磨机钢球直径的选择历来主要是凭经验 ,考虑的因素不全面 ,故误差常常很大 .段希祥从破碎力学原理出发推导出理论性较强的球径计算半理论公式 .该公式在实际应用中表明 ,对于中磨及细磨极为准确 ,但对于粗磨 ,误差还是偏大 ,尽管仍比传统的方法准确 .为此我们从岩矿的力学性质开始研究该公式的修正 ,通过试验室试验及工业试验 ,得到了不仅能准确计算中磨、细磨 ,而且能准确计算粗磨球径的方法 Ball mill diameter selection has always been based mainly on experience, consider the factors are not comprehensive, so the error is often large.Duan Xixiang derived from the broken mechanics principle of theoretical calculation of the spherical half-theoretical formula.Spherical formula in the practical application Shows that for the mill and fine grinding is extremely accurate, but for coarse grinding, the error is still large, although still more accurate than the traditional method.To this end we start from the mechanical properties of rock and mine to amend the formula, through the laboratory test And industrial tests, obtained not only accurate calculation of the mill, fine grinding, but also accurate calculation coarse grinding ball diameter method