发明名称 |
METHOD OF RECOVERING RARE EARTHS FROM A SOLID MIXTURE CONTAINING A HALOPHOSPHATE AND A RARE EARTH COMPOUND AND SOLID MIXTURES SUITABLE FOR THIS METHOD |
摘要 |
An acid treatment, in a liquid medium, of a solid containing a halophosphate and a rare earth compound is described. Further described, is the addition of a base to the medium obtained previously and separation of a solid phase from a liquid phase; mixing and calcination of the solid obtained previously with an alkaline solid compound; redispersing the calcined product in water, separation of the solid product from the suspension obtained in the preceding step; dispersing this solid in water and acidification of the dispersion and separation of the solid from this dispersion. |
申请公布号 |
EP2668135(A1) |
申请公布日期 |
2013.12.04 |
申请号 |
EP20120700825 |
申请日期 |
2012.01.19 |
申请人 |
RHODIA OPERATIONS |
发明人 |
BRACONNIER, JEAN-JACQUES;ROLLAT, ALAIN |
分类号 |
C01F17/00;C09K11/01;H01J9/52 |
主分类号 |
C01F17/00 |
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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