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    • 4. 发明授权
    • Winning of metal values from ore utilizing recycled acid leaching agent
    • 从利用再生酸浸剂的矿石中获取金属价值
    • US3923615A
    • 1975-12-02
    • US37921373
    • 1973-07-16
    • DEEPSEA VENTURES INC
    • KANE WILLIAM SCARDWELL PAUL H
    • C22B47/00C25C1/10
    • C25C1/10C22B47/0063Y02P10/236Y10S423/04
    • This invention provides a process for selectively removing desirable metal values from an ocean floor nodule ore wherein the ore is initially leached with an aqueous solution of a mineral acid to preferentially form water-soluble salts of nickel and copper, which are dissolved in the leach solution, followed by releaching the solid leached ore under reducing conditions using a reducing reagent capable of reducing tetravalent manganese to divalent manganese and of forming water-soluble salts of cobalt and divalent manganese which are in turn dissolved into the leach solution resulting preferably in a single aqueous pregnant leach solution comprising the dissolved salts of copper, cobalt, nickel and divalent manganese. Preferably, the above four named metal values are individually separated into individual aqueous solutions which preferably are in turn reduced to the elemental metals by electrolysis procedures. The advantage of this process lies in the fact that it can utilize waste products from this and other industrial procedures. The reducing reagents, which can be used, include ferrous salts obtained from pickling procedures, and the mineral acid leach solution can be recycled as spent electrolyte from the electrolysis procedures especially that for the formation of elemental manganese.
    • 本发明提供了一种从海底结节矿选择性去除所需金属值的方法,其中矿石最初用无机酸的水溶液浸出,以优先形成溶解在浸出溶液中的镍和铜的水溶性盐 ,然后在还原条件下使用能够将四价锰还原为二价锰的还原剂和形成钴和二价锰的水溶性盐的溶液再次溶解在浸出溶液中,从而优选地将单一水溶液 包含铜,钴,镍和二价锰的溶解盐的怀孕浸出溶液。 优选地,将上述四种命名的金属值分别分离为单独的水溶液,其优选通过电解方法还原成元素金属。