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Combustion of Wet Coal Processing Waste and Coal Slime as Components of Fuel Slurries

机译：湿煤加工废料燃烧煤渣作为燃料浆料组成的燃烧

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摘要

Coal processing waste is generated annually in large volumes by the coal exporting countries. More than 70% of run-of-mine coal is enriched. At the same time, typical coal processing waste (slime, flotation waste, mid-coal and tailings) make up at least 10-15% of the raw coal mass. Approximately 220-300 million tons of coal processing waste is generated annually at coal-preparation plants in Russia and China. The results of experimental researches in recent years illustrate the growing interest in such wastes as promising energy components. In this paper, we performed a comparative analysis of the main physical properties, ignition and combustion characteristics of several types of coal processing waste. The comparison is made for typical flotation waste (filter cakes or coal slime) generated in Russia and China. It is shown that for wastes from different countries the ignition delay times differ by no more than 50% and the heat of combustion by 9-15%. Concentrations of main anthropogenic emissions were determined. Generalization is made using criterion expressions to illustrate the advantages and disadvantages of coal processing waste incineration in comparison with pulverized coal combustion.
机译：煤炭加工废物每年由煤炭出口国的大量生成。超过70％的矿井煤炭丰富。同时，典型的煤炭处理废物（粘液，浮选废物，中煤和尾矿）占原煤的至少10-15％。每年在俄罗斯和中国的煤炭制作植物中每年产生约220-300万吨煤处理废物。近年来实验研究的结果说明了这种废物的兴趣日益增长，作为有前途的能源组分。在本文中，我们对多种煤处理废物的主要物理性质，点火和燃烧特性进行了比较分析。对俄罗斯和中国产生的典型浮选废物（滤饼或煤泥）进行了比较。结果表明，对于不同国家的废物，点火延迟时间不超过50％，燃烧热量为9-15％。确定主要人体发射的浓度。概括使用标准表达式来说明与粉煤燃烧相比，煤处理废焚烧的优点和缺点。

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