发明名称 |
KONTINUERLIGT FOERFARANDE FOER FRAMSTAELLNING AV FOSFORSYRA OCH KALCIUMSULFAT. |
摘要 |
There is described a process which comprises adjusting on the one hand the flow rates of a circulating mixture relative to a base flow rate according to very specific specifications, and on the other hand so adjusting the reaction conditions in succeeding reaction zones as to obtain a production phosphoric acid with a P2O5 concentration between 33 and 52%, and a H2SO4 concentration between 0.25 and 2.5%, and calcium sulphate in the form of dihydrate, hemihydrate, anhydrite or a mixture of at least two said crystalline forms. |
申请公布号 |
FI854256(L) |
申请公布日期 |
1986.05.06 |
申请号 |
FI19850004256 |
申请日期 |
1985.10.30 |
申请人 |
PRAYON DEVELOPPEMENT, SOCIETE ANONYME |
发明人 |
DAVISTER, ARMAND LAURENT;THIRION, FRANCIS ARTHUR |
分类号 |
C01B25/22;C01B25/222;C01B25/223;C01B25/225;C01B25/226;C01B25/228;C01B25/229;C01B25/231;C01F11/46 |
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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