摘要
本文提出的氨性催化氧化－氰化法处理含砷难浸金精矿新工艺，其特点是在氨性溶液中以Cu2＋作催化剂，O2作氧化剂，在85℃及200kPa的操作压力下，将毒砂氧化，使其中的金游离出来，固液分离后再进行CILO氰化．对于含有砷锑汞碳的丹寨金精矿，其金品位为16.5～22g／t；金的氰化率可达80～87％.
In this paper, a new process, consisting of pressure oxidation in ammoniacal solution followed by cyanidation, was developed for treatment of arsenic refractory gold ores. In the process Cu2+ was used as catalytic agent and O2 gas as oxygenant in a ammoniacal solution at 85℃ and under 200 kPa operation pressure. Since gold was liberated from arsenopyrite in oxidization, the cyanidation process with CILO could be conducted in a great success. A gold percentage extraction of 80~87% as reached for Danzhai Mine gold concentrate containing As,Sb, Hg, C and 16~ 22 g/t Au.
出处
《化工冶金》
CSCD
北大核心
1996年第1期32-37,共6页
关键词
氨性催化氧化
氰化
炼金
浸出
Refractory gold ore containing arsenic, Ammoniacal catalytic oxidation,Cyanidation
