(1. 武汉理工大学 资源与环境工程学院，武汉 430070；
2. 武汉理工大学 矿物资源加工与环境湖北省重点实验室，武汉 430070)
摘 要: 利用Reid总体平衡微积分分批磨碎动力学方程，研究石墨-方解石物料混合磨碎时，石墨的磨碎动力学行为。结果表明：对碎裂速率函数Si而言，混合磨碎时石墨组分的碎裂速率函数Si表现为与时间t相关，即ln mi与t的关系曲线呈非线性关系。同时，模型仿真结果表明，石墨组分表现的非线性碎裂结果的模拟值与实验值吻合度较高；而石墨组分混合磨碎的碎裂分布函数bij则与单独磨碎时的碎裂分布函数bij基本相同。该结论可作为石墨磨碎生产实践的理论指导。
关键字: 石墨；混合物料；磨碎；碎裂参数
（1. College of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China;
2. Hubei Key Laboratory of Mineral Resources Processing and Environment, Wuhan University of Technology,
Wuhan 430070, China）
Abstract:The batch grinding kinetic equation based on Reid balance calculus was used to study the grinding dynamics behavior of graphite in a mixed material of graphite-calcite. The results show that, for the function on the broken rate Si, the fracture rate of graphite components in function expression is related to time t, which shows the nonlinear relationship between ln mi and t. The simulation values and experiment values of graphite component nonlinear fracture results are well agree with each other. For the fracture distribution function bij, the fracture distribution functions of graphite components in the mixed material grinding and separate mineral grinding are basically the same. The aforementioned conclusion can take theoretical guide for the production practice of graphite grinding.
Key words: graphite; mixed material; grinding; fracturing rate function
