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Modeling Energetic Effectiveness and Breakage Intensity in Mining and Processing Circuits on Limestone Crushing in HPGR

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  • Agnieszka Saramak

    (Department of Environmental Engineering, Faculty of Civil Engineering and Raw Materials Economy, AGH University of Krakow, 30-059 Krakow, Poland)

  • Daniel Saramak

    (Department of Environmental Engineering, Faculty of Civil Engineering and Raw Materials Economy, AGH University of Krakow, 30-059 Krakow, Poland)

Abstract

This article refers to the aspects of energy consumption and comminution effectiveness in the mineral processing sector through the evaluation of limestone crushing in a high-pressure grinding roll. The investigative program included a series of crushing tests on limestone samples in a laboratory High Pressure Grinding Rolls (HPGR) press device. The tests were carried out in the scheme of factorial experiment with three levels of pressure (Fsp) and three levels of material moisture (M). The major finding was to determine energetic models referring to consumption of energy and reduction in Bond work index Wi, designed as a function of operational pressure in HPGR and material moisture. The other investigative results encompassed models on fineness effectiveness and throughput. The models appeared statistically significant and showed relationships both with pressure and moisture. The results of the investigations showed that Bond work index Wi decreases when the Fsp increases, but Wi increases as the moisture content decreases. The calculated models also showed an increase in unit energy consumption in the press together with increasing of Fsp and moisture. The models for throughput and finest particle content in HPGR product showed in turn that increasing of Fsp and M results in decreasing of the productivity.

Suggested Citation

  • Agnieszka Saramak & Daniel Saramak, 2024. "Modeling Energetic Effectiveness and Breakage Intensity in Mining and Processing Circuits on Limestone Crushing in HPGR," Energies, MDPI, vol. 18(1), pages 1-12, December.
    • Handle: RePEc:gam:jeners:v:18:y:2024:i:1:p:122-:d:1557742
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    References listed on IDEAS

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    1. Saramak, Daniel & Leśniak, Katarzyna, 2024. "Impact of HPGR operational pressing force and material moisture on energy consumption and crushing product fineness in high-pressure grinding processes," Energy, Elsevier, vol. 302(C).
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