在AlCl_3和Al(NO_3)_3-尿素体系中制备Al(OH)_3微球颗粒  

Preparation of ultra-fine spherical Al(OH)_3 particles by homogeneous precipitation method from AlCl_3 and Al(NO_3)_3 solution in the presence of urea

作　　者：陈滨[1] 吴晓华[1] 李小斌[1] 彭志宏[1] 刘桂华[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《广东有色金属学报》2006年第2期116-119,共4页Journal of Guangdong Non-Ferrous Metals

基　　金：国家973计划项目(2005CB623702)

摘　　要：以AlCl3和Al(NO3)3为原料,尿素为沉淀剂,草酸铵为添加剂,采用均匀沉淀法制备出超细球形Al(OH)3颗粒.通过SEM和粒度分布手段表征了产品的形貌和大小特征.结果表明,所制备的Al(OH)3颗粒呈球状且分布较均匀,平均粒径为0.85μm.同时对球形颗粒形成的机理进行了初步分析.该制备工艺简单,易实现工业化生产.The preparation of spherical Al（OH）3 particles is investigated by homogeneous precipitation method in the presence of urea adding ammonium oxalate in this paper. The powder products prepared in this method are characterized by SEM and granularity distribution chart. The results show that Al（OH）3 particles is spherical with narrow size distribution and mean size of 0.85μm. Meanwhile, the formation mechanism of spherical particles in the AlCl3 and Al（NO3）3 solutions is also analyzed in the paper. The operation and equipment of this preparation method are simple, and it has broad market prospect.

关 键 词：均匀沉淀法 AL(OH)3 微球颗粒 

分 类 号：TF111.34[冶金工程—冶金物理化学]