Effects of Anions on Deep Desilication of Sodium Aluminate Solution
WANG Ya-jing LI Hong-liang， PANG Chang-jian ZHAI Yu-chun ZHANG Zheng
College of Applied Chemisty, Shenyang University of Chemical Technology Applied Chemistry College Shenyang Institute of Chemical Technology Applied Chemistry College Shenyang Institute of Chemical Technology School of materials and metallurgy, Northeastern University College of Material and Metallurgy , Northeast University
Abstract： The influences of anions (SO42-, CO32- and Cl-) on deep desilication of sodium aluminate solution were investigated. The optimal conditions of desilication were studied by examining the temperature, time, anion and Al2O3 concentration, ak and stirring speed. Under the conditions of 95℃, Al2O3 150 g/L, ak 1.5, and stirring speed 867 r/min, after 110 min the silica module was above 3815, and at the Al2O3 concentration of 30 g/L, the silica module was above 3943, 3545 and 3221. When the concentration of anion was 0~70 g/L, deep desilication was promoted by SO42-, but deep desilication was promoted firstly and then inhibited by CO32- and Cl-. Silica residue was analyzed by XRD, and the desilication mechanism by SO42-, CO32- and Cl- clarified.
王雅静 李宏亮 庞常健 翟玉春 张征. 阴离子对铝酸钠溶液深度脱硅的影响[J]. , 2011, 11(2): 239-243.
WANG Ya-jing LI Hong-liang; PANG Chang-jian ZHAI Yu-chun ZHANG Zheng. Effects of Anions on Deep Desilication of Sodium Aluminate Solution. , 2011, 11(2): 239-243.
2011, Vol. 11 
