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1、advancedflotationcontrolatfirstquantummineralsKevitsaminevariablefeedcharacteristicssuchasprojectsworldwide.Primaryproductionelementsincludecopper,nickel,gold,zincandplatinum.headgrade,orehardnessandfeedBackgroundtonnagepresentedchallengesforLocatedinnorthernFinland,130kminsidetheArcticCircle
2、,theopenpitKevitsaminecommencedcommercialprocesscontrol,stabilityandultimatelyproductioninAugustof2012,processingapproximatelyfiveandahalfmilliontonsoforeannuallytoproduceperformance.nickel,copperandPGMconcentrates.Toexpediteproduc-tionramp-upandoptimiseongoingflotationperfor-mance,anextensiv
3、eadvancedflotationcontrolsolutionFirstQuantumMinerals(FQM)isarapidlygrowingwasimplementedbyOutotecincollaborationwithFQMCanadianbasedminingandmetalscompany,co-locatedKevitsa.Tooptimiseoperatingefficiency,significantintheUnitedKingdom,SouthAfricaandAustralia.FQMautomationwasbuiltintothedesign,
4、incorporatingmostcurrentlyoperatessevenminesandisdevelopingfiveofOutotec’sadvancedprocesscontrol(APC)solutions.cHallenGessolutionBenefits•Highlyvariablefeed-grade,•Outotecadvancedprocess•1.3%Curecoveryimprove-orehardness,orecontentcontrol(APC)solutions-mentwithhighergradewhen•Largescalefloatp
5、lantcustomisedtositeneedsAPCwasutilisedduring(including14x300m3cells)testwork•IncreasedprocessstabilityImplementationoftheAPCsolutionswasundertakenOutotecTankcell300m3(roughersection)downtotheinphaseswiththeflotationgradecontrolsystembeingOutotecTankcell20m3(finalcleanersection),largevari-add
6、edinNovemberof2013.Variablecharacteristicsinationsinfeedtonnageandheadgradecanhaveaseverefeedgrades,orehardnessandfloatablenonsulphideeffectontheprocessasawhole.gangue(NSG)contentpresentedchallengesforprocesscontrol,stabilityandultimatelyperformancewithrespectSuchalargescaleandvariableflotati
7、onplantrequirestometalrecoveriesandconcentrategrades.Theseastrongdegreeofprocesscontrol.APCsystemsofferafluctuationscreateanimperativetomaintaincontrolandsolutionthatcanundertakemultipletaskssimultaneouslystabilityoftheflotationcircuitunderan