| 发明名称 |
Post precipitation control of low-iron phosphoric acid, without perlite |
| 摘要 |
The Hill process for control of post-precipitation in wet process phosphoric acid can be made to work on low-iron phosphate rock, without the need of added perlite or other aluminum silicate.
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| 申请公布号 |
US4364912(A) |
申请公布日期 |
1982.12.21 |
| 申请号 |
US19810284623 |
申请日期 |
1981.07.20 |
| 申请人 |
W. R. GRACE & CO. |
发明人 |
HILL, RICHARD N. |
| 分类号 |
C01B25/235;(IPC1-7):C01B25/16 |
主分类号 |
C01B25/235 |
| 代理机构 |
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代理人 |
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