Effects of redox potential on chalcopyrite leaching: An overview

Chalcopyrite is a prime, plentiful and widely distributed form of copper-bearing mineral. Compared with the traditional pyrometallurgy process, biohydrometallurgy has environmental and economic advantages, and is thus considered to be a promising mineral-processing technology. However, the dissoluti...

Full description

Saved in:
Bibliographic Details
Published inMinerals engineering Vol. 172; p. 107135
Main Authors Tian, Zuyuan, Li, Haodong, Wei, Qian, Qin, Wenqing, Yang, Congren
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.10.2021
Subjects
Band theory
Bioleaching
Chalcopyrite
Chemical leaching
Redox potential
Band theory
Bioleaching
Chalcopyrite
Redox potential
Chemical leaching
Online AccessGet full text

Cover

More Information
Summary:Chalcopyrite is a prime, plentiful and widely distributed form of copper-bearing mineral. Compared with the traditional pyrometallurgy process, biohydrometallurgy has environmental and economic advantages, and is thus considered to be a promising mineral-processing technology. However, the dissolution kinetics of chalcopyrite in hydrometallurgy are low due to its high lattice energy. Redox potential has a significant role as chalcopyrite dissolves, and the possibility of controlling redox potential to promote chalcopyrite leaching cannot be ignored. In this article, the impact of redox potential on chemical leaching and bioleaching of chalcopyrite, reported in previous publications, are summarized. The effects of ferrous ions, ferric ions and copper ions in chalcopyrite leaching system are discussed, and the leaching behavior of chalcopyrite is explained by the band theory.
ISSN:0892-6875
1872-9444
DOI:10.1016/j.mineng.2021.107135