Risk Prediction for Spontaneous Combustion of Sulfide Ores in Stope

摘要：

Spontaneous combustion of sulfide ores in stope poses a serious safety problem in metal mines. A typical sulfide ore sample was collected from Dongguashan Copper Mine in China; its ignition point was tested by an experimental setup and the corresponding value was approved to be above 285℃. Based on the theory of heat transfer, the dynamic mathematical model that depicts the oxidation and self-heating temperature of sulfide ores was established. Combining with the locale boundary and initial conditions in the stope, ANSYS software was applied to simulate the 2dimensional temperature field, and the pictures of temperature distribution at different times were presented. The research results show that temperature increases with the extension of time that ores exposed to the air; the maximum temperature reaches 208℃in 90 days which is far below the ignition point temperature, so spontaneous combustion risk during a production period is low in this mine.

关键词： sulfide ores spontaneous combustion ignition point temperature field numerical simulation prediction

作者: YANG Fuqiang WU Chao PAN Wei YE Xiaohui CHEN Song

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 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 586-592

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）