发明授权
- 专利标题： Extraction process for the recovery of tungsten from low level sources
- 专利标题（中）： 从低水平来源回收钨的提取过程
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申请号： US186948申请日： 1980-09-15
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公开(公告)号： US4287159A公开(公告)日： 1981-09-01
- 发明人: Samuel Natansohn , Sophia R. Su
- 申请人： Samuel Natansohn , Sophia R. Su
- 申请人地址： MA Waltham
- 专利权人： GTE Laboratories Incorporated
- 当前专利权人： GTE Laboratories Incorporated
- 当前专利权人地址： MA Waltham
- 主分类号： C01G41/00
- IPC分类号： C01G41/00 ; C22B3/26 ; C22B3/28 ; C22B3/32 ; C22B3/34
摘要：
A process for recovering tungsten from low level sources such as naturally occurring brines in a form substantially free of contaminating boron comprises adjusting the pH of the source solution to a value below about pH 8, contacting the pH-adjusted solution with an ion exchange resin, preferentially eluting the tungsten values in an aqueous eluate, extracting the eluate solution with an organic extractant comprising o-mercaptobenzoic acid, a quaternary alkylammonium salt and an inert organic solvent, and stripping the tungsten-loaded organic extractant solution with an aqueous basic stripping solution.
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