Paper Title:
Simulation on Extrusion Comminution Model of Roller Press
  Abstract

How to predict the relationship among particle size and among product size, to establish the relationship between the granularity and working parameters in the process of grinding and to determine the optimum operating parameters. With proposing BS squeeze crush model by L. Bass and the idea of roll surface division as the material uneven extrusion force are adopted. Based on field experiments the experimental data is analyzed, the select function and the breakage functions are fitted with MATLAB software, and obtaining their model. The comminution model is determined by the roller division. We obtain the model parameter through the experimental data. Through model analysis shows: the relationship between particle breakage and energy absorption, namely the smaller size of the same power, the lower broken; the breakage diminishes with the decrease of particle size ratio and it will be tending to a small constant when the smaller particle size ratio. The breakage functions rapidly decrease within ratio of between 0.2-0.7. This shows: the energy consumption will rapidly increase when the particle size of less than 0.2 in broken; the selection diminish with the decrease of particle size. Pressure (8-9MPa) should be the most appropriate value.

  Info
Periodical
Advanced Materials Research (Volumes 156-157)
Edited by
Jingtao Han, Zhengyi Jiang and Sihai Jiao
Pages
1702-1707
DOI
10.4028/www.scientific.net/AMR.156-157.1702
Citation
X. W. Cheng, J. Liu, Q. Z. Ding, L. M. Song, Z. L. Wang, "Simulation on Extrusion Comminution Model of Roller Press", Advanced Materials Research, Vols. 156-157, pp. 1702-1707, 2011
Online since
October 2010
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$32.00
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