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罗马尼亚专利NO86452提出用王水溶解铂金合金废料。王水的用量为3毫升/克废料,并分批使用。溶液蒸发后获得糊状产物。用3NHCl溶解糊状产物。用乙醚从氯化物溶液中逆流萃取金。经过净化、并已稀释到PH1.1——1.3、铂浓度≤10％的水相,则通过离子交换柱。交换柱含有H~+形态的VlONlT—CS32。在Na_2CO_3存在下,利用联氨硫酸盐,从冲洗液中沉淀铂黑。用二次蒸馏水冲洗铂黑,并在800℃下灼烧。金属产出率为
Romanian Patent No. 86452 proposes to dissolve platinum alloy scrap with aqua regia. Wang water consumption of 3 ml / g waste, and used in batches. The solution was evaporated to give a mushy product. The paste was dissolved with 3N HCl. Countercurrent extraction of gold from the chloride solution with ether. After purification and has been diluted to PH1.1--1.3, platinum concentration ≤ 10% of the aqueous phase, then through the ion exchange column. Exchange column contains H ~ + form VlONlT-CS32. Platinum black was precipitated from the processing solution using hydrazine sulfate in the presence of Na 2 CO 3. Platinum black was rinsed with double distilled water and fired at 800 ° C. Metal output rate is