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    Process for recovering aluminum from alunite
    1.
    发明授权
    Process for recovering aluminum from alunite 失效
    从铝酸钠中回收铝的工艺

    公开(公告)号：US4057611A

    公开(公告)日：1977-11-08

    申请号：US801744

    申请日：1977-05-31

    申请人： Larry D. Jennings ,  Wayne W. Hazen

    发明人： Larry D. Jennings ,  Wayne W. Hazen

    IPC分类号： C01F7/06 ,  C01F7/02

    CPC分类号： C01F7/0686

    摘要： An improvement in the process for the recovery of aluminum from alunite in which the alunite in particulate form is dehydrated, sulfur and alkali metal compounds removed from the dehydrated ore leaving a particulate residue containing aluminum values, the residue digested with at least one alkali metal hydroxide to convert the aluminum values to soluble aluminates, silicon removed from the soluble aluminate solution, and aluminum values precipitated from the aluminate solution, the improvement comprising: multiple stage digestion of the particulate residue accomplished by dividing the particulate residue into two fractions, digesting one fraction first and using the first stage liquor from the first digestion step to digest the remaining fraction. The fraction digested first may be the one having the smaller particle size, or the one having the larger particle size. The objective is to contact the caustic digestion liquor at its lowest aluminum content (lowest A/C ratio) with that fraction of the residue having the highest extractable aluminum content. The result is the production of a liquor for final recovery of aluminum values which has a higher aluminum to caustic ratio than that produced by prior digestion procedures. The improvement provides a higher recovery of aluminum from the alunite ore.

    摘要翻译： 从其中脱水的颗粒形式的褐煤矿的铝酸钠回收铝的方法的改进，从脱水矿石中除去硫和碱金属化合物，留下含有铝的颗粒残渣，残余物用至少一种碱金属氢氧化物 将铝值转化成可溶性铝酸盐，从可溶性铝酸盐溶液中除去的硅和从铝酸盐溶液中析出的铝值，其改进包括：通过将颗粒残余物分成两部分来消化颗粒残留物进行多级消化，消化一个馏分 首先使用来自第一消化步骤的第一级液体来消化剩余部分。 首先消化的馏分可以是具有较小粒度的馏分，或具有较大颗粒尺寸的馏分。 目的是以最低铝含量（最低A / C比）与苛性碱消解液接触，其中残余物中可提取铝含量最高的部分。 结果是生产一种最终回收铝值的液体，其具有比先前消化程序产生的更高的铝与苛性碱比。 该改进提供了从铝酸钙矿石中更高的铝回收率。

    SYSTEM AND METHOD INCLUDING MULTI-CIRCUIT SOLUTION EXTRACTION FOR RECOVERY OF METAL VALUES FROM METAL-BEARING MATERIALS
    2.
    发明申请
    SYSTEM AND METHOD INCLUDING MULTI-CIRCUIT SOLUTION EXTRACTION FOR RECOVERY OF METAL VALUES FROM METAL-BEARING MATERIALS 有权
    包括用于从金属轴承材料回收金属值的多电路解决方案提取的系统和方法

    公开(公告)号：US20130152741A1

    公开(公告)日：2013-06-20

    申请号：US13331717

    申请日：2011-12-20

    申请人： Jason M. Morgan ,  Barbara J. Savage ,  David G. Meadows ,  Wayne W. Hazen

    发明人： Jason M. Morgan ,  Barbara J. Savage ,  David G. Meadows ,  Wayne W. Hazen

    IPC分类号： C22B5/00 ,  C22B3/20 ,  C22B3/02 ,  C25C7/00

    CPC分类号： C22B3/02 ,  B01D11/028 ,  B01D11/0488 ,  C22B3/0005 ,  C22B3/20 ,  C22B3/44 ,  C25C7/00 ,  Y02P10/234

    摘要： The present disclosure relates to a metal recovery process comprising a solvent extraction process. In an exemplary embodiment, the solution extraction system comprises a plant with a first and second circuit. A high-grade pregnant leach solution (“HGPLS”) is provided to the first and second circuit, and a low-grade pregnant leach solution (“LGPLS”) is provided to the second circuit. The first circuit produces a rich electrolyte, which can be forwarded to a primary metal recovery, and a low-grade raffinate, which can be forwarded to a secondary metal recovery process. The second circuit produces a rich electrolyte, which can also be forwarded to the primary metal recovery process. The first and second circuits are in fluid communication with each other.

