振动分级筛是利用振动的筛面将颗粒大小不同的混合物，按粒度进行分级的机械。
振动分级筛在矿井毛煤转化为入洗原煤过程中是保证入洗原煤和产品原煤质量(粒度合格)的关键设备。
Vibration classification screen is the key to ensure the quality of washing raw coal and product raw coal in the process of changing from run-of-mine coal to washing raw coal.
本文根据往复振动筛筛选分级的要求及特点，建立了往复振动筛运动参数优化设计的数学模型。
According to requirements for grading and characteristics, this paper presents the mathematical model of optimum movement parameter designing for vibrating screens.
直线振动细筛是一种分级效率较高的分级设备。
Linear vibratory fine screen is a sizing device with higher sizing efficiency.
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