Motion behavior of particles in air-solid magnetically stabilized fluidized beds for separation

作     者：Song Shulei a,,Zhao Yuemin a,Luo Zhenfu a,Tang Ligang b a School of Chemical Engineering and Technology,China University of Mining & Technology,Xuzhou 221116,China b Coal Mining and Designing Department,Tiandi Science & Technology Company Co.Ltd.,Beijing 100013,China 

作者机构：School of Chemical Engineering and Technology China University of Mining & Technology Xuzhou 221116 China Coal Mining and Designing Department Tiandi Science & Technology Company Co. Ltd. Beijing 100013 China 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2012年第22卷第5期

页      面：725-729页

核心收录：

学科分类：0709[理学-地质学] 0819[工学-矿业工程] 0808[工学-电气工程] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 0818[工学-地质资源与地质工程] 0708[理学-地球物理学] 0807[工学-动力工程及工程热物理] 0815[工学-水利工程] 081701[工学-化学工程] 0813[工学-建筑学] 0814[工学-土木工程] 

基　　金：supported by the National Natural Science Foundation of China (Nos. 51134022 and 51174203) the Key Project of Chinese National Programs for Fundamental Research and Development (No. 2012CB214904) the National Natural Science Foundation of China for Innovative Research Group (No. 50921002) the Natural Science Foundation of Jiangsu Province (No. BK2010002) the Fundamental Research Funds for the Central Universities (Nos. 2010QNB11 and 2010ZDP01A06) 

主　　题：磁稳定流化床 颗粒沉降 运动行为 分离 MSFB 沉降位移 示踪粒子 沉降试验 

摘      要：In order to study the settling mechanism of particles in an air-solid magnetically stabilized fluidized bed(MSFB) for separation,we carried out free settling and quasi-zero settling tests on the tracing *** results show that the main resistance forces as the tracing particles settled in an air-solid MSFB were motion resistance force and yield *** motion resistance and yield forces greatly hindered the free settling of the particles by greatly decreasing the acceleration for settling process of the *** acceleration decreased from 3022.62 cm/s 2 to zero in 0.1 s,and in the end,the particles stopped in the air-solid *** yield force on particles increased with increasing the magnetic field intensity,resulting in decrease of the quasi-zero settling ***,the yield force on particles decreased with increasing the fluidized air velocity,leading to increase of the quasi-zero settling *** the structure and operating parameters of the air-solid MSFB were set up,the yield stress on particles stopped in an air-solid MSFB was a function of diameter and density of *** settling displacements of equal diameter particles increased with increasing their densities,and the settling displacements of equal density particles increased with increasing their diameters.