Self-Heating Measurement of Sulfide Ore Heap and Three-dimensional Reconstruction of Temperature Field
To reveal the self-heating characteristics of sulfide ore heap, ore samples from a pyrite mine in China were taken as experimental materials, and the temperature variations of the measuring points of simulated ore heap were measured with an experimental apparatus designed by the authors.Temperature fields of the ore heap at different periods were simulated based on three-dimensional reconstruction method.The results indicate that the relationship between temperature of the ore heap and time accords with characteristics of exponential curve model.The exponential curve model can be used to predict temperature of the ore heap preliminarily.Ore heap responding to the induced self-heating process has obvious difference.Area closer to the heat source responds faster and its response effect is more obvious.During the induced self-heating process, temperature field evolution of the ore heap presents significant spatial difference.The whole increasing extent of temperature increases at first, then decreases with the passage of time.Area with the maximum increasing extent of temperature makes a move from center position to extemal region.With the increase of distance to heat source, the trend of average temperature increasing rate includes three stages: decreasing stage, increasing stage and decreasing stage.The self-heating layer can be determined with the distance to heat source fiom 45.8258 to 67.8233 mm.
sulfide ores self-heating process temperature field three-dimensional reconstruction self-heating layer
PAN Wei WU Chao LI Zijun LIU Jiwen
School of Resources and Safety Engineering, Central South University, Changsha 410083, China Tianjin Port & Channel Engineering Co.,Ltd, Tianjin 300457, China
国际会议
The 2016 International Symposium on Safety Science and Technology(2016安全科学与技术国际会议)
昆明
英文
534-540
2016-10-17（万方平台首次上网日期，不代表论文的发表时间）