发明名称 |
Process for purifying phosphoric acid |
摘要 |
Wet process phosphoric acid is purified by extraction with a hexanone of pentanone to form an organic extract, containing phosphoric acid, from which the acid content is recovered by treatment with water or aqueous phosphoric acid in 2 or more portions to give 2 or more purified acids, the recovery to give the last purified acid being in more than 1 countercurrent stage.
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申请公布号 |
US4277455(A) |
申请公布日期 |
1981.07.07 |
申请号 |
US19790084188 |
申请日期 |
1979.10.12 |
申请人 |
ALBRIGHT & WILSON LIMITED |
发明人 |
WILLIAMS, THOMAS A.;CUSSONS, FRANK M. |
分类号 |
C01B25/46;(IPC1-7):C01B25/16 |
主分类号 |
C01B25/46 |
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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