DING Yanhua，CHEN Chuanhui， BAI Yang， YE Xuchu
（State Key Laboratory of Materials-oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, China）
Abstract： Zinc carbonate hydroxide was prepared from zinc dust via ammonia leaching at room temperature, which was calcinated to obtain ultrafine zinc oxide by suspension technology. Particle size and morphology of the products calcinated in accumulation state and suspension state were investigated by technique of particle size analysis, X-ray diffraction and scanning electron microscopy. The results show that when the temperature is 500 ℃ and the gas volume flow is 2.5 L/min, the particle size d90 of zinc oxide reaches the minimum of 3.14 μm. Compared with accumulation state calcination, the suspension calcination decreases the particle size of products and reduces agglomeration， which benefits the industrial production.
Keywords: zinc carbonate hydroxide; ultrafine zinc oxide; suspension calcination; accumulation state calcination
中图分类号：TQ132.4 文献标志码：A
文章编号：1008-5548（2015）04-0063-04
DOI:10.13732/j.issn.1008-5548.2015.04.014
收稿日期：2014-10-01， 修回日期：2014-10-24，在线出版时间：2015-08-26。
基金项目：长江学者和创新团队发展项目，编号：IRT1146。
第一作者简介：丁燕华（1989—），女，硕士研究生，研究方向为材料学。E-mail：buerdianxia@njtech.edu.cn。
通信作者简介：叶旭初（1957—），男，博士，教授，博士生导师，研究方向为粉体加工与计算机模拟。 E-mail: yexuchu@njtech.edu.cn。
