Abstract

A steeply inclined vibrational screen may be used to sort coal batch (moisture content 11.2%) with a high content of the ≤3 mm class (70.7%). The influence of the screen’s structural and dynamic parameters on its performance is investigated. On the basis of experiment design, industrial research is undertaken, and the results are statistically analyzed. The efficiency of screening, the clogging of the screening surface, and the enlargement of the target product are determined as a function of the inclination of the screening surface, its type, and the acceleration of the drum vibrations. The optimal design is a steeply inclined screen with a freely supported screening surface (50° inclination), when the acceleration of the drum vibrations is 33 m/s². In that case, the efficiency of coal sorting is 78%, with clogging of the screening surface and up to 1% enlargement of the target product.

中文翻译：

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焦化厂选煤中的陡倾振动筛

摘要

陡峭的振动筛可用于分选含量≤3毫米（70.7％）的高含量煤（水分含量11.2％）。研究了屏幕的结构和动态参数对其性能的影响。在实验设计的基础上，进行了工业研究，并对结果进行了统计分析。筛分的效率，筛分表面的堵塞和目标产品的增大取决于筛分表面的倾斜度，类型和滚筒振动的加速度。最佳设计是当滚筒振动的加速度为33 m / s ²时，具有可自由支撑的筛分表面（倾斜50°）的陡倾斜筛子。在这种情况下，煤的分选效率为78％，而筛分表面会堵塞，目标产品的膨胀最多可达到1％。