化学工程2011，Vol.39Issue(12)：69-72,99,5.
磷矿颗粒流态化特性的实验研究
Experimental study on fluidization characteristics of phosphate ore particles
摘要
Abstract
The fluidization characteristics of phosphate ore particles with sizes varying from 54 to 600 μm and densities of 2 252-2 665 kg/m3 were experimentally investigated in a fluidized bed of 1 m in height and 42 mm in interior diameter. The results indicate that the fluidization behaviors of phosphate ore particles strongly depend on their densities and mean sizes. The bed expansion ratio of the particles decreases with increasing mean sizes. The phosphate ore particles belonging to Geldart B can be fluidized smoothly. However, the particles in the mean size of 82 μm, belonging to Geldart A, are difficult to be fluidized, similar to the fluidization behavior of Geldart C. Large interparticle forces lead to plugging and channeling. The experimental values of minimum fluidization velocity were obtained by measuring the pressure drop across the bed. Several classical correlations were used to fit the experimental data of minimum fluidization velocity, and Thonglimp correlation for Geldart B agrees reasonably with the experimental data. A new correlation in explicit form was developed for better model of the minimum fluidization velocity.关键词
流态化/磷矿/最小流化速度/磷酸/窑法磷酸Key words
fluidization/ phosphate ore/ minimum fluidization velocity/ phosphoric acid/ kiln phosphoric acid process分类
化学化工引用本文复制引用
田昊一,康明雄,刘根炎,李茜,吴元欣,刘少文..磷矿颗粒流态化特性的实验研究[J].化学工程,2011,39(12):69-72,99,5.基金项目
国家科技支撑计划项目(2007BAB08B10) （2007BAB08B10）
教育部"矿物处理过程强化"创新团队资助项目(IRT0974) （IRT0974）
