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文中介绍了摩擦静电送煤的技术原理和路径，并利用这一技术研究了优质洁净煤的制备，分析了诸因素对分选结果的影响，指出了今后的研究重点和应用前景。
In this paper, the technical principle and route of friction electrostatic coal feeding are introduced. The preparation of high quality clean coal is studied by using this technology. The influence of various factors on the sorting results is analyzed. The future research focuses and application prospects are also pointed out.