Secrets of the Bond Ball Mill Grindability Test

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dc.citation.epage7
dc.citation.rankM33
dc.citation.spage1
dc.contributor.authorDoll, Alex
dc.contributor.authorNikolić, Vladimir
dc.date.accessioned2024-12-24T11:31:31Z
dc.date.available2024-12-24T11:31:31Z
dc.date.issued2024
dc.description.abstractThe Bond ball mill grindability test is one of the most common metrics used in the mining industry for ore hardness measurements. The test is an important part of the Bond work index methodology for designing and measuring the efficiency of mineral grinding circuits. In spite of being called “Bond’s Law,” the work index equations are not a law of nature; but rather an empirically measured regression of a large data set collected by the Allis- Chalmers corporation in the period between 1930 and 1952. As a regression, it is valid within a specific “calibration space,” and great care is required when deviating the test procedures or observing results that are outside of that calibration space. This paper is a collected summary of other works by the Authors that describe feed sizes, product sizes, quality control checks, and other information about interpreting the test and using its results. Examples of adjustments that are sometimes required when using the test are: changing the test product (P80), and coping with a feed that is too fine to apply the “proper” feed preparation steps (such as is sometimes observed from HPGR or SAGDesign product testing). Related metrics, like the Morrell Mib value and Levin B value will be discussed, along with recommendations for their use on design projects.
dc.identifier.urihttps://repozitorijum.tfbor.bg.ac.rs/handle/123456789/5929
dc.language.isoen
dc.publisherSociety for Mining, Metallurgy & Exploration Inc.
dc.rights.licenseARR
dc.rights.uriAll rights reserved
dc.sourceMINEXCHANGE 2024 SME Annual Conference & Expo, February 25-28, 2024, Phoenix, AZ
dc.titleSecrets of the Bond Ball Mill Grindability Test
dc.typeconferenceObject
dc.type.versionpublishedVersion

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