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针对钢球磨煤机的制粉系统,在实验室条件下,通过调整载煤量、钢球装载量及煤的磨制时间,确定了MS-500试验用磨煤机的最佳载煤量和最佳钢球装载量.结果表明:随着载煤量的增加,磨煤机出力、驱动功率均呈现先增大后减小的趋势;最佳载煤量/钢球量随钢球量的增加逐渐降低;在最佳载煤量下,磨煤单耗随钢球量的增加先减小后增大.此外,对磨煤机理进行分析,确定了冲击、破碎、研磨在时间上的先后性,提出了磨煤机筒体分三段式的优化构想.
According to the pulverizing system of ball mills, the optimal coal load of MS-500 test mills and the coal grinding time are determined by adjusting the load of coal, the load of steel balls and the grinding time of coal under the laboratory conditions The results show that with the increase of coal load, the output and drive power of coal pulverizer firstly increase and then decrease. The optimum load of coal and the amount of steel ball depend on the amount of steel ball With the increase of the amount of steel balls, the coal consumption decreases first and then increases.In addition, the mechanism of coal grinding is analyzed to determine the sequence of impact, crushing and grinding in time In this paper, the optimization idea of three-stage coal mill barrel is put forward.