发明名称 |
PROCESS FOR THE PREPARATION OF AQUEOUS SUSPENSIONS CONTAINING AT LEAST 65% BY WEIGHT OF CALCIUM CARBONATE |
摘要 |
Process for the preparation of an aqueous suspension containing at least 65% by weight of calcium carbonate, in which process calcium carbonate is crystallized in a dilute aqueous medium, a wet concentrate of calcium carbonate is separated from the resulting dilute aqueous suspension of calcium carbonate and the said calcium carbonate concentrate is fluidized and homogenized in the presence of a dispersing agent. The calcium carbonate is crystallized in the presence of a water-soluble polyelectrolyte and the calcium carbonate concentrate is separated from the dilute suspension of calcium carbonate by essentially mechanical separating means. |
申请公布号 |
DE2860643(D1) |
申请公布日期 |
1981.08.06 |
申请号 |
DE19782860643 |
申请日期 |
1978.07.07 |
申请人 |
SOLVAY & CIE (SOCIETE ANONYME) |
发明人 |
BRAHM, JACQUES;DE RATH, JEAN-PIERRE |
分类号 |
C01F11/18;C09C1/02;C09D17/00;D21H19/38;D21H19/52;(IPC1-7):01F11/18;09C1/02 |
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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