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首页> 外文会议>EPD congress 2004 >HYDROMETALLURGICAL METHOD FOR TREATING SPECIAL ALLOYS, JEWELRY, ELECTRONIC AND ELECTROTECHNICAL SCRAP
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HYDROMETALLURGICAL METHOD FOR TREATING SPECIAL ALLOYS, JEWELRY, ELECTRONIC AND ELECTROTECHNICAL SCRAP

机译：液压合金方法处理特殊合金，珠宝，电子和电工废料

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摘要

A purely hydrometallurgical flowsheet developed in the Gintsvetmet Institute is based on the use of a versatile acidic technique for recovery of precious and non-ferrous metals into solution. This flowsheet ensures separate recovery of silver and gold, as well as commercial-grade palladium and platinum metal powders. Two alternatives are possible for manufacture of silver metal powder from silver chloride. Depending on the palladium content of solutions different alternatives are possible for palladium concentration and refining. Palladium metal powder is produced by aqueous heterogeneous reaction of palladosamine with formic acid. Platinum metal powder is produced by aqueous heterogeneous reaction of ammonium hexachloroplatinate with formic acid at 90 C to 100 C. The proposed flowsheet makes it possible to reliably obtain commercial-grade products of the following quality: bullion gold containing (%%): 99.6- 99.9 Au, 0.05-0.2 Ag, 0.007-0.02 Cu, 0.003-0.04 Pd, 0.003-0.005 Fe, 0.005 Pb, 0.005 Sb and 0.005 Bi; silver ingots containing (%%): 99.6-99.9 Ag, 0.07-0.3 Au, 0.01-0.03 Pd, 0.007-0.02 Cu, 0.003-0.005 Fe, 0.005 Pb, 0.005 Sb, 0.005 Bi; as well as platinum and palladium metal powders.
机译：金特斯韦德梅特研究所（Gintsvetmet Institute）开发的一种纯湿法冶金流程图是基于使用一种通用的酸性技术将贵金属和有色金属回收到溶液中的。该流程图可确保分别回收银和金以及商业级的钯和铂金属粉末。由氯化银制造银金属粉末有两种选择。根据溶液中钯的含量，可以对钯进行浓缩和提纯使用不同的替代方法。钯金属粉末是通过帕拉多胺与甲酸的水相非均相反应制得的。铂金属粉末是通过六氯铂酸铵与甲酸在90°C到100°C下的水相非均相反应生产的。建议的工艺流程使得可以可靠地获得以下质量的商业级产品：金银含量（%%）：99.6- 99.9 Au，0.05-0.2 Ag，0.007-0.02 Cu，0.003-0.04 Pd，0.003-0.005 Fe，0.005 Pb，0.005 Sb和0.005 Bi;含（%%）的银锭：99.6-99.9 Ag，0.07-0.3 Au，0.01-0.03 Pd，0.007-0.02 Cu，0.003-0.005 Fe，0.005 Pb，0.005 Sb，0.005 Bi;以及铂和钯金属粉末。

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