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1.发明授权Process of extracting anions with quaternary amines 失效Verfahren zum Extraieren von Anionen mittelsquarternärerAmine。
公开(公告)号：EP0445347B1
公开(公告)日：1994-08-10
申请号：EP90112344.8
申请日：1990-06-28
CPC分类号： C22B3/001 , B01J41/05 , C02F1/26 , C22B3/0032 , Y02P10/234
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公开(公告)号：EP0445347A2
公开(公告)日：1991-09-11
申请号：EP90112344.8
申请日：1990-06-28
CPC分类号： C22B3/001 , B01J41/05 , C02F1/26 , C22B3/0032 , Y02P10/234
摘要： An improved extraction system employing a quaternary amine to extract anions from an aqueous solution, particularly precious metals such as gold or silver from an aqueous alkaline solution. The improvement comprises the use of a weak organic acid (a compound providing an acidic proton) along with the quaternary amine. The improvement is useful in both liquid-liquid and liquid-solid extraction systems.
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公开(公告)号：EP0445347A3
公开(公告)日：1992-05-13
申请号：EP90112344.8
申请日：1990-06-28
CPC分类号： C22B3/001 , B01J41/05 , C02F1/26 , C22B3/0032 , Y02P10/234
摘要： An improved extraction system employing a quaternary amine to extract anions from an aqueous solution, particularly precious metals such as gold or silver from an aqueous alkaline solution. The improvement comprises the use of a weak organic acid (a compound providing an acidic proton) along with the quaternary amine. The improvement is useful in both liquid-liquid and liquid-solid extraction systems.
摘要翻译： 一种改进的萃取系统，使用季胺从碱性水溶液中提取阴离子，特别是贵金属如金或银。 该改进包括使用弱有机酸（提供酸性质子的化合物）以及季胺。 该改进在液 - 液和液 - 固萃取系统中是有用的。
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