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Analysis of Grinding Rate Constant on a Stirred Ball Mill Using Discrete Element Method Simulation
Author(s) -
Kim Seongsoo,
Chung Hanshik,
Choi Heekyu
Publication year - 2009
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2008.02897.x
Subject(s) - grinding , ball mill , ball (mathematics) , discrete element method , rotational speed , coordination number , materials science , mill , constant (computer programming) , mathematics , mechanics , metallurgy , physics , chemistry , mathematical analysis , classical mechanics , computer science , programming language , ion , quantum mechanics
The results of discrete element method simulation were compared with actual grinding experimental results. The grinding rate constant K can be expressed as K = a exp( bn ), where n is the rotation speed. To investigate the correlation between K and the simulation results, a new factor, the calculated force, was defined as F cal =average force acting on a ball coordination number. K could then be expressed as K = a ′ F cal + b ′ and is thus one‐dimensionally proportional to F cal K was found to be correlated with the forces acting on a ball and its contact points. Experimental results confirmed that F cal is suitable for use as a factor for expression of K .

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