发明名称 |
PRODUCTION OF HIGH PURITY PRECIPITATED CALCIUM CARBONATE |
摘要 |
The present invention relates to a process for the preparation of precipitated calcium carbonate comprising the steps of a) providing and calcining calcium carbonate comprising material; b) slaking the reaction product obtained from step a) with an aqueous ammonium chloride solution; c) separating insoluble components from the calcium chloride solution obtained from step b); d) carbonating the calcium chloride solution obtained from step c); e) separating the precipitated calcium carbonate obtained from step d); the precipitated calcium carbonate obtained by this process, as well as uses thereof. |
申请公布号 |
EP2632855(A1) |
申请公布日期 |
2013.09.04 |
申请号 |
EP20110770803 |
申请日期 |
2011.10.20 |
申请人 |
OMYA DEVELOPMENT AG |
发明人 |
TAVAKKOLI, BAHMAN;SÖTEMANN, JÖRG;POHL, MICHAEL;SCHMÖLZER, THOMAS |
分类号 |
C01F11/18;C09C1/02;D21H17/67 |
主分类号 |
C01F11/18 |
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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