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Communication dans un congrès

Improvement of the selective comminution of a low-grade schist ore containing cassiterite using a high voltage pulse technology

Abstract : Electric pulse fragmentation (EPF) is an innovative technology that uses high-voltage pulsed power (HVPP) for the selective comminution of the treated material. Highly energetic electrical pulses are used to fracture rocks at mineral grain boundaries, resulting in extensive micro-cracks and/or complete fragmentation of the processed particles depending on the applied energy. In this study, the EPF technology was applied to a low-grade schist ore containing cassiterite, in order to investigate its influence on the selectivity of the fragmentation. The impact of EPF on subsequent comminution steps was studied by combining either the EPF technology or jaw crushing (used here as conventional crushing) with subsequent impact crushing. The results confirmed the potential of the EPF treatment for a selective fragmentation of the schist ore. This gave the potential advantages of reducing the total energy consumption in the comminution circuit and of improving the recovery of cassiterite during concentration processes.
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Communication dans un congrès
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https://hal-brgm.archives-ouvertes.fr/hal-01801352
Contributeur : Kathy Bru <>
Soumis le : lundi 28 mai 2018 - 14:03:03
Dernière modification le : lundi 18 mai 2020 - 09:54:04

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  • HAL Id : hal-01801352, version 1

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Citation

Kathy Bru, Daniel Parvaz. Improvement of the selective comminution of a low-grade schist ore containing cassiterite using a high voltage pulse technology. XXIX International Mineral Processing Congress – IMPC 2018, Sep 2018, Moscou, Russia. ⟨hal-01801352⟩

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