晶种分解法制取超细氢氧化铝粉实验

Ultrafine Aluminum Hydroxide Powder Prepared by Seed Crystal Decomposition

实验用钡盐深度净化工业铝酸钠溶液，硅量指数A／S＞3500 Fe_2O_3痕量．加入自制高活性超细晶种分解沉积，酸洗除钠后制得粒径＜2μm的高纯超细氢氧化铝．

Ihdustrial sodium aluminate solution was used, which was deeply purified by barium salt .The silican index of the solution is A/S ＞ 3500 with trace Fe_2O_3. Then high active ultrafine seed crytalwas added to the solution for decomposition and precipitation. After pickling and sodimum remoying ,the so- called ultrafinr and high pure aluminium hydroxide with grain size ＜ 2μm prepared .