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Open AccessArticle

Development of a More Descriptive Particle Breakage Probability Model

1
School of Chemical and Metallurgical Engineering, University of the Witwatersrand, Johannesburg 2050, South Africa
2
Institute of the Development of Energy for African Sustainability (IDEAS), a Research Centre of the University of South Africa (UNISA), Florida Campus, Private Bag X6, Johannesburg 1710, South Africa
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(8), 710; https://doi.org/10.3390/min10080710
Received: 8 June 2020 / Revised: 5 August 2020 / Accepted: 6 August 2020 / Published: 12 August 2020
(This article belongs to the Special Issue Comminution in the Minerals Industry)
Single-particle breakage test is becoming increasingly popular, as researchers seek to understand fracture response that is purely a function of the material being tested, instead of that which is based on the performance of the comminution device being used. To that end, an empirical breakage probability model that builds on previous work was proposed. The experimental results demonstrate the significance of both energy input and the number of repeated breakage attempts. Four different materials were compared, to gain a better insight into the breakage response. This modelling work goes further from previous research of the authors, by showing that not only does size related threshold energy and repeated impacts characterize particle breakage properties, but each material exhibits unique trends in terms of how its threshold energy and its rate of deterioration varies with particle size and each impact, respectively. This behaviour can be attributed to the different mechanical characteristics of the material and their flaw distribution. The importance of these aspects was highlighted. View Full-Text
Keywords: single particle breakage; energy input; drop-weight tester; breakage modelling; grinding prediction single particle breakage; energy input; drop-weight tester; breakage modelling; grinding prediction
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MDPI and ACS Style

Bwalya, M.M.; Chimwani, N. Development of a More Descriptive Particle Breakage Probability Model. Minerals 2020, 10, 710. https://doi.org/10.3390/min10080710

AMA Style

Bwalya MM, Chimwani N. Development of a More Descriptive Particle Breakage Probability Model. Minerals. 2020; 10(8):710. https://doi.org/10.3390/min10080710

Chicago/Turabian Style

Bwalya, Murray M.; Chimwani, Ngonidzashe. 2020. "Development of a More Descriptive Particle Breakage Probability Model" Minerals 10, no. 8: 710. https://doi.org/10.3390/min10080710

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