分级浓度对磨矿分级回路产品粒度分布的数值模拟  

Numerical Simulation of Product Particle Size Distribution Under Grader Concentrations in Grinding-classification Circuit

作　　者：吴彩斌[1] 周斌[1] 石贵明[1] 杨昊[1] 鄢发明 周意超[1] 邹春林[1] 

机构地区：[1]江西理工大学江西省矿业工程重点实验室,江西赣州341000

出　　处：《有色金属（选矿部分）》2016年第2期60-64,共5页Nonferrous Metals（Mineral Processing Section）

基　　金：江西省自然科学基金资助(20122BAB206024)

摘　　要：分级机工况参数变化对磨矿分级回路的影响过程较为复杂,难以建立数学模型进行分析。本论文利用高斯模型,对分级机补加水量与磨矿分级回路最终产品粒度分布进行了数值模拟,建立了两者之间的罗逊-莱蒙勒尔粒度特性方程。对该方程,通过MATLAB编程能够解出表征最终产品的γ-100+10μm(浮选合格粒级)、γ-74μm(细度)、γ-10μm(过粉碎)和Dp(平均粒度)质量指标值,并作出该方程的粒度分析曲线图。因此选择合适的分级浓度即调节分级补加水量,可快速预测最终磨矿分级产品粒度组成情况。It is difficult to build mathematical models for analysis since the influencing process of grading mechanic parameters on grinding-classification circuit is complex. This paper make use of Gaussian model to establish Rosin-Rammler characteristic equation based on particle size distribution numerical simulation in the final product of additional water and grinding-classification circuit. To the equation,we can get quality indexes that can represent γ- 100 ＋ 10 μm,（ flotation qualified grade） γ- 74 μm,（ fineness） γ- 10 μm（ over grinding） and Dp（ average grain size） in final product by the MATLAB programming,also can we obtain a particle size analytical curve graph.Therefore,choosing the right grading concentrations can quickly predict granularity composition of the final product in grinding-classification circuit.

关 键 词：分级浓度 补加水量 粒度特性方程 数值模拟 MATLAB 

分 类 号：TD921.4[矿业工程—选矿] TD454