Online mineral measurement applications using magnetic resonance

D. W. Bennett, B. K. Schwitter, D. G. Miljak, J. Khachan

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution


The performance of prototype magnetic resonance sensors suited to mineral measurement in conveyor, slurry or portable applications is described. The sensors can be positioned around conveyors and modified slurry pipes, providing deep penetration of the sensing field, relative insensitivity to ore surface conditions and high mineral discrimination. Measurements on slurry, concentrates and ores sourced from mine operations are presented for two applications. Firstly, the quantitative measurement of chalcopyrite in slurry was demonstrated in laboratory measurements. In a calibration test, a standard error of 0.1 wt per cent and detection limit of 0.3 wt per cent was obtained. Secondly, results were obtained for the discrimination of iron ore texture. Signals were readily observed using measurement integration times of seconds to several minutes, depending on ore material. The results demonstrate the feasibility of online quantitative analysis of selected minerals in processing applications using magnetic resonance.

Original languageEnglish
Title of host publication9th International Congress for Applied Mineralogy, ICAM 2008 - Proceedings
Place of PublicationCarlton, Vic
PublisherAustralasian Institute of Mining and Metallurgy
Number of pages4
ISBN (Print)9781920806873
Publication statusPublished - 2008
Externally publishedYes
Event9th International Congress for Applied Mineralogy, ICAM 2008 - Brisbane, QLD, Australia
Duration: 8 Sep 200810 Sep 2008


Other9th International Congress for Applied Mineralogy, ICAM 2008
CityBrisbane, QLD

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