摘要：以Ca（OH）₂悬浊液和CO₂气体在起重力反应器（旋转填充床反应器）中进行碳化反应制备纳米立方形碳酸钙为研究对象，实验研究了超重力加速度gr，液体循环量L，气体流量G，Ca（OH）₂初始浓度等操作条件对产物粒度及其分布、碳化反应时间的影响。结果表明：利用超重力反应结晶法可以制备出平均粒度为15～40nm、分布较窄的CaCO₃，碳化反应时间较传统方法缩短约4～10倍。

关键词：超重力反应结晶法；纳米材料；碳酸钙

Abstract:The synthesis of nano-sized cubic CaCO₃, by the high-gravity reactive precipita-tion in a rotating packed bed reactor(RPBR) were studied. The effects of high gravity accelera-tion ,liquid flow volumetric rate ,gas flow volumetric rate and initial concentration of Ca(OH)₂, onthe carbonation reaction time and the mean particle size and variance of particle size distributionof CaCO₃, were investigated. The results showed that the CaCO₃ particles with the mean size of 15~40nm and very narrow size distribution were produced,and the carbonation reaction time is 4～10 folds shorter than that of using conventional carbonation method.

Keywords：high-gravity reactive precipitation ;nanometer ;calcium carbonate