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1、Int.J.Miner.Process.93(2009)59–65ContentslistsavailableatScienceDirectInt.J.Miner.Process.journalhomepage:www.elsevier.com/locate/ijminproGrindingofmineralmixturesinhigh-pressuregrindingrollsa,⁎,DouglasW.FuerstenaubAbdel-ZaherM.AbouzeidaDept.ofMining,FacultyofEngineering,CairoUn
2、iversity,Giza,EgyptbDept.ofMaterialsScienceandEngineering,UniversityofCalifornia,Berkeley,Ca,USAarticleinfoabstractArticlehistory:AttemptsatimprovingcomminutionmachinesgenerallyhavebeendirectedtowardsincreasingtheReceived15May2009performanceefficiency,particularlyincreasingthroug
3、hputrateanddecreasingenergyconsumption.TheAccepted23May2009latestandmostsuccessfulnewcomminutiontechnologyhasbeenthehigh-pressuregrindingrolls(HPGR),Availableonline17June2009whichhaveprovedtobehighlyefficientinenergyconsumptionandtohavearelativelyhighthroughputrateatlowsteelconsu
4、mption.Alreadyusedextensivelyincementplantsworldwide,thefirstHPGRsintheKeywords:mineralindustrywereinstalledinplantsprocessingdiamondores.TheyarenowfindingtheirwayintotheHighpressuregrindingrollsComminutionlarge-scalebase-metalminingindustry.Sincefeedconstituentsinnaturaloresvaryi
5、ntheirphysicalGrindingofmineralmixturespropertiessuchashardness,plasticityandbrittleness,thepresentpaperisconcernedwithaninvestigationEnergyefficiencyofgrindingofthebehaviorofaheterogeneousfeedasitpassesthroughtheHPGR.TheeffectoffeedcompositiononEnhancedenergyefficiencyincomminuti
6、onoperationalparameters,theenergyefficiencyofcomminution,andenergydistributionamongthefeedcomponentsisaddressed.Mineralparticleswithhighhardnessactasenergytransferagentsintherollgapandenhancethegrindingofsoftermineralparticlesinamixedfeed.©2009ElsevierB.V.Allrightsreserved.1.Intr
7、oductionotherisofhighpriorityinmodeling,optimizingandcontrollingthecomminutionoperation(VenkataramanandFuerstenau,1984).TheInmineralprocessing,comminutionaccountsforasubstantialcirculatingloadaswellasthemillhold-upincomplexoregrindingportionoftheenergyconsumedintheplant,almost80
8、%.Effortstocircuitsbecomesricherintheharderand/
