利用岩粉防治遗煤自燃可行性研究
发布时间：2018-09-10 12:18
【摘要】：为探讨用岩粉防治遗煤自燃的可行性,用理论与试验相结合的方法,研究混有岩粉的遗煤自燃过程。首先,由理论分析可知,岩粉的混入主要对遗煤自燃起阻止作用;将试验分成3组,观测各试验煤样的氧化升温过程。试验结果表明,混入岩粉的量及粒径对遗煤自燃过程有较大影响;当岩粉量大于临界岩粉量时,岩粉的混入能抑制遗煤自燃;当岩煤比达到1∶1及以上时,遗煤基本失去自燃的危险;当混入岩粉粒径大于临界粒径、接近峰值粒径时,混入岩粉对遗煤自燃的防治效率最高。在合理的岩粉量及粒径条件下,用岩粉防治遗煤自燃理论上是可行的。
[Abstract]:In order to discuss the feasibility of using rock powder to prevent the spontaneous combustion of residual coal, the process of spontaneous combustion of residual coal mixed with rock powder was studied by combining theory with experiment. Firstly, according to the theoretical analysis, the mixing of rock powder mainly prevents the spontaneous combustion of coal, and the experiment is divided into three groups to observe the oxidation and heating process of each coal sample. The results show that the amount and particle size of mixed rock powder have a great influence on the spontaneous combustion process of residual coal, when the amount of rock powder is larger than the critical amount of rock powder, the mixing energy of rock powder can inhibit the spontaneous combustion of residual coal, and when the ratio of rock to coal reaches 1:1 or more, When the particle size of mixed rock powder is larger than the critical particle size and approaching the peak particle size, the control efficiency of mixed rock powder on spontaneous combustion of residual coal is the highest. Under the condition of reasonable rock powder quantity and particle size, it is theoretically feasible to prevent coal spontaneous combustion with rock powder.
【作者单位】： 辽宁工程技术大学安全科学与工程学院;辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室;
【基金】：国家自然科学基金资助(51404131,51374121)
【分类号】：TD752.2
[Abstract]:In order to discuss the feasibility of using rock powder to prevent the spontaneous combustion of residual coal, the process of spontaneous combustion of residual coal mixed with rock powder was studied by combining theory with experiment. Firstly, according to the theoretical analysis, the mixing of rock powder mainly prevents the spontaneous combustion of coal, and the experiment is divided into three groups to observe the oxidation and heating process of each coal sample. The results show that the amount and particle size of mixed rock powder have a great influence on the spontaneous combustion process of residual coal, when the amount of rock powder is larger than the critical amount of rock powder, the mixing energy of rock powder can inhibit the spontaneous combustion of residual coal, and when the ratio of rock to coal reaches 1:1 or more, When the particle size of mixed rock powder is larger than the critical particle size and approaching the peak particle size, the control efficiency of mixed rock powder on spontaneous combustion of residual coal is the highest. Under the condition of reasonable rock powder quantity and particle size, it is theoretically feasible to prevent coal spontaneous combustion with rock powder.
【作者单位】： 辽宁工程技术大学安全科学与工程学院;辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室;
【基金】：国家自然科学基金资助(51404131,51374121)
【分类号】：TD752.2
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