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New testing methodology for the quantification of rock crushability: Compressive crushing value (CCV)

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Abstract

Crushing is a size reduction process that plays a key role in both mineral processing and crushing–screening plant design. Investigations on rock crushability have become an important issue in mining operations and the manufacture of industrial crusher equipment. The main objective of this research is to quantify the crushability of hard rocks based on their mineralogical and mechanical properties. For this purpose, the mineralogical, physical, and mechanical properties of various hard rocks were determined. A new compressive crushing value (CCV) testing methodology was proposed. The results obtained from CCV tests were compared with those from mineralogical inspections, rock strength as well as mechanical aggregate tests. Strong correlations were found between CCV and several rock and aggregate properties such as uniaxial compressive strength (UCS), the brittleness index (S20), and aggregate impact value (AIV). Furthermore, the relationship between the mineralogical properties of the rocks and their CCVs were established. It is concluded that the proposed testing methodology is simple and highly repeatable and could be utilized as a pre-design tool in the design stage of the crushing process for rock quarries.

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Acknowledgements

This work was financially supported by Zonguldak Bülent Ecevit University (No. 2016-98150330-01).

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  1. Department of Mining Engineering, Zonguldak Bülent Ecevit University, 67100, Zonguldak, Turkey

    Ekin Köken & Ahmet Özarslan

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  1. Ekin Köken
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  2. Ahmet Özarslan
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Correspondence to Ekin Köken.

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Köken, E., Özarslan, A. New testing methodology for the quantification of rock crushability: Compressive crushing value (CCV). Int J Miner Metall Mater 25, 1227–1236 (2018). https://doi.org/10.1007/s12613-018-1675-7

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  • DOI: https://doi.org/10.1007/s12613-018-1675-7

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