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公开(公告)号：EP2132347B1
公开(公告)日：2011-06-01
申请号：EP07726637.7
申请日：2007-03-06
IPC分类号： C22B17/00 , C01B25/238
CPC分类号： C22B3/44 , C01B25/238 , C01F11/468 , C22B7/006 , C22B17/04 , Y02P10/234
摘要： 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.
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公开(公告)号：EP2132347A1
公开(公告)日：2009-12-16
申请号：EP07726637.7
申请日：2007-03-06
IPC分类号： C22B17/00 , C01B25/238
CPC分类号： C22B3/44 , C01B25/238 , C01F11/468 , C22B7/006 , C22B17/04 , Y02P10/234
摘要： 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.
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