Transactions of Nonferrous Metals Society of China
JOURNAL OF RAILWAY SCIENCE AND ENGINEERING
|Vol. 5 No. 1 March 1995|
（1.Institute of Chemical Metallurgy; Academia Sinica; Beijing 100080;
2.School of MPS; Murdoch University; WA 6150; Australia）
Abstract:Oxygenated chloride leaching process was tested on a Telfer off-grade copper-gold bulk concentrate to justify the pretreatment of gold materials containing considerable copper sulfides. It has proven to be feasible for extracting copper under rather mild conditions and leaving pyrite intact. Nearly 98% of copper was leached by this process using 0.5 mol/L chloride at 85℃ and only 0.2g/L iron was transferred into the pregnant solution.
Key words: copper; selective leaching; cupriferous gold concentate