St. Petersburg Mining University (St. Petersburg, Russia):

Beloglazov I. I., Associate Professor, Candidate of Engineering Sciences, beloglazov@spmi.ru

Yusupov G. A., Postgraduate Student.

REC «Mekhanobr-Tekhnika» (St. Petersburg, Russia):
Stepanyan A. S., Technical Director, stepanyan_as@npk-mt.spb.ru

CADFEM CIS JSC (St. Petersburg, Russia):
Feoktistov A. Yu., Director of Rocky Business Development, Andrey.Feoktistov@cadfem-cis.ru

This study describes a model of the crushing process in a jaw crusher developed using the Discrete Element Method (DEM). The use of advanced software enabled a detailed study of the impact produced by crusher jaws on the material crushed. All modeling stages are detailed, starting with the preparation of a geometric model, parameter design for multivariate modeling and parameter calibration for a mathematical model with account of the experimental data, and ending with modeling of variations in the operating parameters of the crusher. This work was carried out with reference to the prototype of a new design developed by «Mekhanobr-Tekhnika» REC, which was used in the experimental studies. The experimental results obtained were compared with the computer model with account of all specific features of the machine operation and the nature of particle fracture and particle size distribution. The analysis presented in the paper demonstrates the correlation between the results of the physical experiment and the computer simulation data.
The research was carried out with the support of the grant issued by the Russian Science Foundation (project No. 17-79-30056).

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