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1.发明授权公开(公告)号：US06428604B1
公开(公告)日：2002-08-06
申请号：US09664475
申请日：2000-09-18
IPC分类号： C22B308
CPC分类号： C22B23/0461 , C22B3/06 , C22B23/0423 , C22B23/043 , Y02P10/234
摘要： A hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate. The process involves forming a slurry of the sulfidic flotation concentrate in an acid solution, and subjecting the slurried flotation concentrate to a chlorine leach at atmospheric pressure followed by an oxidative pressure leach. After liquid-solids separation and purification of the concentrate resulting in the removal of copper and cobalt, the nickel-containing solution is directly treated by electrowinning to recover nickel cathode therefrom.
摘要翻译： 用于从硫化浮选精矿中回收镍和钴的湿法冶金工艺。 该方法包括在酸性溶液中形成硫化浮选浓缩物的浆料，并将浆化浮选浓缩物在大气压下进行氯浸出，然后进行氧化压力浸出。 在固体分离和纯化浓缩物之后，除去铜和钴后，通过电解沉积直接处理含镍溶液以从其中回收镍阴极。
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公开(公告)号：US20080308429A1
公开(公告)日：2008-12-18
申请号：US11764263
申请日：2007-06-18
申请人： BRUCE JOHN LOVE
发明人： BRUCE JOHN LOVE
CPC分类号： C25C1/08 , C25C7/02 , H01M4/0438 , H01M4/045 , H01M2004/028
摘要： An acidic aqueous electrolyte solution for production of a nickel cathode is provided which includes nickel ions, and 2,5-dimethyl-3-hexyne-2,5-diol. The 2,5-dimethyl-3-hexyne-2,5-diol may be present in the acidic aqueous electrolyte solution in an amount ranging from about 5 ppm to about 300 ppm. Also provided is a process for electrowinning or electrorefining a nickel cathode which includes providing an acidic aqueous electrolyte solution including nickel ions, and 2,5-dimethyl-3-hexyne-2,5-diol; and electrolytically depositing nickel to form a nickel cathode. Addition of 2,5-dimethyl-3-hexyne-2,5-diol results in a reduction of striations and other defects which may occur on the surface of cathodes made by electrowinning or electrorefining.
摘要翻译： 提供了一种用于生产镍阴极的酸性电解质水溶液，其包括镍离子和2,5-二甲基-3-己炔-2,5-二醇。 2,5-二甲基-3-己炔-2,5-二醇可以以约5ppm至约300ppm的量存在于酸性电解质水溶液中。 还提供了一种镍电解电解冶炼或电解精炼方法，其包括提供包含镍离子的酸性电解质溶液和2,5-二甲基-3-己炔-2,5-二醇; 并电解沉积镍以形成镍阴极。 加入2,5-二甲基-3-己炔-2,5-二醇可以减少由电解冶金或电解精炼制成的阴极表面上可能发生的条纹和其他缺陷。
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公开(公告)号：US06569224B2
公开(公告)日：2003-05-27
申请号：US10175023
申请日：2002-06-19
IPC分类号： C22B1500
CPC分类号： C22B23/0461 , C22B3/06 , C22B23/0423 , C22B23/043 , Y02P10/234
摘要： A hydrometallurgical process for the recovery of nickel and cobalt values from a sulfidic flotation concentrate. The process involves forming a slurry of the sulfidic flotation concentrate in an acid solution, and subjecting the slurried flotation concentrate to a chlorine leach at atmospheric pressure followed by an oxidative pressure leach. After liquid-solids separation and purification of the concentrate resulting in the removal of copper and cobalt, the nickel-containing solution is directly treated by electrowinning to recover nickel cathode therefrom.
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公开(公告)号：US5759512A
公开(公告)日：1998-06-02
申请号：US658196
申请日：1996-06-04
申请人： William Andrew Rickelton , Indje Ognianov Mihaylov , Bruce John Love , Pak Kuen Louie , Eberhard Krause
发明人： William Andrew Rickelton , Indje Ognianov Mihaylov , Bruce John Love , Pak Kuen Louie , Eberhard Krause
CPC分类号： C22B3/007 , C22C21/00 , F28F21/084 , Y02P10/234
摘要： The invention provides a method of regenerating dithiophosphorus extractants such as dithiophosphoric acids, dithiophosphonic acids and dithiophosphinic acids from their sulfur-sulfur bonded oxidation products contained in an organic solution. The process generates active hydrogen for regenerating the spent dithiophosphorus extractants. Advantageously, this active hydrogen originates either from introducing a reactive metal into a liquid mixture containing the organic solution and an acidic aqueous solution to form nascent hydrogen or from using hydrogen gas in the presence of a catalyst in the organic solution. The active hydrogen generated in the process breaks the sulfur-sulfur bonds of the dithiophosphorus molecules to form the corresponding dithiophosphorus acids.
摘要翻译： 本发明提供一种从有机溶液中含硫硫键合的氧化产物中再生二硫代磷酸提取剂如二硫代磷酸，二硫代磷酸和二硫代次膦酸的方法。 该方法产生活性氢以再生废二硫代磷提取物。 有利地，该活性氢源自于将有机金属引入含有机溶液和酸性水溶液的液体混合物中以形成新生氢气，或者在催化剂存在下在有机溶液中使用氢气。 在该过程中产生的活性氢破坏二硫代磷分子的硫 - 硫键形成相应的二硫代磷酸。
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