摘要
针对甘肃省坪定金矿含金、砷高、金部分地赋存于脉石、脉石为碱性、属于难选难冶矿的特点，提出了氨水脱砷－石灰加压氧化－氰化新工艺．当原矿含金8．7g／t及13．0％砷时，砷可脱除95％，金可浸出85％．技术及经济指标预计均较满意．
The Pingding gold ore from Gansu Province is refractory in fioatation and metallurgy.Despite high gold grade,it has high arsenic content, higy alkaline gangue and gold is partly disseminated in the gangue.In this paper, a new process consisting of dearsenication with ammonia water, pressure oxidation in lime milk followed by cyanidation was developed, which is shown successful in the treatment of Pingding gold ore.With the gold ore containing 8.7 g/t Au and 13.0% As, the dearsenication over 95% and gold extraction over 85% were demonstrated. The technique and economic targets of the new process derived from the experiments is quite promising.
出处
《化工冶金》
CSCD
北大核心
1995年第3期223-228,共6页
关键词
含砷金矿
氧化
氰化
氨水
脱砷
炼金
Arsenic containing gold ore, Oxidation,Cyanidation, Ammonia water,Dearsenication
