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    Process for the production of metals
    65.
    发明授权
    Process for the production of metals 失效
    金属生产工艺

    公开(公告)号：US3820979A

    公开(公告)日：1974-06-28

    申请号：US21627472

    申请日：1972-01-07

    申请人： YEDA RES & DEV

    发明人： MANASSEN J

    IPC分类号： C01G3/00 ,  C01G5/00 ,  C01G13/00 ,  C22B3/26 ,  C22B43/00 ,  C22B5/00

    CPC分类号： C01G3/003 ,  C01G5/003 ,  C01G13/003 ,  C22B3/0008 ,  C22B43/00 ,  Y02P10/234

    摘要： A process for the production of metallic metals selected from the group consisting of copper, silver and mercury, which comprises contacting an aqueous solution of the metal compound with a solution of a reduced quinonic compound, preferably an anthraquinone compound, in an organic solvent which is substantially insoluble in and immiscible with water, resulting in the precipitation of the metallic compound which is recovered. The organic phase may be separated, the quinonic compound may be reduced and used again for treating subsequent batches of metal salts.

    Process for the recovery noble metals
    66.
    发明授权
    Process for the recovery noble metals 失效
    回收金属的工艺

    公开(公告)号：US3709681A

    公开(公告)日：1973-01-09

    申请号：US3709681D

    申请日：1970-01-08

    申请人： GOLDEN CYCLE CORP

    发明人： WILSON H

    IPC分类号： C01G5/00 ,  C01G7/00 ,  C01G55/00 ,  C22B3/16 ,  C22B11/06 ,  C22B11/04

    CPC分类号： C22B3/16 ,  C01G5/003 ,  C01G7/003 ,  C01G55/001 ,  C22B11/06 ,  Y02P10/234

    摘要： Processes for and compositions utilized in the recovery of noble metals from noble metal containing substances by subjecting such substances- preferably in comminuted form- to the action of a solvent preferably comprising diacetone alcohol as a major component, water, minor amounts of glacial acetic acid potassium iodide and elemental iodine. Solvation of the noble metal occurs during agitation and heating of the slurry. The noble metal contents are removed from the noble metal pregnant solution by displacement onto a non-noble metal surface. The solid noble metal containing residue is treated with sufficient aqueous hydroxide solution to convert excess non-noble metal into its water-soluble salt. The remaining insoluble material containing the noble metal recovered is rinsed to remove any remaining unreacted alkali and the soluble salts and is then digested with concentrated sulfuric acid to dissolve any remaining acid soluble impurities, the remaining acid insoluble residue is rinsed, dried and comprises substantially pure noble metal.

    摘要翻译： 通过将这些物质（优选以粉碎形式）经受优选包含双丙酮醇作为主要组分的溶剂的作用，将少量的冰醋酸钾用于从含贵金属的物质中回收贵金属的方法和组合物 碘化物和元素碘。 在搅拌和加热浆料期间发生贵金属的溶解。 通过置换到非贵金属表面上，将贵金属含量从贵金属怀孕溶液中除去。 固体含贵金属的残渣用足量的氢氧化
    钠溶液处理，将过量的非贵金属转化为水溶性盐。 将剩余的不含回收的贵金属的不溶物冲洗以除去任何剩余的未反应的碱和可溶性盐，然后用浓硫酸消化以溶解任何剩余的酸可溶性杂质，将剩余的不溶于酸的残余物漂洗，干燥并包含基本上纯的 贵金属。