Copper, zinc, and iron bioleaching from polymetallic sulphide concentrate

被引：22

作者：

Conic, Vesna T. ^{[1
]}

Rajcic Vujasinovic, Mirjana M. ^{[2
]}

Trujic, Vlastimir K. ^{[1
]}

Cvetkovski, Vladimir B. ^{[1
]}

机构：

[1] Min & Met Inst Bor, Lab Bioleaching & Solvent Extract, Bor 19210, Serbia

[2] Univ Belgrade, Tech Fac Bor, Bor 19210, Serbia

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2014年 / 24卷 / 11期

关键词：

bioleaching; polymetallic sulphide concentrate; mesophiles; Acidithiobacillus ferrooxidans; ACIDITHIOBACILLUS-FERROOXIDANS; CHALCOPYRITE CONCENTRATE; SELECTIVE EXTRACTION; PILOT-PLANT; ORE; BACTERIA; GOLD; HEAP; LEPTOSPIRILLUM; OPTIMIZATION;

D O I：

10.1016/S1003-6326(14)63516-0

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Bioleaching of low-grade complex Cu-Zn-Pb-Fe-Ag-Au sulphide concentrate (of Majdanpek ore body, RTB Bor, Serbia) was carried out in an aerated bioleach reactor in the presence of mesophilic mixed bacterial culture of Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans, and Leptospirillum ferrooxidans. A mesophilic acidophiles culture was isolated from the acidic solution of the underground copper mine of Bor, Serbia. The nutrient medium was 9K at pH 1.6. 87% of the particles were <10 mu m in size, with a pulp density of 8% (w/v). Bioleaching efficiencies of 89% for zinc, 83% for copper, and 68% for iron can be achieved in the examined conditions. Kinetic analysis shows that the change in leaching corresponds to the Spencer-Topley kinetic model for diffusion-controlled topochemical reactions.

引用

页码：3688 / 3695

页数：8

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