摘要
碳酸钙是一种用途广泛的无机材料,其形貌和结构对它的性能有重要影响。本文采用沉淀反应方法,利用乙二胺四乙酸(EDTA)添加剂作为有机模板,制备球状方解石型碳酸钙,考察了不同温度对碳酸钙结晶和聚集行为的影响,进而对其反应机理进行了初步探讨,并利用SEM和XRD等测试手段对产物进行了表征。结果表明,本试验成功的制备出了纯度较高的球状碳酸钙粉末,且低温条件有利于高纯度球状碳酸钙粒子的结晶。
Calcium carbonate is a kind of inorganic material, which is widely used. The morphology and structure of it have significant effect on its performance. In this paper, the spherical fine power calcium carbonate was prepared using ethylene diamine tetraacetic acid as organic template. And the reaction mechanism was discussed. The microstructures of products were characterized by SEM and XRD. The results show that the high purity spherical fine calcium carbonate was prepared. Furthermore, Low temperature condition is beneficial to the high purity spherical calcium carbonate particle crystallization.
出处
《中国非金属矿工业导刊》
2012年第6期28-30,共3页
China Non-Metallic Minerals industry
基金
国家基础研究计划项目(2011CB411901)
关键词
形貌控制
球状碳酸钙
反应机理
微粉
control of morphology
spherical fine calcium carbonate
reaction mechanism
fine power
