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    Recovery of copper sulphide and nickel from solution
    11.
    发明授权
    Recovery of copper sulphide and nickel from solution 失效
    从溶液中回收硫化铜和镍

    公开(公告)号：US3975189A

    公开(公告)日：1976-08-17

    申请号：US482533

    申请日：1974-06-24

    申请人： Leif R. Haugen

    发明人： Leif R. Haugen

    IPC分类号： C01G53/00 ,  C22B3/00 ,  C22B3/06 ,  C22B15/00 ,  C22B23/04 ,  C01G3/12

    CPC分类号： C22B23/0423 ,  C01G3/12 ,  C01G51/30 ,  C01G53/00 ,  C22B11/04 ,  C22B15/0089 ,  C22B15/0093 ,  C22B3/06 ,  C01P2006/80 ,  Y02P10/234 ,  Y02P10/236

    摘要： A method for selectively recovering metals from generally sulphidic particulate materials containing metals selected from nickel, copper and precious metals in which the particulate material is preferentially leached in an agitated chloride solution containing cuprous ions by the action of chlorine. The redox potential of the solution increases upon feeding chlorine thereto and decreases upon feeding particulate material thereto, and the rate of feeding of chlorine is controlled relative to the rate of feeding of material to control the redox potential substantially at or below a selected potential at which the metal is leached preferentially with respect to other metals in the material. Nickel is leached preferentially with respect to copper and precious metals in a matte, for example, to produce a nickel-rich solution and to concentrate the precious metals in a nickel-depleted residue. The leach residue, or other concentrates containing copper and precious metals may also be treated by the method to selectively dissolve the copper values preferentially to the precious metal values. Dissolved copper in the nickel-bearing leach solutions may be precipitated in a separate tank by agitating the leach solution in the presence of elemental sulphur and nickel sulphide particles having an atomic ratio of nickel to sulphur greater than one, thereby producing copper sulphide and a substantially copper-free nickel-chloride solution which can be separated and the values recovered by conventional means.

    摘要翻译： 从含有选自镍，铜和贵金属的金属的一般硫化颗粒材料中选择性地回收金属的方法，其中颗粒材料优选在氯的作用下在含有亚硝酸根的搅拌氯化物溶液中浸出。 当向其中供给氯时，溶液​​的氧化还原电位增加，并且在将颗粒材料送入其时降低，并且相对于材料的供给速率来控制氯的供给速率，以控制基本上等于或低于选定电位的氧化还原电位， 金属相对于材料中的其它金属优先浸出。 相对于铜和贵金属优选浸出镍，例如，以产生富镍溶液并将贵金属浓缩在镍贫的残余物中。 浸出残渣或含铜和贵金属的其他浓缩物也可以通过选择性地将铜值优先溶解到贵金属值的方法来处理。 在含镍浸出溶液中的溶解的铜可以通过在原子比为镍和硫大于1的元素硫和硫化镍颗粒的存在下搅拌浸出溶液而在单独的槽中沉淀，由此产生硫化铜和基本上 可以分离的无铜氯化镍溶液，通过常规方法回收值。

    Process for the recovery of copper
    12.
    发明授权
    Process for the recovery of copper 失效
    回收铜的工艺

    公开(公告)号：US3951649A

    公开(公告)日：1976-04-20

    申请号：US498422

    申请日：1974-08-19

    申请人： Olmedo Kieswetter, Jr. ,  Cedomir M. Sliepcevich

    发明人： Olmedo Kieswetter, Jr. ,  Cedomir M. Sliepcevich

    IPC分类号： C01G3/00 ,  C22B3/30 ,  C22B15/00

    CPC分类号： C22B3/0017 ,  C01G3/003 ,  C22B15/0069 ,  C22B15/0093 ,  Y02P10/234 ,  Y02P10/236 ,  Y10S210/912

    摘要： Metallic copper is recovered from raw materials containing copper in a chemically bound state by first leaching the copper-containing raw material with a ferric chloride solution to extract copper as copper chloride in aqueous solution. The copper is extracted from the copper chloride solution with a liquid ion exchanger which is then stripped with sulfuric acid to form a copper sulfate solution. Metallic copper is recovered from the copper sulfate solution by hydrometallurgical reduction of it with hydrogen gas. An iron chloride salt may be crystallized from the copper-free raffinate from the ion exchange step, and then roasted to yield ferric oxide and hydrochloric acid. The hydrochloric acid produced in the roasting step is electrolyzed to produce hydrogen gas and chlorine gas which can be used in the regeneration of the ferric chloride leach solution.

