(1. 武漢理工大學(xué) 資源與環(huán)境工程學(xué)院，武漢 430070；
2. 武漢理工大學(xué) 礦物資源加工與環(huán)境湖北省重點(diǎn)實(shí)驗(yàn)室，武漢 430070)
摘 要: 利用Reid總體平衡微積分分批磨碎動(dòng)力學(xué)方程，研究石墨-方解石物料混合磨碎時(shí)，石墨的磨碎動(dòng)力學(xué)行為。結(jié)果表明：對(duì)碎裂速率函數(shù)Si而言，混合磨碎時(shí)石墨組分的碎裂速率函數(shù)Si表現(xiàn)為與時(shí)間t相關(guān)，即ln mi與t的關(guān)系曲線呈非線性關(guān)系。同時(shí)，模型仿真結(jié)果表明，石墨組分表現(xiàn)的非線性碎裂結(jié)果的模擬值與實(shí)驗(yàn)值吻合度較高；而石墨組分混合磨碎的碎裂分布函數(shù)bij則與單獨(dú)磨碎時(shí)的碎裂分布函數(shù)bij基本相同。該結(jié)論可作為石墨磨碎生產(chǎn)實(shí)踐的理論指導(dǎo)。
關(guān)鍵字: 石墨；混合物料；磨碎；碎裂參數(shù)
（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