    摘要翻译： 本发明涉及包含溶剂萃取方法的金属回收方法。 在示例性实施例中，溶液提取系统包括具有第一和第二回路的设备。 向第一和第二回路提供高品位的浸出液（“HGPLS”），并向第二回路提供低等级的浸出液（“LGPLS”）。 第一个电路产生富电解质，可以将其转化为初级金属回收，还可以将低级提余液转入二次金属回收工艺。 第二电路产生富电解质，其也可以转发到初级金属回收过程。 第一和第二回路彼此流体连通。

    CONTROLLED COPPER LEACH RECOVERY CIRCUIT
    3.
    发明申请
    CONTROLLED COPPER LEACH RECOVERY CIRCUIT 有权
    控制铜浸漏恢复电路

    公开(公告)号：US20120060651A1

    公开(公告)日：2012-03-15

    申请号：US13302369

    申请日：2011-11-22

    申请人： Barbara J. Savage ,  David G. Meadows ,  Wayne W. Hazen

    发明人： Barbara J. Savage ,  David G. Meadows ,  Wayne W. Hazen

    IPC分类号： C22B11/00 ,  C22B3/26 ,  C22B5/00 ,  C22B3/20

    CPC分类号： C22B3/0005 ,  C22B3/20 ,  C22B15/0071 ,  C22B15/0084 ,  C22B15/0095 ,  Y02P10/234 ,  Y02P10/236

    摘要： The present invention relates generally to a process for controlled leaching and sequential recovery of two or more metals from metal-bearing materials. In one exemplary embodiment, recovery of metals from a leached metal-bearing material is controlled and improved by providing a high grade pregnant leach solution (“HGPLS”) and a low grade pregnant leach solution (“LGPLS”) to a single solution extraction plant comprising at least two solution extractor units, at least two stripping units, and, optionally, at least one wash stage.

    摘要翻译： 本发明一般涉及从含金属材料中控制浸出和连续回收两种或更多种金属的方法。 在一个示例性实施方案中，通过向单一溶液提取设备提供高等级的浸出液（“HGPLS”）和低等级的浸出液（“LGPLS”）来控制和改善来自浸出的含金属材料的金属的回收 包括至少两个溶液提取器单元，至少两个剥离单元，以及任选的至少一个洗涤阶段。

    Silica removal from pregnant leach solutions
    4.
    发明授权
    Silica removal from pregnant leach solutions 失效
    从怀孕浸出液中除去二氧化硅

    公开(公告)号：US08114365B2

    公开(公告)日：2012-02-14

    申请号：US12718796

    申请日：2010-03-05

    申请人： James D. Gillaspie ,  David R. Baughman ,  Dennis D. Gertenbach ,  Wayne W. Hazen ,  George Owusu ,  John C. Wilmot

    发明人： James D. Gillaspie ,  David R. Baughman ,  Dennis D. Gertenbach ,  Wayne W. Hazen ,  George Owusu ,  John C. Wilmot

    IPC分类号： C22B3/20

    CPC分类号： C22B3/44 ,  C22B3/20 ,  C22B15/0071 ,  C22B15/0089 ,  Y02P10/234 ,  Y02P10/236

    摘要： The present invention relates generally to a process for removing dissolved or colloidal silica from a pregnant leach solution (“PLS”). More particularly, an exemplary embodiment of the present invention relates to a process which mixes PLS with an acid source, preferably lean electrolyte, to induce formation of colloidal silica that can then be collected and removed. Additionally, in an exemplary embodiment of the present invention, at least one silica seeding agent is added to induce formation of colloidal silica, at least one flocculant is added to induce aggregation of the colloidal silica, and a solid-liquid separation process is utilized to remove advantageous amounts or substantially all of the colloidal silica, thereby providing relief from supersaturation of dissolved silica in the metal recovery processes.

    摘要翻译： 本发明一般涉及从怀孕浸出溶液（“PLS”）中除去溶解或胶体二氧化硅的方法。 更具体地，本发明的示例性实施方案涉及将PLS与酸源（优选贫电解质）混合以诱导形成胶体二氧化硅的方法，然后可以收集和去除胶体二氧化硅。 此外，在本发明的一个示例性实施方案中，加入至少一种二氧化硅接种剂以诱导胶态二氧化硅的形成，加入至少一种絮凝剂以诱导胶体二氧化硅的聚集，并且使用固液分离方法 去除有利的量或基本上所有的胶态二氧化硅，从而在金属回收方法中提供了溶解二氧化硅过饱和的缓解。

    Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solution extraction
    5.
    发明授权
    Process for recovery of copper from copper-bearing material using pressure leaching, direct electrowinning and solution extraction 失效
    使用压力浸出，直接电解提取和溶液萃取从含铜材料回收铜的工艺

    公开(公告)号：US07736487B2

    公开(公告)日：2010-06-15

    申请号：US11743034

    申请日：2007-05-01

    申请人： John O. Marsden ,  John C. Wilmot ,  Christy Green ,  Wayne W. Hazen ,  David R. Baughman

    发明人： John O. Marsden ,  John C. Wilmot ,  Christy Green ,  Wayne W. Hazen ,  David R. Baughman

    IPC分类号： C25C1/00

    CPC分类号： C25C1/12 ,  C22B3/0005 ,  C22B15/0071 ,  C22B15/0084 ,  Y02P10/234 ,  Y02P10/236

    摘要： The present invention relates generally to a process for recovering copper and/or other metal values from a metal-bearing ore, concentrate, or other metal-bearing material using pressure leaching and direct electrowinning. More particularly, the present invention relates to a substantially acid-autogenous process for recovering copper from chalcopyrite-containing ore using pressure leaching and direct electrowinning in combination with a leaching, solvent/solution extraction and electrowinning operation. In accordance with one aspect of the process, at least a portion of the residue from the pressure leaching operation is directed to a heap, stockpile or other leaching operation.

