An Investigation on Mining Recovery, Processing Ratio and Utilization ratio of Coal Mines in China
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摘要: 介绍了我国煤矿开采回采率、原煤入选率和利用率"三率"调查结果.我国煤矿资源当年原煤产量2493959.4 kt.大型矿山数量占全国总数的8.00%,原煤产量占全国总量的60.71%.我国煤矿采区回采率为83.29%,原煤入选率为41.83%,视褐煤入选后原煤入选率为50.42%;调查矿山煤炭共伴生资源利用率平均值为30.21%.Abstract: The paper introduces results of a comprehensive investigation on coal mines all over Chi-na.Statistical data concerning mining recovery , processing recovery , utilization ratio were ana-lyzed.total output of raw coal was about 2493959.4 kt.Large scale coal mines were accounting for 8 .00%in all in China and production capacity was accounting for 60 .71%.Ming recovery was 83 .29%, the processing ratio of raw ore was 41 .83%, if the lignite was processed the processing ratio of raw ore was 50 .42%;the utilization ratio of associated minerals was 30 .21%.
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