ISSN 1008-5548

CN 37-1316/TU

Journal Online  2014 Vol.20
<Go BackNo.4

Experimental Research on Ultrafine Grinding of Desulphurization Ash by Kinetic Energy Mill with Superheated Steam

SHI Yan a , WANG Jia b , ZHANG Liuxiang a , LAI Xiaolin a , WANG Qintao a

(a. Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education; b. School of Life Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)

Abstract: The ultrafine desulphurization ash was prepared by kinetic energy mill with superheated steam. The effect of classifier speed, crushing pressure and steam inlet temperature on the particle size and output of the ultrafine desulphurization ash was investigated. The morphology of the ultrafine desulphurization ash was analyzed. The results show that when the classifier speed is 1 500 r/min, the output of ultrafine desulphurization ash is decreased by 34.1% than that of classifier speed of 900 r/min. The particle size of ultrafine desulphurization ash is diminished and the particle size range is narrowed. When the grinding pressure is 0.5 MPa, the output of ultrafine desulphurization ash is increased by 31.8% than that of grinding pressure of 0.25 MPa. When the steam inlet temperature is 300 ℃, the output of ultrafine desulphurization ash is increased by 46.8% than that of steam inlet temperature of 200 ℃. The particle size and particle size range of the ultrafine desulphurization ash decrease when the grinding pressure or the steam inlet temperature is improved. In the actual product ion process, the grinding pressure and steam inlet temperature should not be too high and should be controlled in a reasonable range according to different materials. The desulphurization ash grinded by kinetic energy mill with superheated steam has good morphology features.

Keywords: kinetic energy mill; desulphurization ash; speed of classifier; grinding pressure

中图分类号:TK09         文献标志码:A

文章编号:1008-5548(2014)04-0048-04

DOI:10.13732/j.issn.1008-5548.2014.04.011

收稿日期:2013-11-28, 修回日期:2013-12-25,在线出版时间:2014-08-28。

基金项目:“十二五”国家科技支撑计划项目,编号:2011BAA04B04;西南科技大学研究生创新基金资助项目,编号:13ycjj24。

第一作者简介:石岩(1989—),男,硕士研究生,研究方向为超细粉体制备与固废资源化利用。电话:15281108693,E-mail:shaunjames@126.com。