圆锥破碎机破碎质量的粒度和粒形数学建模

Mathematical Modeling of Particle Size and Particle Shape of Crushing Quality for Cone Crusher

为定量分析计算圆锥破碎机的破碎物料质量以支持产品的优化设计,基于层压破碎理论对圆锥破碎机破碎腔进行分层,建立改进的圆锥破碎机破碎过程的操作模型,深入研究破碎产品粒度分布模型和粒形的计算方法,将粒形模型与粒度分布模型相结合来描述层压破碎过程中物料破碎的本质原因。利用岩石力学试验系统对层压破碎过程进行试验,建立以压缩比和粒度分布系数为参数的粒度的选择函数、破碎函数和粒形的选择函数、破碎函数的数学模型。结合PYGB1121型圆锥破碎机实际结构参数及工作参数,对其破碎过程中的物料粒形和粒度的变化进行求解,得到圆锥破碎机的粒度分布曲线和针片率随压缩比和粒度分布系数变化的关系,为圆锥破碎机破碎过程中破碎生产率的动态优化提供理论模型。

In order to quantitatively analyze and calculate crushing quality and support for cone crusher optimization design, an improved cone crusher manipulation model based on the inter-particle breakage theory is built by studying the crushing process of cone crushers, and calculation methods of particle size distribution and particle shape are under studied. The combination of the particle size distribution model and the flakiness rate model for predicting particle shape, uncovers the essential causes of inter-particle breakage of cone crushers. A rock mechanics testing system is used to do experiment to study the inter-particle breakage process of cone crushers. Mathematical models of particle size selection function, particle size breakage function, particle shape selection function and particle shape breakage function are established and parameterized by compression ratio and particle size distribution. With structural parameters and working parameters of the PYGB 1121 cone crusher as input, the variation of the particle shape and size can he calculated, and the particle size distribution curve and the flakiness changed with compression ratio and production size distribution are obtained. The outcome provides theoretical models for dynamic optimization of crushing process.