中国有色金属学报(英文版)
Transactions of Nonferrous Metals Society of China
| Vol. 5 No. 4 December 1995 |
NON-POLLUTION PROCESS FOR COMPLEX REFRACTORY SILVER-GOLD ORES
（Department of Nonferrous Metallurgy; Central South University of Technology; changsha 410083）
Abstract:Chemistry of lime roasting process for complex sulfided concentrate was described briefly,the chemical phases of gold,silver and carbonaceous substances in the concentrate were also investigated,and the influences of roasting temperature,time and stoichiometic ratio of hydrated lime on sulfur retention and silver extraction of the calcine were studied finally.Under the optimized conditions,gold-silver extractions exceeded 93% and 83%,respectively.
Key words: complex ore; carbonaceous substances; silver-gold concentratem; lime roasting
