Ore crushing in the high-pressure roller-press as a modelling object under stochastic properties of feed materials

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.224939

Keywords:

crushing, roller-press, ore beneficiation, distribution function, simulation, deformation, stochasticity

Abstract

The results of improving ore crushing in a high-pressure roller-press are presented. Application of a roller-press enables higher crushing efficiency due to both power saving and reduction of sizes of ore crush products to release mineral aggregates. Ore disintegration by compressive strain prevails among currently applied crushing methods. Disintegration occurs not only due to the compressive, but also to the shear strain. Considering smaller power consumption of the shear strain than that of the compressive strain, it is concluded that roller-press application is quite efficient.

Simulation of crushing by using the Bond law frequently applied in practice is under consideration. It is essential to consider the stochasticity of the ore flow to be crushed. Presentation of this flow as a random figure by transforming it by the Bond crushing law results in a probabilistic characteristic of the crushing result. This characteristic enables finding properties of the crush product and probabilistic formulation of the problem of improving the crushing process by setting a relevant functional. To apply the results obtained to practical uses, the crushing process is simulated. The theoretical results are confirmed by setting the stochastic properties of the input ore flow by means of Rosen-Rammler’s law followed by statistical substantiation of the conducted calculations in Mathcad. After stimulation and considering stochastic properties of the feed ore flow, the solution of the optimal stabilization problem reveals that stabilization is achieved, while dispersion in relation to the stabilization goal reduces sharply almost five-fold

Author Biographies

Tetyana Oliinyk, Kryvyi Rih National University

Doctor of Technical Sciences, Professor, Head of Department

Department of Mineral Processing and Chemistry

Pavlo Nikolaienko, Kryvyi Rih National University

Postgraduate Student

Department of Mineral Processing and Chemistry

Kostiantyn Nikolaienko, Kryvyi Rih National University

PhD, Associate Professor

Department of Mineral Processing and Chemistry

Maksym Oliinyk, Kryvyi Rih National University

PhD, Senior Lecturer

Department of Mineral Processing and Chemistry

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Published

2021-02-19

How to Cite

Oliinyk, T., Nikolaienko, P. ., Nikolaienko, K., & Oliinyk, M. (2021). Ore crushing in the high-pressure roller-press as a modelling object under stochastic properties of feed materials . Eastern-European Journal of Enterprise Technologies, 1(1 (109), 54–62. https://doi.org/10.15587/1729-4061.2021.224939

Issue

Vol. 1 No. 1 (109) (2021): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2021 Татьяна Олейник , Павел Николаенко , Константин Николаенко , Максим Олейник

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