| 发明名称 |
PURIFYING METHOD FOR YTTRIUM |
| 摘要 |
<p>PURPOSE:To recover Y from highly conc. Y sulfate via Y2O3 with high yield by extracting an aq. soln. contg. sulfates of Y and middle atomic wt. rare earth elements with acidic phosphoric acid esters to concentrate Y; treating the extract with sulfuric acid to convert Y to Y sulfate again; recycling the Y sulfate to the first process; and repeating the above procedure.</p> |
| 申请公布号 |
JPS5340609(A) |
申请公布日期 |
1978.04.13 |
| 申请号 |
JP19760115653 |
申请日期 |
1976.09.27 |
| 申请人 |
MITSUBISHI CHEM IND |
发明人 |
MINAGAWA YUKINORI;KANEKO TSUGIO;YAMAGUCHI KUNIHIKO;KOJIMA KATSUMI;MIWA TAIICHIROU |
| 分类号 |
C22B59/00;C01F17/00;C22B9/02 |
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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