多级喷雾碳化法制备纳米碳酸钙工艺研究

无机材料学报

多级喷雾碳化法制备纳米碳酸钙工艺研究

徐旺生; 何秉忠; 金士威; 宣爱国

武汉化工学院化工系武汉 430073

收稿日期:2001-02-07 修回日期:2001-04-04 出版日期:2001-09-20 网络出版日期:2001-09-20

Preparation of Nanometer Calcium Carbonate by Multistage Spray Carbonation

XU Wang-Sheng; HE Bing-Zhong; JIN Shi-Wei; XUAN Ai-Guo

Dept. of Chem. Eng.; Wuhan Institute of Chemical Technology; Wuhan 430073; China

Received:2001-02-07 Revised:2001-04-04 Published:2001-09-20 Online:2001-09-20

摘要/Abstract

摘要： 研究了多级喷雾碳化法制备纳米碳酸钙的工艺，并详细讨论了雾化、碳化条件及添加剂量等对纳米碳酸钙粒径的影响．碳化后的沉淀物经真空干燥，其原始粒径约为３０ｎｍ．经表面改性处理，可得到粒径在３０～４０ｎｍ范围的活性纳米碳酸钙粉体材料．

关键词: 纳米碳酸钙, 喷雾碳化, 粒径, 传质系数

Abstract: The preparation process of nanometer calcium carbonate(CaCO₃) by multistage spray carbonation was studied. The effects of the conditions of spray carbonation and additive dosage on the average particle size of nanometer CaCO₃ were discussed systematically. The primary particle size of carbonated sediment was about 30nm by vacuum desiccation. Then the active nanometer CaCO₃particles ranged from 30nm to 40nm were obtained by means of surfaction.

Key words: nanometer calcium carbonate, multistage spray carbonation, particle size, mass transfer coefficient

中图分类号:

TB383

徐旺生,何秉忠,金士威,宣爱国. 多级喷雾碳化法制备纳米碳酸钙工艺研究[J]. 无机材料学报.

XU Wang-Sheng,HE Bing-Zhong,JIN Shi-Wei,XUAN Ai-Guo. Preparation of Nanometer Calcium Carbonate by Multistage Spray Carbonation[J]. Journal of Inorganic Materials.

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