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首页> 外文期刊>Transactions of the Indian Institute of Metals >Recovery of Clean Coal from Washery Rejects by Flotation
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Recovery of Clean Coal from Washery Rejects by Flotation

机译：通过浮选从选煤厂废渣中回收清洁煤

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Attempts have been made to recover the additional clean coal from the rejects generated by the heavy media bath of a coking coal washery in Eastern India. As received rejects sample contains around 18.68 % volatile matter, 43.24 % ash and 38.08 % fixed carbon on dry basis. Beneficiation study by conventional cell flotation has been carried out to examine the possibility of reducing the ash content of the sample. But liberation of clean coal from rejects is required before subjecting to any separation process. The reject coal is ground to different particle size and separated by froth flotation. An attempt has been made to systematically analyse the factors influencing the flotation process using the technique of statistical design of experiments. Studies have been conducted at different operating conditions. It is possible to get clean coal with 19.68 % ash at 32.45 % yield and 45.57 % combustible recovery from the reject coal with 43.24 % ash.
机译：已经进行了尝试从印度东部炼焦煤洗选厂的重介质浴中产生的废料中回收更多清洁煤的方法。收到的废品样品中含有约18.68％的挥发性物质，43.24％的灰分和38.08％的固定碳（以干基计）。已经进行了通过常规细胞浮选的选矿研究，以研究降低样品中灰分含量的可能性。但是在进行任何分离过程之前，必须从废弃物中释放出洁净煤。将废煤磨成不同的粒度，并通过泡沫浮选进行分离。已经尝试使用实验的统计设计技术来系统地分析影响浮选过程的因素。已经在不同的操作条件下进行了研究。可以从灰分为43.24％的废煤中获得灰分为19.68％的洁净煤，产率为32.45％，可燃回收率为45.57％。

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