发明名称 |
Method for extracting and separating rare earth elements |
摘要 |
Solvent extraction from an aqueous phase containing 5 first and second rare earth elements is carried out by contacting an organic phase containing a diglycolamic acid as an extractant and a hydrocarbon or a low-polar alcohol as a solvent, with the aqueous phase below pH 3 for extracting the first rare earth element into the organic phase, back 10 extracting from the organic phase with an aqueous acid solution for recovering the first rare earth element, and recovering the second rare earth element which has not been extracted into the organic phase and has remained in the aqueous phase. 8 _________ |
申请公布号 |
AU2014256362(B2) |
申请公布日期 |
2015.11.19 |
申请号 |
AU20140256362 |
申请日期 |
2014.10.30 |
申请人 |
SHIN-ETSU CHEMICAL CO., LTD. |
发明人 |
SUGAHARA, HIROTO;SAKAKI, KAZUAKI;MINOWA, TAKEHISA;NAGANAWA, HIROCHIKA;SHIMOJO, KOJIRO |
分类号 |
C22B59/00;C01F17/00;C22B3/26;C22B3/32 |
主分类号 |
C22B59/00 |
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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