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| Experimental study on impact crushing of particles smaller than 13.2 mm |
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Received:April 10, 2014
Revised:April 11, 2014
Accepted:April 11, 2014
Published Online:April 20, 2015
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| DOI： |
| KeyWord:Drop weight test; AG/SAG; material characterization parameters; impact crushing; particle-size effect |
| Author | Institution |
| HE Mao |
State Key Laboratory of Mineral Processing,BGRIMM |
| LIU Jian-yuan |
State Key Laboratory of Mineral Processing,BGRIMM |
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| Abstract: |
| JK drop weight test is a method used for determining ore comminution parameters. The particle size range of the feed for the standard drop weight test is -63.0 13.2mm. The material parameters obtained from the drop weight test is applied to particles of all size by default, when the software JKSimMet is used to simulate an autogenous/semi-autogenous grinding process. In this study, experiments were conducted to investigate the impact crushing characteristics of particles smaller than 13.2mm of a gold ore from eastern China. The results showed that a particle-size effect exists by impact crushing of this ore material, the anti-impact ability of the particle increases as the particle size decreases. In addition it was found that the number of crushing stages by sample preparation has an influence on the result of the impact crushing. |
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