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    Cobalt ion exchange process
    41.
    发明授权
    Cobalt ion exchange process 失效
    钴离子交换过程

    公开(公告)号：US4042665A

    公开(公告)日：1977-08-16

    申请号：US726994

    申请日：1976-09-27

    申请人： William Ronald Hatch

    发明人： William Ronald Hatch

    IPC分类号： C22B23/00 ,  C01G51/12 ,  C22B47/00 ,  C22B23/04

    CPC分类号： C22B23/0461 ,  C22B3/24 ,  C22B3/42 ,  C22B47/0081 ,  C22B47/009 ,  Y02P10/234

    摘要： There is provided a cobalt ion exchange process for recovering cobalt from ammoniacal solutions comprising the steps of bringing the ammoniacal solution into contact with carbonaceous material, the redox potential of the solution being in the range +20 to -150 mV as measured by a platinum-calomel standard electrode pair, extracting the cobalt from the leach solution with a cationic ion exchange reagent, and recovering substantially all the cobalt from the ion exchange reagent by elution. The process of the invention enables cobalt to be removed from an ammoniacal leach solution which may also contain nickel and copper, in the form of a highly pure cobalt eluate.

    摘要翻译： 提供了用于从氨溶液中回收钴的钴离子交换方法，其包括使氨溶液与碳质材料接触的步骤，溶液的氧化还原电位在+ 20至-150mV范围内， 甘汞标准电极对，用阳离子交换剂从浸出溶液中提取钴，并通过洗脱从离子交换剂中回收基本上所有的钴。 本发明的方法使钴能够从高纯度的钴洗脱液形式的含有镍和铜的氨浸出溶液中除去。

    Low temperature and pressure continuous reduction of copper in acid solutions
    42.
    发明授权
    Low temperature and pressure continuous reduction of copper in acid solutions 失效
    低温和压力连续降低酸解决方案中的铜

    公开(公告)号：US4038070A

    公开(公告)日：1977-07-26

    申请号：US695390

    申请日：1976-06-14

    申请人： Alkis S. Rappas ,  J. Paul Pemsler

    发明人： Alkis S. Rappas ,  J. Paul Pemsler

    IPC分类号： C22B15/00 ,  C22B47/00 ,  C22B15/12

    CPC分类号： C22B15/0089 ,  C22B15/0093 ,  C22B47/0081 ,  Y02P10/236

    摘要： Copper values are recovered from an acidic solution of solubilized cupric ions by the reduction of cupric copper to cuprous copper with hydrogen gas in the presence of a solid hydrogenation catalyst and in the presence of a cuprous ion stabilizing ligand. Catalyst poisoning by precipitation of copper metal on the surface of the catalyst during the reduction is avoided by controlling the ratio of Cu.sup.+/ligand/Cu.sup.+.sup.+ and by terminating the hydrogenation before copper metal precipitates on the catalyst. The solution containing the cuprous ions is separated from the solid catalyst and the cuprous ions are then disproportionated to produce copper metal and cupric ions.The removal of the last amounts of cupric ions from solutions, after several stages of reduction and disproportionation is achieved by allowing the cupric ions to precipitate on the catalyst as copper metal. The catalyst is then separated from the copper barren raffinate and regenerated by exposing it to a fresh pregnant cupric ion solution in the presence of a cuprous ion stabilizing ligand.

    Extracting metal values from manganiferous ocean nodules
    43.
    发明授权
    Extracting metal values from manganiferous ocean nodules 失效
    从锰矿海洋结节中提取金属值

    公开(公告)号：US4026773A

    公开(公告)日：1977-05-31

    申请号：US648927

    申请日：1976-01-14

    申请人： Antoine L. Van Peteghem

    发明人： Antoine L. Van Peteghem

    IPC分类号： B01D11/04 ,  C22B3/00 ,  C22B3/04 ,  C22B15/00 ,  C22B23/00 ,  C22B34/00 ,  C22B47/00 ,  C01G51/00 ,  C01G45/02 ,  C01G53/00 ,  C25C1/12

    CPC分类号： C22B15/0069 ,  C22B15/0093 ,  C22B47/0063 ,  C22B47/0081 ,  Y02P10/236 ,  Y10S423/04

    摘要： Metal values are extracted from manganiferous ocean floor nodule ore by treating the ore with hydrochloric acid, thereby producing chlorine and a starting pulp containing a solution of the metal chlorides and a solid residue. The starting pulp is subjected to at least two subsequent acidifications with HCl, each acidification being followed by addition of fresh ore, thereby producing chlorine and a final pulp containing a concentrated solution of metal chlorides and a solid residue. The solid residue is separated from the concentrated solution and substantially all the metal values, except manganese and alkali and alkaline earth metals, are separated from the solution. The manganese is separated from the solution by treatment with chlorine, at least the major portion of which was produced in the preceding leaching steps, while maintaining the solution at a pH of between about 3 and 7 by addition of a neutralizing agent such as MgO or Mg(OH).sub.2 whereby the manganese is precipitated in the form of MnO.sub.(1.sub.+x) in which x is between 0.5 and 0.7. The manganiferous precipitate is separated from the resulting solution of magnesium chloride and the latter is pyrohydrolysed in the atomized state to regenerate the neutralizing agent and HCl, which can be recycled.

