A fundamental investigation on the breakage of a bed of PGM ore particles: An attainable region approach, part 2

N. Hlabangana, E. Nhira, N. Masayile, P. M. Tembo, G. Danha

Research output: Contribution to journalArticle

Abstract

In this study, we investigate the effect of drop weight shape, bed mass and drop height on the impact breakage of a run-of-mine platinum group metals (PGM) ore collected from the Great Dyke region in Zimbabwe. The three drop weight shapes used were spherical balls, semi-ellipsoids and cubes. We then applied a model-free optimization tool called the Attainable Region (AR) technique to analyze and optimize the impact energy on a bed of PGM particles. We observed that different drop weight shapes produce products of different levels of fineness, hence an interesting area for research. A higher mass fraction of a preselected desired product fineness (−850 + 150 μm) was obtained from use of spherical balls and semi-ellipsoids compared to cubes. We also observed that the bed mass had a significant effect on the impact breakage process and an optimal bed mass gave result to a maximum amount of the desired size class.

Original languageEnglish
Pages (from-to)326-331
Number of pages6
JournalPowder Technology
Volume346
DOIs
Publication statusPublished - Mar 15 2019

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)

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