利用巖粉防治遺煤自燃可行性研究
發(fā)布時間:2018-09-10 12:18
【摘要】:為探討用巖粉防治遺煤自燃的可行性,用理論與試驗相結合的方法,研究混有巖粉的遺煤自燃過程。首先,由理論分析可知,巖粉的混入主要對遺煤自燃起阻止作用;將試驗分成3組,觀測各試驗煤樣的氧化升溫過程。試驗結果表明,混入巖粉的量及粒徑對遺煤自燃過程有較大影響;當巖粉量大于臨界巖粉量時,巖粉的混入能抑制遺煤自燃;當巖煤比達到1∶1及以上時,遺煤基本失去自燃的危險;當混入巖粉粒徑大于臨界粒徑、接近峰值粒徑時,混入巖粉對遺煤自燃的防治效率最高。在合理的巖粉量及粒徑條件下,用巖粉防治遺煤自燃理論上是可行的。
[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.
【作者單位】: 遼寧工程技術大學安全科學與工程學院;遼寧工程技術大學礦山熱動力災害與防治教育部重點實驗室;
【基金】:國家自然科學基金資助(51404131,51374121)
【分類號】: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.
【作者單位】: 遼寧工程技術大學安全科學與工程學院;遼寧工程技術大學礦山熱動力災害與防治教育部重點實驗室;
【基金】:國家自然科學基金資助(51404131,51374121)
【分類號】:TD752.2
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