    摘要翻译： 通过用盐酸处理矿石，从锰矿海底结核矿石中提取金属值，从而产生氯和含有金属氯化物和固体残渣的溶液的起始纸浆。 起始纸浆经HCl至少两次随后的酸化，每次酸化后，加入新鲜矿石，从而产生氯和含有金属氯化物和固体残余物浓缩溶液的最终纸浆。 将固体残余物与浓缩溶液分离，除了锰和碱金属和碱土金属之外，基本上所有的金属值都与溶液分离。 通过用氯处理将锰从溶液中分离出来，其中至少其主要部分在前面的浸出步骤中产生，同时通过加入中和剂例如MgO或其它溶液将溶液保持在约3和7之间的pH Mg（OH）2，由此锰以MnO（1 + x）的形式沉淀，其中x在0.5和0.7之间。 从得到的氯化镁溶液中分离锰矿沉淀物，并将其以雾化状态进行热解，以再生中和剂和HCl，其可再循环。

    Metal carbonate recycle to reduction circuit in the cuprion process
    44.
    发明授权
    Metal carbonate recycle to reduction circuit in the cuprion process 失效
    金属碳酸盐循环到铜锅炉中的还原回路

    公开(公告)号：US4018866A

    公开(公告)日：1977-04-19

    申请号：US628354

    申请日：1975-11-03

    申请人： Lester J. Szabo

    发明人： Lester J. Szabo

    IPC分类号： C01G3/00 ,  C22B3/14 ,  C22B3/30 ,  C22B15/00 ,  C22B34/34 ,  C22B47/00 ,  C01G3/14 ,  C01G51/12 ,  C01G53/12

    CPC分类号： C01G3/003 ,  C22B15/0078 ,  C22B15/0089 ,  C22B3/0017 ,  C22B3/14 ,  C22B34/34 ,  C22B47/0072 ,  C22B47/0081 ,  Y02P10/234 ,  Y02P10/236 ,  Y10S423/04

    摘要： A process in which copper, nickel, cobalt and molybdenum are recovered by direct leaching of comminuted raw manganese nodules after the nodules are reduced in a reduction circuit with an aqueous ammoniacal leach solution containing cuprous ions. An improvement is disclosed which results from recycling a portion of the metal values recovered back to the reduction circuit as a solid basic metal carbonate. The metal carbonate recycle enables the size of the reactors in the reduction circuit to be reduced. The recycle also increases the efficiency of the process by facilitating the solubilization of copper. Another aspect of the invention resides in the advantages of maintaining solubilized copper in amounts between 10 grams per liter and the solubility limit in the reduction circuit.

    摘要翻译： 通过在含有亚硝酸根离子的含水硝酸溶液的还原回路中还原结节之后，通过直接浸出粉碎的原生锰结节回收铜，镍，钴和钼的方法。 公开了一种改进，其通过将作为固体碱性金属碳酸盐回收的一部分回收到还原回路的金属值进行再循环。 金属碳酸盐循环使得还原回路中的反应器的尺寸减小。 通过促进铜的溶解，再循环也提高了工艺的效率。 本发明的另一方面在于将溶解的铜保持在10克/升和还原回路中的溶解度极限之间的优点。

    Elevated pressure operation in the cuprion process
    48.
    发明授权
    Elevated pressure operation in the cuprion process 失效
    铜罐工艺中的高压操作

    公开(公告)号：US3988416A

    公开(公告)日：1976-10-26

    申请号：US479153

    申请日：1974-06-13

    申请人： Herbert E. Barner ,  Roger N. Kust ,  Robert P. Cox

    发明人： Herbert E. Barner ,  Roger N. Kust ,  Robert P. Cox

    IPC分类号： C22B3/14 ,  C22B3/30 ,  C22B15/00 ,  C22B34/34 ,  C22B47/00 ,  C01G3/14 ,  C01G39/00 ,  C01G51/12 ,  C01G53/12

    CPC分类号： C22B47/0072 ,  C22B15/0078 ,  C22B15/0093 ,  C22B3/0017 ,  C22B3/14 ,  C22B34/34 ,  C22B47/00 ,  C22B47/0081 ,  Y02P10/234 ,  Y02P10/236 ,  Y10S423/04

    摘要： A process in which copper, nickel, cobalt and molybdenum are recovered by direct leaching of comminuted raw manganese nodules with an aqueous ammoniacal leach solution containing cuprous ions. During the process cuprous ions are consumed and are oxidized to cupric ions. The cuprous ions are regenerated by reducing the cupric ions with a reducing gas. An improvement is disclosed which results from increasing the pressure of the reducing gas. This increased pressure facilitates maintaining a high cuprous ion concentration in each reaction vessel, by increasing the rate at which the cuprous ions are regenerated from the cupric ions without affecting the rate at which the metal values are recovered from the nodules, which in turn, increases the efficiency of each reactor thus enabling the size of reactors to be reduced.In one important embodiment of the invention, the reducing gas is sparged into a series of reaction vessels at increased pressure while the manganese nodules are injected into several vessels simultaneously. This increased pressure of the reducing gas together with the multiple point injection of the manganese nodules greatly increases the efficiency of the process.In another important embodiment of the invention as the reducing gas is sparged into the reaction vessels under increased pressure sufficient heat is removed from the slurry leaving each reaction vessel so that all reaction vessels operate at substantially the same temperature within the range of 35.degree.-55.degree. C. By operating within this temperature range, nickel and cobalt solubilization within the reaction vessels is improved.

    摘要翻译： 通过用含有亚硝酸根离子的含水硝酸溶液直接浸出粉碎的原生锰结核来回收铜，镍，钴和钼的方法。 在该过程中，亚铜离子被消耗并被氧化成铜离子。 通过用还原气体还原铜离子来再生​​亚铜离子。 公开了通过增加还原气体的压力导致的改进。 这种增加的压力有助于在每个反应容器中保持高的亚硝酸根离子浓度，通过增加从铜离子再生出亚铜离子的速率，而不影响金属值从结节中回收的速率， 因此每个反应器的效率使得能够减小反应器的尺寸。