Competence in cement - Gebr. Pfeiffer SE

PFEIFFER MPS mill –the proven system forcomminutionThe solution to your problemIn the cement industry, MPS roller millsare used for grinding cement raw ma -terial, coal, cement clinker, granulatedblast-furnace slag, and pozzolana. Suchbulk materials differ considerably interms of grindability and abrasiveness.The capacities of cement productionlines vary within wide limits to suit individualrequirements. Due to its design,the MPS roller mill is specially suitedfor small and medium throughput rates.The working principleThree stationary grinding rollers rollon a rotating grinding track. Drawn inbetween the rollers and track, the feedmaterial is ground by pressure andshear. The compression forces requiredfor comminution are produced by ahydropneumatic tension system.The finished product leaves the classi -fier with the gas flow for separationin the downstream cyclones or filter.The advantagesLow capital costMPS mills require few ancillaries, noor little building volume, their oper -ation is dust free and they have alow noise level.Optimum utilization of process heatMPS roller mills allow an optimumutilization of the thermal energy ofprocess gases.Maximum availabilityThanks to low specific wear rates, highquality wear materials, and modernrepair methods, the maintenancedowntime of MPS roller mills isreduced to a minimum.Favorable control behaviorHigh drying capacity, short retentiontime, and remote control of grindingpressure and rotor speed allow a fullyautomatic operation of the MPS rollermill even with varying raw materialqualities.The ground material is conveyed bycentrifugal forces towards the stationarynozzle ring. Gases (air or hot gas)flowing up through the nozzle ringcarry the ground and dried materialto the classifier where it is separatedinto grits and fines by the rotor. Thegrits fall back into the center of thegrinding area.Low electric power consumptionThe grinding principle and highefficiencyclassifier reduce electricpower consumption by up to 40 % ascompared with conventional ball mills.10 11