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73 条记录 (耗时 0.027 秒)

    Method of recycling Cd-112 isotope
    3.
    发明授权
    Method of recycling Cd-112 isotope 有权

    公开(公告)号：US08043584B2

    公开(公告)日：2011-10-25

    申请号：US11812984

    申请日：2007-06-22

    申请人： Wuu-Jyh Lin ,  Song-Un Tang

    发明人： Wuu-Jyh Lin ,  Song-Un Tang

    IPC分类号： C22B17/00

    CPC分类号： C01G11/00

    摘要： Cd-112 isotope is recycled from a Cd-112 chemical separated solution or a remainder of an electroplating solution having a Cd-112 target. The present invention recycles Cd-112 isotope with a low cost, a high purity and a high recycle rate. The recycled Cd-112 isotope can be easily stored. And, the Cd-112 isotope can be used as an imaging agent in nuclear medicine.

    Process to produce simonkolleite, zinc oxide and zinc hydroxide
    5.
    发明授权
    Process to produce simonkolleite, zinc oxide and zinc hydroxide 失效
    生产堇青石，氧化锌和氢氧化锌的方法

    公开(公告)号：US06863873B1

    公开(公告)日：2005-03-08

    申请号：US10669146

    申请日：2003-09-23

    申请人： Loren P. Hoboy ,  Nick A. Wolf ,  Tonya F. Yoder

    发明人： Loren P. Hoboy ,  Nick A. Wolf ,  Tonya F. Yoder

    IPC分类号： C22B3/04 ,  C22B3/46 ,  C22B7/00 ,  C22B7/02 ,  C22B15/00 ,  C22B17/00 ,  C22B19/00 ,  C22B19/34 ,  C22B25/00

    CPC分类号： C22B7/006 ,  C22B3/10 ,  C22B3/46 ,  C22B7/02 ,  C22B19/26 ,  C22B19/34 ,  Y02P10/234 ,  Y02P10/236

    摘要： A hydrometallurgical process utilizing an atmospheric calcium chloride leach to selectively recover from various metal feed stocks (consisting of elemental metals, metal oxides, metal ferrite, metal hydroxide, metal carbonates, metal sulfate/sulfur compounds, and their hydrates, specifically including but not limited to EAF Dust K061) zinc, lead, cadmium, silver, copper and other valuable metals to the exclusion of iron, magnesium, halogen salts and other unwanted elements. The process solves the problem of iron and magnesium leach solution contamination because iron is unexpectedly converted to magnetite. The heavy metals are cemented out of solution using zinc or other selected dust at a pH of 6 or greater under unique and unexpected conditions, which do not require acid. Simonkolleite/zinc- oxychloride/zinc-hydroxide is produced from the purified zinc chloride complex pregnant leach solution and is converted directly to high purity active rubber grade 99+% zinc oxide having small particle size and high surface area. The products are metal concentrates suitable for: metal refiner/processors, production of elemental metal, or other conversion processes. The process removes Arsenic and Fluorides in the feed material. The process also solves the problem of chloride contamination in the zinc oxide and prevents heavy metal contaminants in the hydrometallurgically produced zinc oxide derived from feed stocks containing chlorides or when chlorides are used to leach the metal bearing feed stocks. In one embodiment, calcium and/or magnesium compounds are added to the iron bearing waste to increase the recovery of zinc and other non-ferrous metals and to produce an iron bearing flux. The process is environmentally friendly and fully recycles all streams.

    摘要翻译： 使用大气氯化钙浸出物从各种金属原料（由元素金属，金属氧化物，金属铁氧体，金属氢氧化物，金属碳酸盐，金属硫酸盐/硫化合物及其水合物组成的湿法冶金方法），具体包括但不限于 对EAF粉尘K061）锌，铅，镉，银，铜等有价值金属排除铁，镁，卤素盐等不需要的元素。 该过程解决了铁和镁浸出液污染的问题，因为铁意外地转化为磁铁矿。 在不需要酸的独特和意想不到的条件下，使用锌或其他选择的灰尘在6或更高的pH下将重金属从溶液中胶结出来。 Simonkolleite /氯氧化锌/氢氧化锌由纯化的氯化锌络合物浸出溶液生产，直接转化为具有小粒径和高表面积的高纯度活性橡胶级99 +％氧化锌。 该产品是适用于金属精炼机/加工机，元素金属生产或其他转化工艺的金属精矿。 该方法可以去除原料中的砷和氟。 该方法还解决了氧化锌中氯化物污染的问题，并防止了来自含有氯化物的原料的湿法冶金生产的氧化锌中的重金属污染物，或者当使用氯化物浸出含金属的原料时。 在一个实施方案中，将钙和/或镁化合物加入含铁废料中以增加锌和其它有色金属的回收率并生产含铁助熔剂。 这个过程是环保的，完全循环利用所有的流。

    Membrane processes for metal recovery and pollution control in metal process industries
    8.
    发明授权
    Membrane processes for metal recovery and pollution control in metal process industries 失效
    金属加工工业中金属回收和污染控制的膜工艺

