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公开(公告)号：US4260588A
公开(公告)日：1981-04-07
申请号：US074042
申请日：1979-09-10
CPC分类号： C22B15/0069 , C22B15/0093 , Y02P10/236
摘要： A process for the production of a sulphidic copper concentrate from a complex sulphidic concentrate containing as its main constituents copper, iron and at least one non-ferrous metal selected from the group consisting of zinc, lead, nickel and cobalt, comprising mixing the complex sulphidic concentrate with a copper-containing predominantly chloridic solution thereby to form a suspension, and treating the suspension thus obtained at elevated temperature and pressure at a pH-value of below 3, thereby to form a sulphidic copper concentrate, thereby the non-ferrous metals being extracted from the concentrate without formation of significant amount of acid. Precious metals may also be present. Advantageously the ratio by weight of the complex concentrate added to the copper-containing predominantly chloridic solution to the copper content of the solution is such that the predominantly chloridic solution after being at least partly freed from copper by an exchange reaction has a potential at 60.degree. C. of at least about 400 mV versus the standard hydrogen electrode.
摘要翻译： 一种从复合硫化物浓缩物中生产硫化铜精矿的方法，该复合硫化物浓缩物含有铜，铁和至少一种选自锌，铅，镍和钴的有色金属，包括混合复合硫化物 用含铜的主要氯化物溶液浓缩，从而形成悬浮液，并在低于3的pH值的高温和高压下处理由此获得的悬浮液，从而形成硫化铜精矿，由此有色金属为 从浓缩物中提取而不形成显着量的酸。 贵金属也可能存在。 有利地，添加到含铜主要氯化物溶液中的复合浓缩物与溶液的铜含量的重量比使得在通过交换反应至少部分地从铜中除去之后主要是氯化物溶液具有60℃的电位 相对于标准氢电极至少约400mV。
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公开(公告)号：US4131454A
公开(公告)日：1978-12-26
申请号：US847888
申请日：1977-11-02
摘要： Process for selectively separating precious metal such as silver and gold from a chloride solution of the precious metals and other heavy metals which involves:(a) adding finely divided activated carbon to the solution for reduction of gold to gold metal and absorption of the gold metal by the carbon,(b) adding an aqueous solution of an iodine compound for selective precipitation of further precious metal including the silver, if present.During steps (a) and (b) the pH is below 3 so that hydrolysis with the metal ions does not occur, and the potential of the solution during step (b) is such that no substantial decomposition of the iodine compound occurs. The precipitated precious metal and active carbon are separated, dried, and admixed with an iodine binder, and the resulting admixture is subjected to reduction for formation of a regulus containing the precious metal.
摘要翻译： 用于从贵金属和其它重金属的氯化物溶液中选择性分离诸如银和金的贵金属的方法，其涉及：
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