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公开(公告)号:US6022991A
公开(公告)日:2000-02-08
申请号:US207214
申请日:1998-12-08
CPC分类号: C07F9/165 , C07F9/025 , Y02P20/582
摘要: This is a method of regenerating dithiophosphorus acids from disulfides containing sulfur--sulfur bonds, formed by oxidation of dithiophosphorus acids, such as sulfur--sulfur bonding of dithiophosphoric, dithiophosphonic and dithiophosphinic acids, in a solvent extraction organic phase in which the dithiophosphorus acid is dissolved in a diluent. This process reacts metal directly with the organic solution containing the disulfide to produce a metal loaded complex form of the regenerated dithiophosphorus extractant in the organic solution. This metal complex forms by direct reaction of the metal with the disulfides without requiring the presence or the formation of nascent or gaseous hydrogen. The organic solution containing the regenerated dithiophosphorus extractant can be either directly recycled into a solvent extraction circuit or recycled after the loaded metal is stripped.
摘要翻译: 这是在二硫代磷酸溶解的溶剂萃取有机相中,通过二硫代磷酸的氧化形成二硫代磷酸,二硫代磷酸和二硫代次膦酸的硫 - 硫键形成的硫硫键的二硫代磷酸的再生方法 在稀释剂中。 该方法使金属与含有二硫化物的有机溶液直接反应,以在有机溶液中产生再生二硫代磷萃取剂的金属负载络合物形式。 金属络合物通过金属与二硫化物的直接反应形成,而不需要存在或形成新生或气态氢。 含有再生二硫代磷酸提取剂的有机溶液可以直接再循环到溶剂萃取回路中,或者在加载的金属被剥离后再循环。