Fire-Extinguishing Techniques Research on Spontaneous Combustion of a Sulfide Iron Ore Dump in Mining Stope

摘要：

Spontaneous combustion is one of the serious problems in the mining of sulfide ore deposits. In this paper, the oxidation and self-heating mechanism of sulfide ores was presented. In view of a sulfide iron ore dump that catches fire in the mining stope, both infrared thermometer and thermal imager were used to measure the surface temperature on the ore dump. Integrating with its practical in-situ conditions, water blended with chemical suppressant (water glass) is planned to inject into the dump to inhibit the spontaneous combustion and lower the temperature. ANSYS software was applied to predict the fwe-extinguishing effects, and temperature field distribution of the ore dump at different time was gained. By the average temperature variation curve of the fire area, it shows that it will cost approximately 200 days to reduce the average temperature to normal, which meets the demand of fire-extinguishing.

关键词： sulfide iron ore dump spontaneous combustion oxidation and self-heating mechanism fire-extingulshing techniques research

作者: YANG Fuqiang WU Chao HU Hanhua LI Zijun LIU Hui

作者单位: School of Resources and Safety Engineering,National Research Center of Safety Science and Technology for Metal Mines,Central South University,Changsha 410083,Hunan,China

会议类型: 国际会议

会议名称: The 2008 International Symposium on Safety Science and Technology(2008年安全科学技术国际会议)

会议地点: 北京

会议语种:英文

页码: 869-874

在线出版日期: 2008-09-24（万方平台首次上网日期，不代表论文的发表时间）