发明公开
- 专利标题: RARE EARTH RECOVERY FROM PHOSPHOR MATERIAL AND ASSOCIATED METHOD
- 专利标题(中): 稀土从荧光材料及相应方法恢复
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申请号: EP11852060.0申请日: 2011-11-16
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公开(公告)号: EP2655679A1公开(公告)日: 2013-10-30
- 发明人: GOURISHANKAR, Karthick, Vilapakkam , NAMMALWAR, Prasanth, Kumar , SRIVASTAVA, Alok, Mani , MANEPALLI, Satya, Kishore
- 申请人: General Electric Company
- 申请人地址: 1 River Road Schenectady, NY 12345 US
- 专利权人: General Electric Company
- 当前专利权人: General Electric Company
- 当前专利权人地址: 1 River Road Schenectady, NY 12345 US
- 代理机构: Picker, Madeline Margaret
- 优先权: US972589 20101220
- 国际公布: WO2012087456 20120628
- 主分类号: C22B59/00
- IPC分类号: C22B59/00 ; C22B7/00 ; C01F17/00 ; B09B3/00
摘要:
A method for recovering at least one rare earth element from a phosphor is presented. The method includes a halogenation step (a) and a reduction step (b). The phosphor is first halogenated in a molten salt to convert at least one rare earth constituent contained therein to a soluble rare earth halide. Then, the rare earth halide in the molten salt can be reduced, to convert the rare earth halide to a rare earth element in its elemental state. A method for individually recovering multiple rare earth elements from a phosphor is also presented.
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