发明名称 |
METHOD FOR PROCESSING CADMIFEROUS SOLIDS |
摘要 |
<p>The invention relates to a method for processing cadmiferous solids that contain anhydrite and/or hemihydrate calcium sulphate having a cadmium content, characetrised in that it comprises extracting the cadmium from said cadmiferous solids by putting them in contact with an aqueous solution of an alkaline metal, and carrying a solid/liquid separation between a solid phase containing dihydrate calcium sulphate with a low cadmium content relative to said cadmium content in the anhydrite and/or hemihydrate calcium sulphate, and an aqueous phase containing alkaline metal sulphate and cadmium in a solution.</p> |
申请公布号 |
EP2132347(B1) |
申请公布日期 |
2011.06.01 |
申请号 |
EP20070726637 |
申请日期 |
2007.03.06 |
申请人 |
CENTRE D'ETUDES ET DE RECHERCHES DES PHOSPHATES MINERAUX;PRAYON TECHNOLOGIES |
发明人 |
KOSSIR, ABDELAALI;CAPPELLE, PHILIPPE |
分类号 |
C22B17/00;C01B25/238 |
主分类号 |
C22B17/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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