JI Yonghua1 , QIN Bingke1 , ZHAO Yuemin2 , LUO Zhenfu2
(1. Department of Chemistry and Chemical Engineering, Liupanshui Normal University, Liupanshui 553004, China； 2. School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221008, China)
Abstract： The viscosity of air dense medium fluidized bed was measured by the method of rotation. The factors influencing the viscosity of fluidized bed were analyzed. The mathematical model between those factors and the viscosity was proposed. The results indicate that the bed viscosity increases with an increase in mean particle size, decreases with an increase in gas velocity, and increases with the increase of bed height and moisture content. When the mass fraction of coal powders is larger than 12%, the bed viscosity significantly increases. When the mass fraction of coal powders is 17%, the bed fluidization becomes poor.
Keywords: air dense medium fluidized bed; viscosity of fluidized bed; magnetite powder
中图分类号：TQ021.1,TD91 文献标志码：A
文章编号：1008-5548（2014）05-0010-05
DOI:10.13732/j.issn.1008-5548.2014.05.003
收稿日期：2014-03-15， 修回日期：2014-05-09，在线出版时间：2014-10-11。
基金项目：贵州省六盘水市科技计划项目，编号：52020-2012-01-09-08；贵州省煤炭资源清洁高效利用科研实验平台项目，编号：黔科平台[2011]4003；贵州省教育厅特色重点实验室项目，编号：(2011):278。
第一作者简介：籍永华(1981—)，女，硕士，讲师，研究方向为空气重介质流化床干法选煤。 E-mail：haizhigong@126.com。
