发明名称 |
Phosphate recovery from wet phosphoric acid purification process |
摘要 |
The invention is a process for recovering phosphorus value from magnesium pyrophosphate containing filter media in the wet superphosphoric acid purification process. The invention comprises treating the filter cake with a salt to remove the adhering phosphoric acid without solubilizing magnesium acid pyrophosphate. The filter cake, after phosphoric acid removal, can be utilized as commercial or technical grade magnesium acid pyrophosphate.
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申请公布号 |
US4684512(A) |
申请公布日期 |
1987.08.04 |
申请号 |
US19860900192 |
申请日期 |
1986.08.25 |
申请人 |
STAUFFER CHEMICAL COMPANY |
发明人 |
STEWART, JOHN M.;CLARK, TEDDY R.;EDGING, THOMAS E. |
分类号 |
C01B25/24;C01B25/28;C01B25/30;C01B25/42;(IPC1-7):C01B25/16 |
主分类号 |
C01B25/24 |
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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