    摘要翻译： 本发明一般涉及使用压力浸出和直接电解冶金从含金矿石，浓缩物或其它含金属材料中回收铜和/或其它金属值的方法。 更具体地说，本发明涉及使用压力浸出和直接电解提取与浸出，溶剂/溶液萃取和电解提取操作相结合的从含黄铜矿的矿石中回收铜的基本上酸 - 自生成的方法。 根据该方法的一个方面，来自压力浸出操作的残余物的至少一部分被引导到堆，堆料或其它浸出操作。

    Process for multiple stage direct electrowinning of copper
    6.
    发明授权
    Process for multiple stage direct electrowinning of copper 失效
    铜的多级直接电解冶金工艺

    公开(公告)号：US07476308B2

    公开(公告)日：2009-01-13

    申请号：US10976481

    申请日：2004-10-29

    申请人： John O. Marsden ,  Robert E. Brewer ,  Joanna M. Robertson ,  David R. Baughman ,  Phillip Thompson ,  Wayne W. Hazen ,  Christel M. A. Bemelmans

    发明人： John O. Marsden ,  Robert E. Brewer ,  Joanna M. Robertson ,  David R. Baughman ,  Phillip Thompson ,  Wayne W. Hazen ,  Christel M. A. Bemelmans

    IPC分类号： C25C1/12

    CPC分类号： C22B15/0004 ,  C22B15/0071 ,  C22B15/0089 ,  Y02P10/236

    摘要： A system and process for recovering copper from a copper-containing ore, concentrate, or other copper-bearing material to produce high quality cathode copper from a leach solution without the use of copper solvent/solution extraction techniques or apparatus. A process for recovering copper from a copper-containing ore generally includes the steps of providing a feed stream containing comminuted copper-containing ore, concentrate, or other copper-bearing material, leaching the feed stream to yield a copper-containing solution, conditioning the copper-containing solution through one or more physical or chemical conditioning steps, and electrowinning copper directly from the copper-containing solution in multiple electrowinning stages, without subjecting the copper-containing solution to solvent/solution extraction prior to electrowinning.

    摘要翻译： 一种用于从含铜矿石，浓缩物或其它含铜材料中回收铜的系统和方法，以从浸出溶液中生产高质量的阴极铜，而不使用铜溶剂/溶液萃取技术或装置。 从含铜矿石中回收铜的方法通常包括提供含有粉碎的含铜矿石，浓缩物或其它含铜材料的进料流的步骤，浸提进料流以产生含铜溶液，调理 通过一个或多个物理或化学调节步骤的含铜溶液，以及在多个电解提取阶段直接从含铜溶液中电解提取铜，而在电解提取之前不对含铜溶液进行溶剂/溶液萃取。

    Method for improving metals recovery using high temperature pressure leaching
    9.
    发明授权
    Method for improving metals recovery using high temperature pressure leaching 有权
    使用高温浸出提高金属回收率的方法

    公开(公告)号：US07517384B2

    公开(公告)日：2009-04-14

    申请号：US11551907

    申请日：2006-10-23

    申请人： John O. Marsden ,  Robert E. Brewer ,  Joanna M. Robertson ,  David R. Baughman ,  Philip Thompson ,  Wayne W. Hazen ,  Roland Schmidt

    发明人： John O. Marsden ,  Robert E. Brewer ,  Joanna M. Robertson ,  David R. Baughman ,  Philip Thompson ,  Wayne W. Hazen ,  Roland Schmidt

    IPC分类号： C22B3/04

    CPC分类号： C22B3/08 ,  C22B3/0005 ,  C22B11/04 ,  C22B11/08 ,  C22B15/0067 ,  C22B15/0071 ,  C22B15/0086 ,  C22B15/0089 ,  Y02P10/234 ,  Y02P10/236

    摘要： The present invention is directed to a system for recovering metal values from metal-bearing materials. During a reactive process, a seeding agent is introduced to provide a nucleation site for the crystallization and/or growth of solid species which otherwise tend to passivate the reactive process or otherwise encapsulate the metal value, thereby reducing the amount of desired metal values partially or completely encapsulated by such material. The seeding agent may be generated in a number of ways, including the recycling of residue or the introduction of foreign substances. Systems embodying aspects of the present invention may be beneficial for recovering a variety of metals such as copper, gold, silver, nickel, cobalt, molybdenum, zinc, rhenium, uranium, rare earth metals, and platinum group metals from any metal-bearing material, such as ores and concentrates.

    摘要翻译： 本发明涉及一种用于从含金属材料中回收金属值的系统。 在反应过程中，引入接种剂以提供固体物质的结晶和/或生长的成核位点，否则其倾向于钝化反应过程或以其他方式包封金属值，从而部分或者部分地减少所需金属值的量 完全被这种材料包住。 接种剂可以以多种方式产生，包括残留物的再循环或引入异物。 体现本发明方面的体系可能有益于从任何含金属材料中回收各种金属如铜，金，银，镍，钴，钼，锌，铼，铀，稀土金属和铂族金属 ，如矿石和精矿。