Effect of design and operational parameters on particle morphology in ball mills

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NSTL
Elsevier

外文摘要：Different factors involving in grinding of ore cause various breakage mechanisms. These different mechanisms differ the morphology of ground particles. In this study, the effect of ball mill types, feed sizes, and ball surface area have been investigated on the morphology of ground quartz particles using MBL cruise optical microscope and Olympus E-510 camera. Measured two-dimensional particle projection was expressed mathematically such as circularity, roundness and aspect ratio by ImageJ software. >20,000 particles were morphologically measured for image analysis. Results show that circularity and roundness of ground particles are enhanced in an ordinary ball mill equipped with smooth liner (OBM). While higher aspect ratio of ground particles are achieved in cylindrical ball mill equipped with wavy liner (CBM). Consequently, the dominant breakage mechanism for OBM and CBM are abrasion and impact, respectively. Circularity and roundness values of coarse-grained ground particles are more than fine-grained particles. The increase of ball surface area causes the increase of circularity as well as roundness values and the decrease of aspect ratio value. (C) 2017 Published by Elsevier B.V.

外文关键词：

MorphologyCircularityRoundnessAspect ratioBall millBreakage mechanism

作者：

Moosakazemi, Farhad、Mohammadi, M. R. Tavakoli、Mohseni, M.、Zakeri, M.、Karamoozian, M.

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作者单位：

Univ Tehran, Sch Min Engn, Coll Engn, Tehran, Iran

Acad Ctr Educ Culture & Res ACCER TMU, Mineral Proc Res Ctr, Beneficiat & Hydromet Res Grp, Tehran, Iran

Tarbiat Modares Univ, Dept Min Engn, Tehran, Iran

Acad Ctr Educ Culture & Res ACCER TMU, Mineral Proc Res Ctr, Res Grp Control & Modeling Mineral Proc Syst, Tehran, Iran

Shahrood Univ Technol, Sch Min Petr & Geophys, Shahrood, Iran

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出版年：

2017

DOI：

10.1016/j.minpro.2017.06.001

International Journal of Mineral Processing

SCI

ISSN：0301-7516

年,卷(期)：2017.165

被引量21
参考文献量25