DONG Haipei1 ， CHENG Guihai1 ， LI Xiaoquan1 ， XU Zhonghui2 ， ZHANG Qinbin1
（1.School of Resources and Metallurgy， Guangxi University， Nanning 530004， China； 2.School of Resources and Environmental， Southwest University of Science and Technology， Mianyang 621010， China）
Abstract：The Godbert-Grenwald furnace and minimum ignition temperature of dust layer testing apparatus were used to investigate minimum ignition temperature of dust cloud (MITC) and minimum ignition temperature of dust layer (MITL) of the spherical titanium powder with five different particle sizes. The function between MITC-MITL and particle size, and the functionbetween MITC and concentration were fitted. The results showed that the increase of spray pressure has no obvious effect on the ignition temperature of titanium dust cloud, the increase of mass concentration makes MITC decrease firstly and then increase in the form of quadratic function, the increase of particle sizes make MITC increase in the form of quadratic function, and make MITL increase in the form of exponential function, MITC is higher than MITL when the particle sizes is the same.
Keywords：titanium powder; dust cloud; dust layer; minimum ignition temperature
文章编号：1008-5548（2018）05-0048-05
DOI：10.13732/j.issn.1008-5548.2018.05.008
收稿日期：2017-10-08， 修回日期：2017-11-17，在线出版时间：2018-10-16。
基金项目：国家自然科学基金项目，编号：51404200。
第一作者简介：董海佩（1993—），女，硕士研究生，研究方向为粉尘爆炸。E-mail：709832524@qq.com。
通信作者简介：程贵海（1963—），男，硕士，副教授，硕士生导师，研究方向为工程爆破。E-mail：253355676@qq.com。徐中慧（1983—），男，博士，副教授，硕士生导师，研究方向为环境安全。E-mail：xuzhonghui@swust.edu.cn。
