Silver-catalyzed bioleaching for raw low-grade copper sulphide ores

作     者：Tianlong DENG Yafei GUO Mengxia LIAO Dongchan LI 

作者机构：College of MaterialsChemistry and Chemical EngineeringChengdu University of TechnologyChengdu 610059China Qinghai Institute of Salt LakesChinese Academy of SciencesXining 810008China 

出 版 物：《Frontiers of Chemical Science and Engineering》 (化学科学与工程前沿（英文版）)

年 卷 期：2009年第3卷第3期

页      面：250-254页

核心收录：

学科分类：0202[经济学-应用经济学] 02[经济学] 020205[经济学-产业经济学] 

基　　金：Financial contributions from the National Natural Science Foundation of China(Grant Nos.20776019 and 40573044) the“A Hundred Talents Program”of the Chinese Academy of Sciences(No.0560051057) the Key Program of Department of Education of Sichuan Government(No.2004A146) the Applied Basic Research Program of Sichuan Government(Nos.05JY029-089-1,05JY029-089-2)are acknowl-edged 

主　　题：green process biohydrometallurgy bioleach-ing reaction kinetics sulphide ores 

摘      要：This research was conducted to investigate the biooxidation and copper dissolution from raw low-grade refractory copper sulphide ores located in the Xinjiang Autonomous Region of China using adapted Thiobacillus ferrooxidans *** order to accelerate the bioleach-ing rate,the adapted mixed bacteria and silver ion catalyst were tested in the leach columns at laboratory *** overall acid consumption was 4.3kg sulphuric acid per kg of dissolved copper and was linearly related to the percent copper *** calculated copper dissolution rates obey the Shrinking Core *** relative activation energy of the whole biooxidative leaching stages was calculated to be 48.58kJ/mol.