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1. 发明授权

US5279641A Method for concurrent production of copper powder and a metal chloride 失效
标题翻译：同时生产铜粉和金属氯化物的方法
公开(公告)号：US5279641A
公开(公告)日：1994-01-18
申请号：US5980
申请日：1993-01-19
申请人： Toshio Narisawa , Ryohei Kato , Masanori Nakamura , Hitoyoshi Yamaguchi
发明人： Toshio Narisawa , Ryohei Kato , Masanori Nakamura , Hitoyoshi Yamaguchi
IPC分类号： B22F9/24 , C01G1/06 , C22B15/00 , C23F1/46
CPC分类号： C22B15/0089 , B22F9/24 , C01G1/06 , Y02P10/236
摘要： A novel method is proposed for concurrently producing a metallic copper powder and a valuable chloride of a metal other than copper, e.g., manganese, zinc, cobalt, nickel and tin, from a depleted aqueous etching solution containing copper (II) chloride as discharged from the etching process in the manufacture of copper-foiled printed circuit boards. The inventive method also contributes to solve the problem for the disposal of such a waste solution without causing the troubles in connection with environmental pollution. The inventive method comprises the steps of: treating the waste solution with an active carbon so as to remove organic impurities; admixing the solution with a powder, granules or flakes of the above mentioned metal so as to precipitate the copper value in the metallic form, instead, giving an aqueous solution of the chloride of the added metal; and separating the copper metal powder and the chloride solution.
摘要翻译：提出了一种新颖的方法，用于从含有氯化铜（II）的贫化水溶液中同时制备金属铜粉末和铜以外的金属（例如锰，锌，钴，镍和锡）的有价值氯化物，在铜箔印刷电路板的制造中的蚀刻工艺。本发明的方法还有助于解决这种废溶液的处理问题，而不会引起与环境污染有关的麻烦。本发明的方法包括以下步骤：用活性炭处理废溶液以去除有机杂质; 将溶液与上述金属的粉末，颗粒或薄片混合，以沉淀金属形式的铜值，而不是给出添加的金属的氯化物的水溶液; 并分离铜金属粉末和氯化物溶液。

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