| 发明名称 |
Method of removing scale caused by raffinate in a phosphoric acid purification process |
| 摘要 |
A scale deposited from a raffinate in a purification of a wet process phosphoric acid with an organic solvent or a mixture of an organic solvent and a strong acid by an extraction method is contacted with a solution containing a strong base to react with iron and aluminum components in the scale.
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| 申请公布号 |
US4104079(A) |
申请公布日期 |
1978.08.01 |
| 申请号 |
US19770786191 |
申请日期 |
1977.04.11 |
| 申请人 |
TOYO SODA MANUFACTURING CO., LTD. |
发明人 |
FUJII, SAKUMI;UCHIDA, MASAO;WATANABE, OSAMU |
| 分类号 |
B01D11/04;C01B25/234;C01B25/46;(IPC1-7):B08B3/08 |
主分类号 |
B01D11/04 |
| 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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