Paper Title:
Control of the Redox Potential by Oxygen Limitation Inhibits Bioleaching of Pyrite
  Abstract

Based on the bioleaching mechanism and electrochemical studies of metal sulfides, the dissolution rate of secondary copper sulfides and pyrite are controlled by redox potentials. Experiment on the bioleaching of the secondary copper sulfides under constant potential by sparging with nitrogen gas demonstrated, by analyzing Cu and Fe content of the bioleaching solution and residues, the pyrite and secondary cooper sulfides dissolution rates have large difference in various redox potential. The pyrite and secondary cooper sulfides have good selection when the redox potential controlled between 700mV and 760mV, we can realize the secondary copper sulfides bioleaching process be controlled, then supply theoretical guide for the iron-acid balance during copper bioleaching process.

  Info
Periodical
Advanced Materials Research (Volumes 71-73)
Edited by
Edgardo R. Donati, Marisa R. Viera, Eduardo L. Tavani, María A. Giaveno, Teresa L. Lavalle, Patricia A. Chiacchiarini
Pages
401-404
DOI
10.4028/www.scientific.net/AMR.71-73.401
Citation
B. Wu, J. K. Wen, G. Y. Zhou, R. M. Ruan, "Control of the Redox Potential by Oxygen Limitation Inhibits Bioleaching of Pyrite", Advanced Materials Research, Vols. 71-73, pp. 401-404, 2009
Online since
May 2009
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: E. Zhou, Jian Kang Wen, Ren Man Ruan, Dian Zuo Wang
Abstract:Based on the bioleaching mechanism and electrochemical studies of covellite, the dissolution rate of covellite mineral is accelerated...
152
Authors: Wen Qing Qin, Yan Sheng Zhang, Shi Jie Zhen, Jun Wang, Jian Wen Zhang, Guan Zhou Qiu
Abstract:The effects of several variables on the column bioleaching of copper sulphide ore have been investigated. The copper ore contained...
409
Authors: B. Escobar, S. Buccicardi, G. Morales, J.V. Wiertz
Abstract:Chilean copper production has been growing in the last 20 years reaching an annual production of 5,557,000 tons of Cu in 2007. For each ton...
433
Authors: Jin Liu, Dong Wei Li, Shao Jian Zhang, Dou Li, Lin Yu
Sustainable Materials and Applications
Abstract:The bioleaching effect of different concentrations of silver ion catalysis on chalcopyrite tailings has been investigated in shaking flasks....
635
Authors: Zhi Wu, Shui Ping Zhong, Zhong Sheng Huang, Ren Man Ruan, Zeng Ling Wu, Gang Zou
Chapter 18: Metallurgical Physical Chemistry and Ferrous Metallurgy Technology
Abstract:Dissolution of pyrite by chemical oxidation and bioleaching were studied with using short-term batch experiments. The results show that the...
3059