comminution pilot plant - mintek · comminution pilot plant ... • concrete drying pad for ore...

Comminution Pilot PlantMINTEK offers both bench- and pilot-scale testing facilities. The results from these tests are used for simulations, scale-up studies and techno-economic evaluations.Equipment and scale of operation•Concretedryingpadfororedryingandsizing,capacity

up to 2 000 t of material at one time;•Largesamplesofupto2000tcanbetreatedinpilot

campaigns;•Trommelscreenforcontinuousclassificationoforefrom

150 mm to 50 mm;•Crushingandblendingfacility,consistingofa20by10inchjawcrusherfollowedbya2-footstandardheadSymonsconecrusherinclosedcircuitwithavibratingscreen;

•Kilowatt-hourmetersareusedtomeasurethepowerconsumption of the jaw and cone crushers. Access points are available to take belt cuts of all the streams in the circuit; and,

•PilotKöppernHPGRandlaboratoryPolysiusHPGR.

AG/SAG pilot mill •Internaldimensions:1.7mdiameterby0.6mlength;•Typicalthroughput:0.5to1.5t/h,dependingontypeof

ore; and,•Accurateinstrumentationforfeedrate,chargemass

and mill power.Pebble, ball, and rod mills •Internaldimensions:0.86mdiameterby1.5mlength

(smaller mills available);•Typicalthroughputs:0.3to1.0t/hdependingonfeed

material;•Accurateinstrumentationforfeedrateandmillpower;•Variousclassifiersareusedwiththesemills,includinghydrocyclones,screens,andspiralclassifiers;and,

•PebblecrushersarefrequentlyusedincertainAGcircuitoptions.

Major projects completed in the past few years

EvaluationofAG,SAG,ballorpebblemillingcircuitsforbasemetalores:

•NkomatinickelprojectforAvmin,SouthAfrica;and,

•AguaRicacopperoreprojectforBHPCopper,Chile.

Pilot-scaletestworkdonetoevaluateAG,SAG,ballorrodmillingcircuitsonSouthAfricanPGMores:

•ImpalaPlatinumUG2andMerenskyores;

•TwoRivers(Avmin);

•EverestSouthUG2(AquariusPlatinum);

•Ngezi(ZimbabwePlatinumMines);and,

•WinnaarshoekUG2(ImpalaPlatinum).

TargetgoldprojectforAvgold,SA-evaluationofAG,SAG,ball and pebble milling circuits.

Metallurgical audits of comminution circuits (Impala PlatinumandLonminPlatinum).Samplingcampaigns,massbalancereconciliation,laboratoryandpilot-scaletestwork,steady-statecomputersimulationstoevaluatepossiblecircuitmodificationstoincreasethroughputandmaintainorimprovefinenessofgrind.

SpecialistsAdrianHindeJohnnyKalala

For further information contactManager:MineralsProcessingDivisionTel:+2711709-4736Fax:+2711709-4427MPDmanager@mintek.co.za

Mintek200MalibongweDrive,Randburg,SouthAfricaPrivateBagX3015,Randburg2125,SouthAfricaTel:+27117094111www.mintek.co.za