发明名称 |
PHOSPHOANHYDRITE PROCESS |
摘要 |
<p>A wet process for producing phosphoric acid and phosphoanhydrite by acidulation of phosphate rock with a phosphoric acid/sulfuric acid mixture containing a very high recycle content of small sized anhydrite seed crystals. A strong phosphoric acid is obtained having a concentration of at least about 35% P2O5. Further, the phosphoanhydrite may be readily converted to an industrially usable gypsum product.</p> |
申请公布号 |
CA1186867(A) |
申请公布日期 |
1985.05.14 |
申请号 |
CA19830426113 |
申请日期 |
1983.04.18 |
申请人 |
UNITED STATES GYPSUM COMPANY |
发明人 |
GAYNOR, JOHN C.;PALMER, JAY W. |
分类号 |
C01F11/46;(IPC1-7):C01F11/46 |
主分类号 |
C01F11/46 |
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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