    摘要翻译： 通过首先用含氯化铜溶液浸提含铜原料，在含铜溶液中提取铜作为氯化铜，​​在化学结合状态的铜原料中回收金属铜。 铜从氯化铜溶液中用液体离子交换剂萃取，然后用硫酸汽提，形成硫酸铜溶液。 金属铜从硫酸铜溶液中回收，用氢气进行湿法还原。 可以从离子交换步骤的无铜萃余液中结晶出氯化铁盐，然后焙烧得到三氧化二铁和盐酸。 在焙烧步骤中产生的盐酸被电解以产生可用于再生氯化铁浸出溶液的氢气和氯气。

    Process for recovery of non-ferrous metals from oxide ores and concentrates
    13.
    发明授权
    Process for recovery of non-ferrous metals from oxide ores and concentrates 失效
    有色金属从氧化矿石和精矿中回收的工艺

    公开(公告)号：US3929468A

    公开(公告)日：1975-12-30

    申请号：US53822775

    申请日：1975-01-02

    申请人： US INTERIOR

    发明人： SIEMENS RICHARD E ,  GOOD PHILIP C

    IPC分类号： C22B5/12 ,  C22B15/00 ,  C22B23/00 ,  C22B47/00 ,  C22B23/04 ,  C22B15/10

    CPC分类号： C22B23/0446 ,  C22B5/12 ,  C22B15/0021 ,  C22B15/0078 ,  C22B15/0093 ,  C22B23/005 ,  C22B47/0027 ,  C22B47/0072 ,  Y02P10/236 ,  Y10S423/04

    摘要： Nickel, cobalt and copper are recovered from oxide ores and oxide ore concentrates, especially those ores and concentrates containing substantial amounts of iron oxides, by selectively reducing the non-ferrous metal oxides to their elemental state in the absence of water vapor at temperatures ranging from 350*C to 600*C using carbon monoxide as the sole reductant. The reduced ore is then cooled and subjected to an oxidizing leach using an aqueous ammonia-ammonium sulfate solution as the leaching medium. Leaching is controlled in such a fashion that the non-ferrous metals are oxidized and stabilized in solution as their ammine complexes prior to the occurrence of any substantial oxidation of ferrous iron to the ferric state. Non-ferrous metal values are then separately recovered from the leach solution by techniques such as solvent extraction and precipitation. The process allows recovery of more than 90% of the nickel and more than 85% of the cobalt from laterite ores.

    摘要翻译： 镍，钴和铜从氧化物矿石和氧化矿精矿中回收，特别是那些含有大量铁氧化物的矿石和精矿，通过选择性将有色金属氧化物还原为不含水蒸气的元素状态，温度范围从 350℃至600℃，使用一氧化碳作为唯一的还原剂。 然后将还原的矿石冷却，并使用氨 - 硫酸铵水溶液作为浸出介质进行氧化浸出。 浸出被控制为使得有色金属在将二氧化铁任何显着氧化成三价态之前被氧化并稳定在溶液中作为其氨络合物。 然后通过诸如溶剂萃取和沉淀的技术从浸出溶液中单独回收有色金属值。 该方法允许从红土矿中回收超过90％的镍和超过85％的钴。

    Recovery of metal values from ores
    14.
    发明授权
    Recovery of metal values from ores 失效
    从矿石中回收金属价值

    公开(公告)号：US3923616A

    公开(公告)日：1975-12-02

    申请号：US40248873

    申请日：1973-10-01

    申请人： DU PONT

    发明人： ATADAN ERDEM M ,  COFFEY CHARLES E

    IPC分类号： C22B15/00 ,  C25C1/12 ,  C01G3/04

    CPC分类号： C22B15/0093 ,  C22B15/0069 ,  Y02P10/236

    摘要： Metal values, e.g. copper, are extracted from sulfide ores, e.g. chalcopyrite, by leaching the ore in one or more stages with an aqueous solution containing iron ions and sufficient chloride ions to maintain the desired metal values in solution at a temperature of at least 80*C. with an oxygen-containing gas intimately dispersed in the solution preferably at a pressure of at least 75 psia.

    摘要翻译： 金属值，例如 铜从硫化矿石中提取，例如 黄铜矿，通过用含有铁离子和足够的氯离子的水溶液在一个或多个阶段浸出矿石，以将溶液中所需的金属值在至少80℃的温度下与含氧气体密切分散在 溶液优选在至少75psia的压力下。

    Pressure cementation process for recovery of copper from solution
    15.
    发明授权
    Pressure cementation process for recovery of copper from solution 失效
    用于从溶液中回收铜的压力胶结过程

    公开(公告)号：US3877932A

    公开(公告)日：1975-04-15

    申请号：US44457574

    申请日：1974-02-21

    申请人： US INTERIOR

    发明人： ELGES III CARL H

    IPC分类号： C22B3/46 ,  C22B15/00 ,  C22B15/12

    CPC分类号： C22B3/46 ,  C22B15/0091 ,  C22B15/0093 ,  Y02P10/234 ,  Y02P10/236

    摘要： Copper is recovered from acidic aqueous solutions containing cupric, ferric, ferrous and other ions by a cementation reaction with elemental iron. The cementation step is performed under hydrogen pressure which minimizes iron consumption and allows the cementation treatment of highly acidic solutions.

    摘要翻译： 通过与元素铁的胶结反应，从含有铜，铁，亚铁和其他离子的酸性水溶液中回收铜。 胶结步骤在氢气压力下进行，使铁消耗最小化，并允许高酸性溶液的胶结处理。