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1. 发明授权

US4427640A Sequential process for extraction and recovery of vanadium and uranium from wet process acids 失效
标题翻译：从湿法酸提取和回收钒和铀的顺序过程
公开(公告)号：US4427640A
公开(公告)日：1984-01-24
申请号：US194444
申请日：1980-10-06
申请人： P. David Bowerman , Michael F. Lucid
发明人： P. David Bowerman , Michael F. Lucid
IPC分类号： C01G31/00 , C01G43/00 , C22B3/38 , C22B60/02
CPC分类号： C01G43/00 , C01G31/003 , C22B3/0052 , C22B3/0091 , C22B60/026 , Y02P10/234
摘要： A process for preferentially extracting and recovering vanadium and uranium from wet process acids. The wet process acid first is contacted with a neutral organo-phosphorus compound to extract the vanadium values. The resulting loaded organic phase is separated from the wet process acid due to immiscibility of the acid and organic phases. The vanadium values then are separated from the organic phase by stripping. The raffinate separated from the first organic extractant then is contacted with a second organic extractant comprising a dialkylphosphoric acid and a neutral organo-phosphorus compound to extract the uranium values. The resulting loaded organic phase is separated from the wet process acid due to immiscibility of the acid and organic phases. The organic phase is stripped with a reductive stripping solution and the stripping solution then is oxidized to convert the uranium values to the hexavalent oxidation state. The oxidized solution then is contacted with another organic extractant to reextract the uranium to thereby concentrate the uranium product which then is stripped from the organic product with ammonium carbonate to form ammonium uranyl carbonate.
摘要翻译：从湿法酸中优先提取和回收钒和铀的方法。首先将湿法酸与中性有机磷化合物接触以提取钒值。由于酸和有机相的不混溶，所得负载的有机相与湿法酸分离。然后通过汽提将钒值与有机相分离。然后将与第一有机萃取剂分离的萃余液与包含二烷基磷酸和中性有机磷化合物的第二有机萃取剂接触以提取铀值。由于酸和有机相的不混溶，所得负载的有机相与湿法酸分离。有机相用还原汽提溶液汽提，然后将汽提溶液氧化，将铀值转化为六价氧化态。然后将氧化溶液与另一种有机萃取剂接触以再提取铀，从而浓缩铀产物，然后用碳酸铵从有机产物中汽提出铀产物，形成碳酸铀酰铵。

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