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Journal ArticleDOI

Analysis of the selection function of comminution kinetics

30 Sep 1972-Journal of Chemical Engineering of Japan (The Society of Chemical Engineers, Japan)-Vol. 5, Iss: 3, pp 308-310
TL;DR: In this article, the basic integro-differential equation describing comminution process is analytically solved by the use of a certain form of selection function and breakage function, and the rate constant of the selection function is considered in relation to the stress field produced within a powder bed and to the strength of material crushed.
Abstract: The basic integro-differential equation describing comminution process is analytically solved by the use of a certain form of selection function and breakage function. The result agrees well with previous experience. The rate constant of the selection function is considered in relation to the stress field produced within a powder bed and to the strength of material crushed. A resulting equation expressing the selection function as a function of particle size, magnitude of force applied and some operational variables as well as material properties is compared with reference data.
Citations
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Journal ArticleDOI
TL;DR: In this article, a tumbling ball mill was used to measure a selection function for five solid materials and the effects of a grinding ball diameter and a feed particle size on the grinding rate constant of the materials were investigated.

45 citations

Journal ArticleDOI
TL;DR: In this article, an analysis of the selection function for mills using balls as grinding media is presented, assuming that a particle caught by two colliding balls will be ground only if the ball impact generates or activates at least one single crack within the particle causing the fragmentation.

25 citations

Journal ArticleDOI
TL;DR: In this paper, the authors described the mixing process of powders in an agitation type of solid mixer based on a modified comminution model and expressed the mixing procedure for the fine and adhesive powders by means of the disintegration process of the tracer agglomerates (ironoxide) in the bulk powder bed (calcium carbonate) in this model.

8 citations

Journal ArticleDOI
TL;DR: In this article, the relationship between Vickers hardness, Hv, and the mean particle size after grinding or the grinding throughput rate, Q, was measured and discussed, and it was suggested that the grinding behavior depended on the hard part in the toner sheets.

6 citations

Journal ArticleDOI
M.A. Berube1, Y. Berube1
TL;DR: In this paper, a relationship is obtained to predict the influence of particle load on the selection parameters of the discretized batch grinding equation, in terms of two partial probabilities of impact and of breakage efficiency per impact, with the latter accounting for the energy distribution of tumbling balls.

5 citations