Separation efficiency of alumina particles in Al melt under high frequency magnetic field

来源期刊：中国有色金属学报(英文版)2010年第1期

论文作者：郭庆涛 曹志强 张忠涛 李廷举 金俊泽 HONG Chun-pyo

文章页码：153 - 157

Key words：Al melt; alumina particles; electromagnetic separation; high frequency magnetic field; separation efficiency

Abstract: The effects of separation time and magnetic induction intensity on the separation efficiency of alumina particles with diameters varying from 30 to 200 μm in aluminum melt were investigated. The experimental results show that the particle- accumulated layer is formed in the periphery of the solidified specimen when the diameter of the separated molten metal, the magnetic induction intensity and the separation time are 10 mm, 0.04 T and 1 s, respectively. When the separation time is 2 s, the particle-accumulated layer can be observed obviously and the separation efficiency is about 80%. There are few alumina particles in the inner of the solidified specimen when the separation time is 3 s. The separation efficiency higher than 85% can be achieved when the separation time is longer than 3 s. When the magnetic induction intensity is 0.06 T, the visible particle-accumulated layer can be formed in 1 s and the separation efficiency is higher than 95%. The experimental results were compared with the calculated results at last.

基金信息：the National Natural Science Foundation of China
the Natural Science Foundation of Liaoning Province, China