Effects of magnetic field on fluidization properties of magnetic pearls  

作　　者：Maoming Fan Zhenfu Luo Yuemin Zhao Qingru Chen Daniel Tao Xiuxiang Tao Zhenqiang Chen 

机构地区：[1]Department of Mining Engineering, University of Kentucky, 230 Mining and Mineral Resources Building, Lexington, KY 40506, USA [2]School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221008, Jiangsu, China

出　　处：《China Particuology》2007年第1期151-155,共5页

基　　金：The authors wish to thank the National Natural Science Foundation of China （No. 90510002 and No. 90210035） for financing the project.

摘　　要：An experimental study of the influence of external magnetic field on the fluidization behavior of magnetic pearls was carried out. Magnetic pearls are a magnetic form of iron oxide that mainly consists of Fe2O3 which are recovered from a high-volume power plant fly ash from pulverized coal combustion. Due to its abundance, low price and particular physical and chemical properties, magnetic pearls can be used as a heavy medium for minerals or solid waste dry separation based on density difference. This paper introduces the properties of magnetic pearls and compares the performance of magnetic pearls fluidised bed operation with or without an external magnetic field. Experimental results show that an external magnetic field significantly improves the fluidization performance of magnetic pearls such as uniformity and stability.An experimental study of the influence of external magnetic field on the fluidization behavior of magnetic pearls was carried out. Magnetic pearls are a magnetic form of iron oxide that mainly consists of Fe2O3 which are recovered from a high-volume power plant fly ash from pulverized coal combustion. Due to its abundance, low price and particular physical and chemical properties, magnetic pearls can be used as a heavy medium for minerals or solid waste dry separation based on density difference. This paper introduces the properties of magnetic pearls and compares the performance of magnetic pearls fluidised bed operation with or without an external magnetic field. Experimental results show that an external magnetic field significantly improves the fluidization performance of magnetic pearls such as uniformity and stability.

关 键 词：Magnetic pearls Magnetic field Fluidization properties Gravity separation 

分 类 号：O482.5[理学—固体物理]