发明名称 |
Process for making wet-process phosphoric acid |
摘要 |
Wet-process phosphoric acid is made by subjecting a phosphate ore to processing treatment with a mineral acid resulting in the formation of a processed suspension. The formation of silicofluorides is obviated by adding, either to the phosphate ore or the processed suspension, a quantity of an aluminum compound soluble in phosphoric acid sufficent for the processed suspension to present an aluminum concentration of 0.3 to 1.0 wgt %, based on P2O5.
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申请公布号 |
US4683127(A) |
申请公布日期 |
1987.07.28 |
申请号 |
US19860826289 |
申请日期 |
1986.02.05 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
KOLKMANN, FRIEDRICH;RESSEL, HERBERT;GRADL, REINHARD;SCHIMMEL, GUENTHER |
分类号 |
C01B25/22;C01B25/225;C01B25/226;(IPC1-7):C01B25/16 |
主分类号 |
C01B25/22 |
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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