ABSTRACT

Rigid-flex elastic screening methods are widely employed in the efficient utilization of moist coal as they have high efficiency. Here, the synergy between the total excitation force (F_t), frequency (f), and disequilibrium excitation force coefficient (F_de) on the disequilibrium excitation rigid-flex elastic screening process was investigated. The results showed that the order of significance of the investigated parameters on screening performance was: F_t > f > F_de. Mathematical correlation models for the screening efficiency (η) and total misplaced materials (M_o) were established, and were used to obtain the optimum parameter values of F_t = 6.81 kN, f = 14.10 Hz, and F_de = 1.16. Experiments were conducted on moist coal samples from different mines to validate the screening performance. It was found that for all three samples, η was > 85%, and M_o was < 4.90%, hence, the accuracy of the model was verified, and good screening performance was obtained.

摘要

刚柔弹性筛分方法因其效率高而被广泛应用于湿煤的高效利用中。在这里，研究了总激振力（F _t）、频率（f）和不平衡激振力系数（F _de）对不平衡激励刚柔弹性筛选过程的协同作用。结果表明，所考察的参数对筛选性能的显着性顺序为：F _t > f >  F _de。筛选效率 ( η ) 和总错位材料 ( M _o )的数学相关模型) 建立，并用于获得F _t  = 6.81 kN、f = 14.10 Hz 和F _de  = 1.16 的最佳参数值。对来自不同矿山的潮湿煤样进行了实验，以验证筛分性能。结果表明，3个样品的η均>85%，Mo < _4.90 %，验证了模型的准确性，获得了良好的筛选性能。