Effect of αk on aluminium trihydroxide crystallization from sodium aluminate soluntion under Ultrasound

摘要：

The crystallization with ultrasound intensification of aluminium trihydroxide from seeded sodium aluminate solution is investigated under various αk (the molecule ratio of Na2O/Al2O3). The results indicate that ultrasound can enhance precipitation ratio of seeded sodium aluminate solution. However the increase of αk is not useful to improvement of the precipitation under ultrasound. For example, when the αk is 1.45、 2.0 and 2.5, the precipitation ratio increase 2.5%、2.0% and 0.9%, respectively under ultrasound. The mechanism of enhancement on precipitation of alumina hydrate is acoustic cavitations that enhance or alter reactions process of aluminate ions, Al(OH)-4. The mass percentage of <45μm of precipitation production with the initial αk at 2.0, which is biggest, is increased by 4.3 % under ultrasound.

作者: Yu-sheng Wu Yan-ping Qu Mo Liu Ming-chun Li

作者单位: Shenyang University of Technology, School of Materials science and Engineering, Liaoning 110870, P.R.China

会议类型: 国际会议

会议名称: The 6th International Conference on Physical and Numerical Simulation of Materials Processing(第六届材料与热加工物理模拟及数值模拟国际学术会议 ICPNS 2010)

会议地点: 桂林

会议语种:英文

页码: 1-5

在线出版日期: 2010-11-16（万方平台首次上网日期，不代表论文的发表时间）