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Journal of Mining Science

, Volume 54, Issue 2, pp 202–211 | Cite as

Effect of Cryogenic Pre-Treatment on Breakage Characteristics of Rocks

  • R. BisaiEmail author
  • S. Goel
  • A. Hatwal
  • S. K. Pal
  • A. Majumder
  • T. K. Nandi
Rock Failure
  • 7 Downloads

Abstract

Improvement of energy efficiency in comminution of rocks using various pretreatment methods is being explored worldwide. This paper presents experimental data on breakage characteristics of granite and sandstone using cryogenic pre-treatment. The samples were treated with varying duration of immersion in liquid nitrogen. Combined pretreatment using oven heating followed by quenching in liquid nitrogen were also explored. The results indicate that using cryogenic pretreatment uniaxial tensile strength of granite can be decreased by more than 40% while in uniaxial compressive strength about 28% reduction is possible. For sandstone as much as 33% reduction in uniaxial compressive strength was observed.

Keywords

Cryogenic pre-treatment comminution granite sandstone 

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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • R. Bisai
    • 1
    Email author
  • S. Goel
    • 1
  • A. Hatwal
    • 1
  • S. K. Pal
    • 1
  • A. Majumder
    • 1
  • T. K. Nandi
    • 2
  1. 1.Department of Mining EngineeringIIT KharagpurIndia
  2. 2.Cryogenic Engineering CenterIIT KharagpurIndia

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