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本文概述了氨浸法预处理含雌黄、雄黄的坪定金矿石及含砷锑汞的丹寨微细粒金精矿的应用研究。提出了用５％～７％氨水溶液溶解雌黄，并在８５℃及常压下氨水中加入硫磺，使难溶的雄黄转化为雌黄而溶解；在８５℃及２００ｋＰａ压力下，于５％～７％氨水溶液中加入铜离子作催化剂，催化氧化残余的雌黄、雄黄及毒砂的新型工艺，并对工艺过程各因素的影响进行了较为详细的研究。当用硫氨法脱砷－氨性催化氧化－氰化法处理坪定金矿石及用氨性催化氧化－氰化法处理丹寨金精矿时，都取得了较满意的效果。经预处理后，金的氰化浸出率分别可达８５％及８０％～８５％。
This paper summarizes the application of ammonia leaching method to pretreat female gold and realgar Pingding gold ore and Danzhai fine gold concentrate containing arsenic, stibium and mercury. It is proposed that 5% ~ 7% ammonia solution dissolves estrogen and sulfur is added into ammonia at 85 ° C and atmospheric pressure to convert insoluble realgar to estrogen and dissolve; under 85 ℃ and 200kPa pressure, % Ammonia solution by adding copper ion as a catalyst to catalyze the oxidation of the residual process of rehmannia, realgar and arsenopyrite. The effects of various factors on the process were studied in detail. The treatment of Pingding gold ore with ammonia-depleted arsenic-ammoniacal catalytic oxidation-cyanidation process and the treatment of Danzai gold concentrate with ammonia catalytic oxidation-cyanidation have all achieved satisfactory results. After pretreatment, gold cyanide leaching rate of up to 85% and 80% to 85%.