Recent developments in microwave-assisted comminution

Simple item page
dc.contributor.authorKingman S.W.
dc.contributor.authorJackson K.
dc.contributor.authorCumbane A.
dc.contributor.authorBradshaw S.M.
dc.contributor.authorRowson N.A.
dc.contributor.authorGreenwood R.
dc.date.accessioned2011-05-15T16:01:50Z
dc.date.available2011-05-15T16:01:50Z
dc.date.issued2004
dc.description.abstractThe influence of high electric field strength microwave energy on copper carbonatite ore has been elucidated. It has been shown that very short exposures times can lead to significant reductions in ore strength as determined by point load tests. Comparative drop weight tests were carried out to determine any potential change in required comminution energy for microwave-treated material. It was shown that reductions in required comminution energy of over 30% could be achieved for microwave energy inputs of less than 1 kW h t-1. Comparative specific rate of breakage grinding studies showed that significant increases in grindability could also be achieved after short microwave exposure times, changes being related to particle size. QEM*SEM liberation studies showed that the amount of locked and middling copper sulphides was reduced from 69.2% to 31.8% in the +500 μm size fraction. Conclusions are made regarding the potential future development of this technology. © 2003 Elsevier B.V. All rights reserved.
dc.description.versionArticle
dc.identifier.citationInternational Journal of Mineral Processing
dc.identifier.citation74
dc.identifier.citation04-Jan
dc.identifier.issn3017516
dc.identifier.other10.1016/j.minpro.2003.09.006
dc.identifier.urihttp://hdl.handle.net/10019.1/12175
dc.subjectComminution
dc.subjectElectric field effects
dc.subjectFlotation
dc.subjectMicrowaves
dc.subjectScanning electron microscopy
dc.subjectSeparation
dc.subjectEnergy requirements
dc.subjectGrindability
dc.subjectImpact energy
dc.subjectMineral libration
dc.subjectMinerals
dc.titleRecent developments in microwave-assisted comminution
dc.typeArticle
Files
Collections
Stellenbosch University - Scopus Publications