Computer Simulation of Closed-circuit Grindings with High-pressure Roller Mill
The comminution in a high-pressure roller mill is modeled by an energy-based population balance approach considering three aspects of breakage taking place in the active zones of the mill: the interparticle breakage in the high-compression zone, the breakage at the edges of the rolls, and the pre-breakage in the acceleration zone. Together with an appropriate model of classification, this model can be used to simulate steady-state performance of closed-circuit grindings with high-pressure roller mill. After a brief description of the basic modeling approach, the algorithm of the steady-state calculation for a generalized grinding-classification circuit is presented, from which the circuit configurations commonly met in industrial practice can be derived. With an iron ore as feed material for example, simulation results are shown and discussed in respect of circulating load,specific energy consumption and product fineness for closed-circuit grindings under various operating conditions. The effects of stressing intensity, working gap, classifier parameters as well as circuit configuration on the overall circuit performance are investigated systematically by means of computer simulation.
Comminution High pressure grinding rolls Closed-circuit grinding Modelling Simulation
J. Y. Liu
State Key Laboratory of Mineral Processing, Beijing General Research Institute of Mining and Metallurgy, Beijing, China
国际会议
XXIV International Mineral Processing Congress(第24届国际矿物加工大会)
北京
英文
329-340
2008-09-24（万方平台首次上网日期，不代表论文的发表时间）