发明名称 |
PROCESS FOR THE SPONTANEOUS PRECIPITATION OF SULFATES DISSOLVED IN WATER AS CALCIUM ALUMINIUM SULFATE AND THE APPLICATION OF THIS PROCESS FOR THE PREPARATION OF LOW-CHLORIDE GYPSUM-ANHYDRITE CONTAINING ALUMINIUM OXIDE |
摘要 |
The invention relates to a process for the spontaneous chemical precipitation of sulphates dissolved in water as calcium aluminium sulphate, using a hydrated lime (calcium hydroxide) suspension and a sodium hydroxoaluminate solution as precipitants, and the application of this process for preparing calcium aluminium sulphates which can be processed on an industrial scale into low-chloride anhydrous gypsum (anhydrite) containing alumium oxide using a thermal process known per se. |
申请公布号 |
EP0584502(A3) |
申请公布日期 |
1996.02.07 |
申请号 |
EP19930110956 |
申请日期 |
1993.07.08 |
申请人 |
AIR BETEILIGUNGS GMBH |
发明人 |
BINGS, HUBERT;KAISER, HEIKO;LEHMKUHL, JOSEF;KOEHNK, DIETHELM |
分类号 |
C01F7/76;C01F11/46;C02F1/52 |
主分类号 |
C01F7/76 |
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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