公开(公告)号：US5124051A

公开(公告)日：1992-06-23

申请号：US619573

申请日：1990-11-29

申请人： Keith G. Bircher ,  Cuong V. Luong

发明人： Keith G. Bircher ,  Cuong V. Luong

IPC分类号： C02F1/78

CPC分类号： C02F1/78 ,  C02F2101/003 ,  C02F2103/06 ,  Y10S149/124 ,  Y10S210/903 ,  Y10S210/909

摘要： A process is provided for treating aqueous waste or groundwater contaminated with nitro-containing organic chemicals to degrade the compound sufficiently to permit disposal of the waste or groundwater.

摘要翻译： 提供了一种用于处理受含硝基有机化学物质污染的含水废物或地下水的方法，以使化合物充分降解以允许处置废物或地下水。

公开(公告)号：US5378262A

公开(公告)日：1995-01-03

申请号：US216258

申请日：1994-03-22

申请人： Indje O. Mihaylov ,  Eberhard Krause ,  Steve W. Laundry ,  Cuong V. Luong

发明人： Indje O. Mihaylov ,  Eberhard Krause ,  Steve W. Laundry ,  Cuong V. Luong

IPC分类号： C01G51/00 ,  C01G53/00 ,  C22B3/38

CPC分类号： C22B23/0415 ,  C01G51/003 ,  C01G53/003 ,  C22B23/0453 ,  C22B3/0047 ,  C22B3/007 ,  Y02P10/234

摘要： The invention provides a hydrometallurgical process for the recovery of metals. In particular, an aqueous feed solution derived from acid leaching is provided. The aqueous feed solution contains nickel and/or cobalt ions. The pH of the solution is maintained at a level between about 2 and 6. The aqueous feed solution is contacted with a water-immiscible organic phase containing an extractant to load the nickel and/or cobalt metal ions to form a metal-bearing organic phase. The extractant has at least one organic soluble dithiophosphinic acid, alkali, alkaline earth metal or ammonium salt thereof. The aqueous feed solution has sufficiently low levels of chromium (VI) ions and copper ions to allow repeated use of the extractant. The metal-bearing organic phase is then separated from the metal-containing aqueous feed solution. Finally, after separation from the aqueous feed solution, the metal-bearing organic phase is contacted with an aqueous strip solution to recover the loaded nickel and/or cobalt from the metal-bearing organic phase.

摘要翻译： 本发明提供了用于回收金属的湿法冶金方法。 特别地，提供了从酸浸出得到的水性饲料溶液。 含水进料溶液含有镍和/或钴离子。 溶液的pH值保持在约2和6之间。含水进料溶液与含有萃取剂的与水不混溶的有机相接触以装载镍和/或钴金属离子以形成含金属的有机相 。 萃取剂具有至少一种有机可溶性二硫代次膦酸，其碱金属，碱土金属或铵盐。 含水进料溶液具有足够低水平的铬（VI）离子和铜离子以允许反复使用萃取剂。 然后将含金属有机相与含金属的水性进料溶液分离。 最后，在与进料水溶液分离后，将含金属有机相与含水条带溶液接触，从含有金属的有机相中回收负载的镍和/或钴。

公开(公告)号：US5447552A

公开(公告)日：1995-09-05

申请号：US337283

申请日：1994-11-10

申请人： Indje O. Mihaylov ,  Eberhard Krause ,  Steve W. Laundry ,  Cuong V. Luong

发明人： Indje O. Mihaylov ,  Eberhard Krause ,  Steve W. Laundry ,  Cuong V. Luong

IPC分类号： C01G51/00 ,  C01G53/00 ,  C22B3/38

CPC分类号： C22B23/0415 ,  C01G51/003 ,  C01G53/003 ,  C22B23/0453 ,  C22B3/0047 ,  C22B3/007 ,  Y02P10/234

摘要： The invention provides a hydrometallurgical process for the recovery of metals. In particular, an aqueous feed solution originating from acid leaching is provided. The aqueous feed solution contains nickel and/or cobalt ions. The pH of the solution is maintained at a level between about 2 and 6. The aqueous feed solution is contacted with a water-immiscible organic phase containing an extractant to load the nickel and/or cobalt metal ions to form a metal-bearing organic phase. The extractant has at least one organic soluble dithiophosphinic acid, alkali, alkaline earth metal or ammonium salt thereof. The aqueous feed solution has sufficiently low levels of chromium (VI) ions, iron (III) ions and copper ions to allow repeated use of the extractant. The metal-bearing organic phase is then separated from the metal-containing aqueous feed solution. Finally, after separation from the aqueous feed solution, the metal-bearing organic phase is contacted with an aqueous strip solution to recover the loaded nickel and/or cobalt from the metal-bearing organic phase.

摘要翻译： 本发明提供了用于回收金属的湿法冶金方法。 特别地，提供了源自浸酸的水性饲料溶液。 含水进料溶液含有镍和/或钴离子。 溶液的pH值保持在约2和6之间。含水进料溶液与含有萃取剂的与水不混溶的有机相接触以装载镍和/或钴金属离子以形成含金属的有机相 。 萃取剂具有至少一种有机可溶性二硫代次膦酸，其碱金属，碱土金属或铵盐。 含水进料溶液具有足够低水平的铬（VI）离子，铁（III）离子和铜离子，以允许反复使用萃取剂。 然后将含金属有机相与含金属的水性进料溶液分离。 最后，在与进料水溶液分离后，将含金属有机相与含水条带溶液接触，从含有金属的有机相中回收负载的镍和/或钴。