发明名称 |
Fremgangsmåde til fremstilling af PCC |
摘要 |
The present invention relates to a process of preparing precipitated calcium carbonate (PCC) in a low energy intensity reactor in such a manner that the amount of solids in the PCC product can be raised to 35% or more without performing a dewatering step. The process comprises performing in parallel and in two or more separate reaction vessel the steps of contacting calcium hydroxide with a gas comprising carbon dioxide to allow formation of calcium carbonate, and adding calcium oxide, lime or dry calcium hydroxide or a combination of any of the three to a part of the resulting mixture of calcium hydroxide and calcium carbonate. The invention further provides a specialized reactor system as well as the use of this reactor system in the manufacture of PCC. |
申请公布号 |
DK2144851(T3) |
申请公布日期 |
2016.08.01 |
申请号 |
DK20080734544T |
申请日期 |
2008.04.17 |
申请人 |
Omya International AG |
发明人 |
HANSEN, Kaare, Hvid;PEDERSEN, Mogens |
分类号 |
C01F11/18;B01J19/18 |
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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