发明名称 |
PROCESS FOR THE MANUFACTURE OF AN OVERBURNED GYPSUM |
摘要 |
A process of making anhydrous calcium sulfate form II from synthetic gypsum by heating to a temperature of 325 DEG - 450 DEG C. in the presence of steam as catalyst for a period of time necessary to convert the gypsum into the anhydrous calcium sulfate II; the product may be ground and K2SO4 and/or sodium fluosilicate added. |
申请公布号 |
ZA7100051(B) |
申请公布日期 |
1971.10.27 |
申请号 |
ZA19710000051 |
申请日期 |
1971.01.05 |
申请人 |
PROGIL AND CIMENTS LAFARGE |
发明人 |
CHAURAND P;MAGNAN R;COQUERY J |
分类号 |
C04B11/26;C01F11/46;C04B11/05;C04B24/14 |
主分类号 |
C04B11/26 |
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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