Sequential process for extraction and recovery of
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专利名称：Sequential process for extraction and
recovery of vanadium and uranium from wet
process acids
发明人：P. David Bowerman,Michael F. Lucid
申请号：US06/194444
申请日：19801006
公开号：US04427640A
公开日：
19840124
专利内容由知识产权出版社提供
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.
申请人：KERR-MCGEE CHEMICAL CORPORATION
代理人：William G. Addison 更多信息请下载全文后查看。