摘要
The secondary nucleation during gibbsite precipitation with seeds from sodium aluminate solution processed by ultrasound was examined by particle size distribution(PSD) analyses. Experiments indicate that at low temperature(<65 ℃) and with low frequency ultrasound, the precipitation efficiency and also the secondary nucleation can be improved. Solution processed by low frequency ultrasound has more nuclei than common liquor does at low temperature. At )55 ℃,) precipitation efficiency can be improved by 5.31%, and the effect promoted by low frequency ultrasound decreases with the increase of temperature.
The secondary nucleation during gibbsite precipitation with seeds from sodium aluminate solution processed by ultrasound was examined by particle size distribution(PSD) analyses. Experiments indicate that at low temperature(<65 ℃) and with low frequency ultrasound, the precipitation efficiency and also the secondary nucleation can be improved. Solution processed by low frequency ultrasound has more nuclei than common liquor does at low temperature. At )55 ℃,) precipitation efficiency can be improved by 5.31%, and the effect promoted by low frequency ultrasound decreases with the increase of temperature.
出处
《中国有色金属学会会刊：英文版》
CSCD
2004年第2期401-405,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(5 98740 3 1)supportedbytheNationalNaturalScienceFoundationofChina,project(G1999064923)supportedbyNationalKeyFundamentalResearchandDevelopmentProgramofhina
关键词
超声波
铝土矿
铝酸钠溶液
形核
晶种分解
氧化铝
sodium aluminate solution
ultrasound
particle size distribution
secondary nucleation
