考虑扼流层效应的圆锥破碎机颗粒形状预测改进模型

Zhang Wei, Wang Jixin, Yun Xiangjun
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引用次数: 1

摘要

阻流水平是影响颗粒物料下落过程的关键因素之一,与圆锥破碎机的破碎效率密切相关。本文分析了颗粒在节流位附近的运动特性,指出了节流位以下的单颗粒破碎现象。基于多区法,建立了改进的颗粒形状预测模型。该模型考虑了阻流作用下的单颗粒破碎和充填作用下的颗粒间破碎的复合破碎行为,以及各破碎区颗粒形态的变化和粒度分布。在PYG-B1735圆锥破碎机上进行了试验,验证了改进模型的有效性。改进后的模型为生产效率估计和性能优化提供了理论依据。
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The Improved Model of Particle Shape Prediction Considering the Choke-Level Effect for Cone Crusher
The choke-level is one of the key factors that influence the falling process of the granular materials which is closely related to the crushing efficiency in the cone crusher. In this paper the motion characteristics of the particles near the choke-level have been analyzed and the phenomenon of single particle breakage below the choke level is pointed out. Based on the multi-zone method, an improved particle shape prediction model is established. In this model, the compound breaking behavior which includes the single particle breakage under the choke-level effect and the inter-particles breakage under the fill-feed, the transformation of particle shape and the particle size distribution in each crushing zone are considered. Tests on the PYG-B1735 cone crusher are conducted in order to validate the improved model. The improved model provides a theoretical foundation for the productivity estimation and the performance optimization.
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