Biohydrometallurgical Technology of Copper Recovery from a Complex Copper Concentrate

被引：13

作者：

Muravyov, M. I. ^{[1
]}

Fomchenko, N. V. ^{[1
]}

Kondrat'eva, T. F. ^{[1
]}

机构：

[1] Russian Acad Sci, Winogradsky Inst Microbiol, Moscow 117312, Russia

来源：

APPLIED BIOCHEMISTRY AND MICROBIOLOGY | 2011年 / 47卷 / 06期

关键词：

SULFIDES; CHALCOPYRITE;

D O I：

10.1134/S0003683811060093

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Leaching of sulfide-oxidized copper concentrate of the Udokan deposit ore with a copper content of 37.4% was studied. In the course of treatment in a sulfuric acid solution with pH 1.2, a copper leaching rate was 6.9 g/kg h for 22 hours, which allowed extraction of 40.6% of copper. At subsequent chemical leaching at 80 C during 7 hours with a solution of ferric sulfate obtained after biooxidation by an association of micro-organisms, the rate of copper recovery was 52.7 g/kg h. The total copper recovery was 94.5% ( over 29 hours). Regeneration of the Fe3+ ions was carried out by an association of moderately thermophilic microorganisms, including bacteria of genus Sulfobacillus and archaea Ferroplasma acidiphilum, at 1.0 g/L h at 40 degrees C in the presence of 3% solids obtained by chemical leaching of copper concentrate. A flowsheet scheme of a complex copper concentrate process with the use of bacterial-chemical leaching is proposed. DOI: 10.1134/S0003683811060093

引用

页码：607 / 614

页数：8

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