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本文以高冰镍磨浮所产的磁性铜镍合金,经盐酸浸出镍后的含贵金属铜渣为原料,采用控制电位选择性氯化法,将氧化还原电位较正的铜、镍等贱金属选择氯化转入溶液;氧化还原电位较负的贵金属则不被氯化留于渣中得到富集。本文系统地研究了氯化过程中电位,酸度,温度及固液比等因素对铜、镍浸出率及贵金属损失的关系。并考查了氯化渣浓硫酸浸煮,四氯乙烯脱硫进一步富集贵金属的效果及其分散情况。通过以上工序,贵金属富集100倍,贵贱金属比由1:630上升为2:1。贵金属品位由1560克/吨增至13.59%。贵金属回收率分别为:铂、钯、金、铱～100%;Rh 95%;Os 70～80%;Ru 80～90%。]
In this paper, the magnetic nickel-copper alloy produced by high-nickel-nickel frosted floatation and the precious metal-containing copper slag leached with hydrochloric acid were used as raw materials. The selective chlorination method was used to select the base metal such as copper and nickel with more correct oxidation-reduction potential Into the solution; the more negative oxidation-reduction potential of precious metals are not left in the chloride chloride enrichment. This paper systematically studied the chlorination process potential, acidity, temperature and solid-liquid ratio and other factors on the copper and nickel leaching rate and the relationship between the loss of precious metals. And examined the chlorine residue concentrated sulfuric acid leaching, PCE desulfurization further enrichment of precious metals effect and its dispersion. Through the above process, the precious metal is enriched 100 times and the precious metal is increased from 1: 630 to 2: 1. Precious metal grade increased from 1560 g / t to 13.59%. Precious metals recovery rates are: platinum, palladium, gold, iridium ~ 100%; Rh 95%; Os 70 ~ 80%; Ru 80 ~ 90%. ]