Refinement of the Bond work index calculation method for finer samples
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Date
2025
Authors
Nikolić, Vladimir
Trumić, Milan
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade - Technical Faculty in Bor
Source
Proceedings [Elektronski izvor] - 56th International October Conference on Mining and Metallurgy - IOC 2025, 22-25 October, 2025, Bor Lake, Serbia
Volume
Issue
Abstract
The Bond work index (BWI) is a widely recognized method used for selecting comminution equipment, evaluating grinding efficiency, and calculating the required grinding power. Although it is considered an industry standard, Bond did not fully define all steps in his original procedure, which can lead to significant variability in test results. One such undefined aspect is the initial particle size of the test materialspecifically, the commonly used 3.35 mm feed size. This raises the question of whether the BWI can be reliably determined using finer samples. In practice, materials with particle sizes smaller than 3.35 mm are often encountered. This study continues previous research by examining whether the proposed model for calculating the BWI on fine samples is applicable to medium-hard ores. The validation of the model on medium-hard samples resulted in an error of less than 1%, confirming its high accuracy.
Description
Keywords
Bond Work Index, Finer Samples, Grindability
Citation
DOI
10.5937/IOC25179N
Scopus
ISSN
ISBN
978-86-6305-164-5
License
CC-BY-NC-ND