Influence of chemical additives on the formation of super-fine calcium carbonate

被引：82

作者：

Xiang, L ^{[1
]}

Xiang, Y ^{[1
]}

Wang, ZG ^{[1
]}

Jin, Y ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Chem Engn, Beijing 100084, Peoples R China

来源：

POWDER TECHNOLOGY | 2002年 / 126卷 / 02期

关键词：

calcium carbonate; carbonation; super-fine particles; additives;

D O I：

10.1016/S0032-5910(02)00047-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A modified carbonation process for the synthesis of super-fine calcium carbonate particles from Ca(OH)2 slurry at room temperature using a CO2-air gas mixture was investigated, The adaptation of a radial-shaped sparger and the addition of chemicals such as ZnCl2 and EDTA accelerated the carbonation process, thus reducing the diameter of the precipitated calcium carbonate particles. Thermodynamic calculation results showed that the role of EDTA in the carbonation process was mainly through the complex interaction between EDTA and Ca2+. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：129 / 133

页数：5

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