "the hero of fire fighting", "strategic metal", "metal hardener", "fluorescent tube, electronic tube protective agent". [0003] The existing production methods of metal antimony can be divided into two categories: fire method and wet method. "Blast furnace volatilization smelting - reverberatory furnace reduction smelting" is currently the most important fire antimony smelting process. In this process, antimony sulfide concentrate or antimony-containing materials are first pressed or granulated, and then added to the blast furnace together with coke and flux. Volatile sm...

Claims

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Application Information

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IPC IPC(8): C22B30/02C22B30/06C22B5/02C22B3/04C22B3/46C22B3/44
CPCY02P10/20
Inventor 杨建广刘小文李静邓自祥陈永明唐朝波杨声海何静唐谟堂
Owner YIYANG SHENGLI CHEM IND
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