WANG Qintaoa , CHEN Haiyana , XU Hailunb , LAI Xiaolinc , SHI Yana
( a. School of Environment and Resource; b. School of Civil Engineering and Architecture; c. School of Manufacturing Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China)
Abstract： Using superheated steam with temperature of 250 ℃ and inlet pressure of 0.25 MPa supplied by a power plant, ultrafine circulating fluidized bed ashes were prepared by LNSJ-350A type steam jet mill. The results show that the average particle size of the ultrafine circulating fluidized bed ashes is 4.42 μm. The yield of ultrafine circulating fluidized bed ashes is 10.8 t/h. 0.93 t steam is consumed and the electricity consumption is 19.97 kW·h per ton of circulating fluidized bed ashes. The strength and soundness conform to national standard requirements when the products are blended by a mass fraction of 10% for preparing composite Portland cement with the strength grade of 32.5.
Keywords: superheated steam; steam jet mill; ultrafine circulating fluidized bed ashes
中图分类号：TK09 文献标志码：A
文章编号：1008-5548（2014）05-0071-04
DOI:10.13732/j.issn.1008-5548.2014.05.018
收稿日期：2013-12-31， 修回日期：2014-02-19，在线出版时间：2014-10-11。
基金项目：国家科技支撑计划项目，编号：2011BAA04B04；四川省科技厅科技项目，编号：11ZS2006；四川省教育厅基金项目，编号：11ZB193。
第一作者简介：王沁淘（1990—），女，硕士研究生，研究方向为粉体设备与工业通风除尘技术。 E-mail:wang_qintao@163.com。
通信作者简介：陈海焱（1964—），男，博士，教授，研究方向为气流粉碎、气流分级与通风除尘技术。 E-mail:chenhai-yan@163.com。