    公开(公告)号：US4655928A

    公开(公告)日：1987-04-07

    申请号：US543191

    申请日：1983-10-18

    申请人： Everett C. Milton ,  Harry P. Gregor

    发明人： Everett C. Milton ,  Harry P. Gregor

    IPC分类号： C02F1/44 ,  B01D61/44 ,  C02F1/469 ,  C02F1/62 ,  C02F9/00 ,  C22B7/00 ,  C22B13/00 ,  C22B15/00 ,  C22B17/00 ,  C22B23/00 ,  C22B26/10 ,  C23F1/46 ,  H01M10/54 ,  B01D13/00

    CPC分类号： H01M10/54 ,  B01D61/58 ,  C02F9/00 ,  C22B13/04 ,  C22B15/0086 ,  C22B17/04 ,  C22B23/0453 ,  C22B26/10 ,  C22B7/006 ,  B01D2311/2642 ,  B01D61/025 ,  B01D61/445 ,  C02F2101/20 ,  Y02P10/234 ,  Y02P10/236 ,  Y02W30/84

    摘要： A process for the treatment of an aqueous stream containing an acid or base and typically a precipitatable material such as a metal ion comprises:(a) subjecting the aqueous stream to (i) a treatment to produce a relatively pure stream of water and a concentrated aqueous stream, and (ii) water splitting to produce a stream of base, a stream of acid and a dilute aqueous stream of a concentration lower than the concentrated aqueous stream, the treatments (i) and (ii) being effected in either order,(b) recycling at least part of the pure water stream produced in (a)(i) to an earlier stream either in the production leading to said aqueous stream or to step (i) or (ii),(c) recycling at least part of the acid and/or base streams produced in (a)(ii) to an earlier stream either in the production leading to said aqueous stream or to an earlier step in the process, and(d) recycling at least part of the lower concentration stream produced in (a)(ii) to either (a)(i) or to another step in the process, whereby, when present, only the precipitatable material is removed from the aqueous stream, thereby obviating toxic waste disposal problems.

    摘要翻译： 用于处理含有酸或碱和典型的可沉淀物质如金属离子的含水流的方法包括：（a）使水流经受（i）处理以产生相对纯的水流和浓缩的 水流，和（ii）水分解以产生碱流，酸流和浓度低于浓缩水流的稀水流，处理（i）和（ii）以任何顺序进行， （b）将（a）（i）中生产的纯水流中的至少一部分再循环到生产过程中的较早的流中，或者在步骤（i）或（ii）中，（c）至少再循环 （a）（ii）中生产的一部分酸和/或碱性物流在生产过程中，或者在生产过程中的较早阶段，或（d）回收至少一部分较低的 （a）（ii）中产生的（a）（i）或（p）中的另一步骤产生的浓缩物流 由此，当存在时，只有可沉淀物质从水流中除去，从而避免有毒废物处理问题。

    Refining of ferrous and base metal sulphide ores and concentrates
    10.
    发明授权
    Refining of ferrous and base metal sulphide ores and concentrates 失效
    铁和硫化金矿石和精矿的精炼

    公开(公告)号：US4148698A

    公开(公告)日：1979-04-10

    申请号：US782178

    申请日：1977-03-28

    申请人： Peter K. Everett

    发明人： Peter K. Everett

    IPC分类号： C22B13/00 ,  C22B3/00 ,  C22B3/04 ,  C22B3/10 ,  C22B7/00 ,  C22B17/00 ,  C22B19/00 ,  C22B19/20 ,  C25C1/16 ,  C25C1/18

    CPC分类号： C22B13/04 ,  C22B19/20 ,  C22B3/10 ,  Y02P10/234

    摘要： The invention provides a process for extracting a base metal from a base metal bearing ore or concentrate which includes forming a slurry of the ore or concentrate with an electrolyte containing chloride ions and copper ions, oxygenating the mixture and maintaining the pH of the mixture from 1.5 to 7.0. Iron impurities will be substantially precipitated as ferric oxide and may be recovered, sulphide sulphur will be converted to elemental form and can be recovered and the base metal is taken into solution. The base metal can be recovered by electrolysis which can also produce hydrogen ions for pH maintenance. The copper ions can be precipitated by the addition of fresh ore or concentrate and can be recycled. The process is preferably carried out in a counter-current manner in which electrolyte containing increasing amounts of the base metal in solution is conveyed counter-current to solids which decrease in base metal content. The process is particularly applicable to lead, zinc or lead-zinc ores or concentrates.

    摘要翻译： 本发明提供了一种从含贱金属矿石或浓缩物中提取贱金属的方法，包括用含有氯离子和铜离子的电解质形成矿石或浓缩物的浆料，使混合物充氧并将混合物的pH值保持在1.5 到7.0。 铁杂质将作为氧化铁基本上沉淀出来，可以回收，硫化物硫将转化为元素形式，并可以回收，并将贱金属溶解。 贱金属可以通过电解回收，这也可以产生氢离子用于pH维持。 铜离子可以通过添加新鲜矿石或浓缩物而沉淀，并可以回收利用。 该方法优选以逆流方式进行，其中含有增加量的溶液中的贱金属的电解液逆向流向降低贱金属含量的固体。 该方法特别适用于铅，锌或铅锌矿石或精矿。