Process for preparing antimony by electrolyzing slurry of sulfide ore containing antimony

A technology of pulp electrolysis and antimony vulcanization, which is applied in the improvement of process efficiency, photographic technology, instruments, etc., can solve the problems of unsuitability, large volatilization of sodium sulfide, and high leaching temperature, and achieves convenient storage and transportation, and reduces volatilization loss. The effect of competitiveness
CN1381612AInactive Publication Date: 2002-11-27BEIJING GENERAL RES INST OF MINING & METALLURGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING GENERAL RES INST OF MINING & METALLURGY
Publication Date
2002-11-27
Estimated Expiration
Not applicable · inactive patent

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Abstract

A process for preparing antimony from the slurry of Sb-contained sulfide ore features that the said slurry is electrolyzed in the hydrochloric acid-ammonium chloride medium to produce the metal antimony plate under the conditions that the concentration of hydrochloric acid in slurry is 15-40 g / L, the concentration of ammonium chloride in it is 150-250 g / L, the concentration of Sb in it is 10-50 g / L, the temp. is from ordinary temp of 70 deg.C and current density of cathode is 150-200 A / sq.m. Its advantages are short flow path, one-step production of Sb plate, high metal recovery rate, and selective extraction of Sb.
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Description

(1) Technical field

[0001] A method for producing antimony by electrolysis of antimony-containing sulfide mineral slurry, involving a method of extracting antimony from antimony concentrate or complex and difficult-to-handle antimony-containing sulfide minerals, such as brittle stibnite, antimony / gold mixed concentrate or arsenic-containing antimony concentrate , especially the method of extracting antimony from the above-mentioned antimony-containing minerals by means of slurry electrolysis technology. (2) Background technology

[0002] The traditional wet antimony smelting process is to use antimony concentrate sodium sulfide leaching-leaching solution purification-diaphragm electrowinning to produce electroantimony. But it has the following disadvantages: 1) there is the accumulation of growth and accumulation of sodium sulfide, the oxidation of polysulfide and the accumulation of sulfate and sulfite in the leaching process; 2) the current efficiency is low, generally 70%...

Claims

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