PRETREATMENT OF CHALCOPYRITE ORE WITH ALKALI - A SIMPLE TECHNIQUE TO IMPROVE THE LEACHING MEDIATED BY THIOBACILLUS-FERROOXIDANS

被引：4

作者：

DATTA, TK ^{[1
]}

GHOSH, N ^{[1
]}

SEN, R ^{[1
]}

DASGUPTA, AK ^{[1
]}

机构：

[1] UNIV KALYANI,DEPT BIOCHEM & BIOPHYS,KALYANI 741235,INDIA

来源：

MINERALS ENGINEERING | 1990年 / 3卷 / 06期

关键词：

alkali pretreatment; Chalcopyrite; leaching; Thiobacillus ferooxidans;

D O I：

10.1016/0892-6875(90)90010-9

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A simple method to promote the extraction of copper and iron from chalcopyrite ore using the bacterium Thiobacillus ferrooxidans is reported. The method involves prior treatment of the ore with alkali. The alkali treatment also altered the rate of iron precipitation during the leaching process. An alteration of the microenvironment caused by removal of any inhibitory gangue material is suspected to be the reason for the observed improvement in the leaching rate. The alkali wash method may be a more efficient substitute for "ore regrinding", the technique suggested by Torma [1] for removal of the inhibitory effect of a passivation layer that prevents further microbial attack onto the ore surface. © 1990.

引用

页码：641 / 644

页数：4

共 13 条

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