发明名称 |
Process for the preparation of phosphoric acid |
摘要 |
When phosphate rock and sulfuric acid are mixed under such conditions that gypsum dihydrate is stably formed and sulfuric acid is added to the phosphate rock in an amount not exceeding the amount equivalent to a calcium component in the phosphate rock, small masses of the reaction product between the phosphate rock and sulfuric acid can be maintained in the non-disintegrable form throughout extraction of phosphoric acid from said reaction product, and phosphoric acid can be extracted from such reaction product at a high rate in a good yield.
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申请公布号 |
US3935298(A) |
申请公布日期 |
1976.01.27 |
申请号 |
US19730375828 |
申请日期 |
1973.07.02 |
申请人 |
MIZUSAWA KAGAKU KOGYO KABUSHIKI KAISHA |
发明人 |
SUGAHARA, YUJIRO;NOSHI, YOSHIBUMI;NAITO, HIROYUKI;TAKAHASHI, AKIRA;SHOJI, SHOJI |
分类号 |
C01B25/22;C01B25/232;C01B25/234;C01F11/46;(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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