摘要
研究成功了制取非晶质高活性种子的方法,活性晶种能够破坏铝酸纳溶液的稳定性,诱导出一个突然自发产生超细氢氧化铝晶粒的过程。采用两段分解工艺制备了超细氢氧化铝,研究了种子比、温度、精液中苛性Na2O与Al2O3分子比αK的影响。控制分解过程既有次生晶核的生成又要保持一部分晶粒适当长大。超细氢氧化铝产品粒度保持在1.5～2μm范围,产品比表面积4m3/g左右。
The method which took the non-crystal high-activity seed successfully was developed. The active Seed crystal could destroy the aluminic acid to accept the solution the stability. The spontaneous process which produced superfine aluminum hydroxide crystal grain suddenly was induced. Two section decomposition method was used to prepare the superfine aluminum hydroxide, and the effects of the seed ratio,temperature,solution αK influence were studied. By controlling the decomposition process, the secondary nucleus was produced and a part of crystal grains suitable growthed. The particle size of superfine aluminum hydroxide products was 1.5 -2.0 um, the specific surface area was 4 m^3/g.
出处
《中国粉体技术》
CAS
2008年第5期26-29,共4页
China Powder Science and Technology
关键词
超细氢氧化铝微粉
非晶质高活性种子
种子分解
superfine aluminum hydroxide fine powder
non-crystal high-activity seed
two section of seed decomposition
