中国非金属矿工业导刊Issue(5)：16-18,44,4.
CFB灰中Fe的浸出行为及动力学研究
Study on Leaching Behavior and Kinetics of Iron From Circulating Fluidized Bed Ash
王金龙 1任瑞晨 1陈晨 1杨黎1
作者信息
- 1. 辽宁工程技术大学矿业学院,辽宁阜新123000
- 折叠
摘要
Abstract
Using the circulating fluid bed ash (CFB ash) generated in gangue power plant, this article studies the influencing factors in the acid leaching behavior and kinetics of ferric oxide from the circulating fluidized bed ash. The experimental result shows that the concentration of hydrochloric acid of 20.2%, the temperature 110℃, reaction time 1 .0h, and liquid-to-solid ratio of 4:1, the leaching rate of ferric oxide is 91.74%. The acid heating and leaching process of CFB ash conforms to the typical "core shrinking model of reaction" in a certain time. Its equation of kinetics of reaction can be described by 1-(1- α )1/3=k' t, the apparent reaction order is 0.999 2, the activation energy of the reaction is 42.063kJ/mol, while the process speed rate is controlled by the chemical reaction rate.关键词
循环流化床灰/酸浸/浸出率/动力学Key words
circulating fluidized bed ash/ acid leaching/ leaching rate/ dynamics分类
资源环境引用本文复制引用
王金龙,任瑞晨,陈晨,杨黎..CFB灰中Fe的浸出行为及动力学研究[J].中国非金属矿工业导刊,2011,(5):16-18,44,4.
