从分析现行三种料层挤压粉磨的工作机理入手,提出影响粉磨稳定性的结构因素是粉磨通道截面收缩率不同,进一步阐述了通道截面宽度特征值数学模型,导出三种料层挤压粉磨截面收缩率表达式,提出在临界钳入压力角处,三种挤压通道的截面收缩率相等的论断。并以此为据,计算立磨、筒辊磨的临界钳入压力角,与现行粉磨的理论与实践引证,得出结论。 Based on the analysis of the working mechanism of the three current extrusion crushing pulverizers, the structural factors affecting the stability of the pulverizing pulverizer are proposed. The shrinkage rates of the pulverizing channels are different. The mathematical models of the width of the channel cross - Squeeze the expression of shrinkage rate grinding cross section, put forward at the critical pressure into the pressure angle, the three kinds of extrusion passage cross section shrinkage is equal. Based on this, the critical pressure angle of vertical mill and can roller mill was calculated, and the theory and practice of current mill mill were used to draw the conclusion.