A comparative study of electrochemical behavior of chalcopyrite, chalcocite and bornite in sulfuric acid solution

被引：143

作者：

Arce, EA

González, I

机构：

[1] Inst Politecn Nacl, ESIQIE, Dept Ingn Met, Mexico City 07300, DF, Mexico

[2] Univ Autonoma Metropolitana Iztapalapa, Dept Quim, Mexico City 09340, DF, Mexico

来源：

INTERNATIONAL JOURNAL OF MINERAL PROCESSING | 2002年 / 67卷 / 1-4期

关键词：

chalcopyrite; chalcocite; bornite; CPE; voltammetry;

D O I：

10.1016/S0301-7516(02)00003-0

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A comparative study of the electrochemical behavior of different copper sulfide minerals (chalcopyrite, bornite and chalcocite) in sulfuric acid solutions was performed. Carbon paste electrodes (CPE) containing mineral particles with nonconducting binder were used. The comparative study shows that the chalcopyrite oxidation process does not produce covellite as claimed by some authors. Chalcopyrite oxidation has been found to produce a nonstoichiometric sulfide, Cun-1Fen-1S2n. On the other hand, it is apparent that bornite is not an intermediary species formed in the chalcopyrite reduction; the reduction of chalcopyrite directly produces chalcocite. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：17 / 28

页数：12

共 24 条

[1]

ARCE E, 2002, UNPUB HYDROMETALLURG

[2]

BAHENA G, 2001, THESIS ESIQIE JPN

[3] THE ELECTROCHEMISTRY OF SURFACE OXIDATION OF CHALCOPYRITE [J].