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对《优质高效选煤厂试行标准》中提出的浮选数量效率的计算方法进行了分析,建议以浮选的可燃物回收率来取代浮选数量效率,并论证了其可行性。 相似文献
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Screening was widely used in many sectors of industry. However, it is rather incomplete to the cognition of the sieving process for us due to the daedal separation process involving interactions of thousands of particulates. To address this problem, two dimensional numerical simulation of batch sieving process was performed by adopting advanced discrete element method (DEM), which is one of the highly nonlinear digitized dynamic simulative methods and can be used to reveal the quantitative change from particle dimension level. DEM simulation results show that the jam phenomena of sieve-plate apertures of the "blinding particles" in the screen feed can be demonstrated vividly and results also reveal that the velocity of particle moving on the screen plate will vary along with the screen length. This conclusion will be helpful to the design and operation of screen. 相似文献
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计算筛分效率时需要确定筛上物与筛下物的分级粒度界限,即分级粒度。分级粒度不同的划定原则使得与之对应的筛分效率具有不同的意义。在实际筛分作业中应使依照不同原则划定的分级粒度要尽可能地接近直至相等,这样就可以通过对筛机的作业参数进行简单的调而收到显著的经济效益。 相似文献
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