| 发明名称 |
Process for recovering yttrium and lanthanides from wet-process phosphoric acid. |
| 摘要 |
<p>Yttrium and lanthanides are recovered from wet-process phosphoric acid.
<??>The phosphoric acid is treated with a flocculant by which a precipitate is formed. This latter is separated out and yttrium and lanthanides are recovered from the precipitate. 75% by wt. or more of the yttrium and lanthanides present can be recovered in a very simple manner. </p> |
| 申请公布号 |
EP0039119(A1) |
申请公布日期 |
1981.11.04 |
| 申请号 |
EP19810200458 |
申请日期 |
1981.04.25 |
| 申请人 |
STAMICARBON B.V. |
发明人 |
WETERINGS, CORNELIS ANTONIUS MARIA;JANSSEN, JOHANNES ANNA |
| 分类号 |
C01B25/238;C01F17/00;C22B59/00;(IPC1-7):22B59/00 |
主分类号 |
C01B25/238 |
| 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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