Mill Vertical roller mill

1.Product characteristic mill Simple process (Grinding, Drying and Classification) at the meantime Less Area Occupation, Compact layout, Less Equipment Weight and Low Investment High Grinding Efficiency and Low Power Consumption Great Energy Saving due to air-swept grinding with exhaust gas utilization by Exhaust Gas Utilization Low noise due to Material grinding bed combination and good operating condition due to grinding operated under negative pressure Grinding Table Working and Negative Pressure Operation; Low Noises and Pollution 2.Structural features Automatically roller lifting and falling, which helps to realize no-load start. Auxiliary drive for startup and maintenance are not equipped for the medium size mills and downwards. Welded type arc plate is used for sealing. It features simple structure, reliable operation and good sealing effect. The centralized circulating oil lubrication is applied for the roller bearings, which ensures the roller bearings run at favorable temperature and with clean oil so that longer service life is achieved. Some distance between grinding roller and grinding table is maintained with the limit switch and the friction and collision between metal parts. Compages separator is used to improve separating efficiency. Special air adjustment plates are arranged to have appropriate gas velocity to meet the material particle size distribution. Hydraulic roller swing-out device helps to ease maintenance. The lower operation pressure of hydraulic system helps to reduce oil leakage and to improve operation and maintenance. The hydraulic system is equipped with pressure buffer device, which can reduce mill vibration effectively. 3.Specifications (1)Technical specification of raw mill Style(m) Φ3.6×7.5+1.5Φ4.6×7.5+3.5Φ4.6×10+1.5Φ5×10.5Φ5×10+2.5Mode of GrindingClosed CircuitClosed CircuitClosed CircuitAir FlowClosed CircuitMode of DriveGirthgear & PinionCentral/Girthgear & PinionCentral/Girthgear & PinionCentral/Girthgear & PinionCentral/Girthgear & PinionNos of ChamberDouble ChamberDouble ChamberDouble ChamberSingle ChamberDouble ChamberRotation Speed(r/min)16.7151514.4214.42Capacity(t/h)90150190230250Feeding Size(mm)<25<30<30<30<30Output Fineness % residue on 80 μm1212121212Ratio of Main Redueer6.3///Ratio of Main Motor(kW)1400250035503550400Filling Quantity of Grinding Media(t)88127190200220(2)Technical specification of cement mill Style(m) Φ3.8×13Φ4×13Φ4.2×13Φ4.4×15Φ4.6×14Φ5×15Mode of GrindingClosed Circuit/Open CircuitClosed Circuit/Open CircuitClosed Circuit/Closed Circuit/Closed Circuit/Closed Circuit/Mode of DriveCentral/Girthgear & PinionCentral/Girthgear & PinionCentral/Girthgear & PinionCentral/Girthgear & PinionCentral/Girthgear & PinionCentral/Girthgear & PinionNos of ChamberDouble ChamberDouble ChamberDouble ChamberDouble ChamberDouble ChamberDouble ChamberRotation Speed(r/min)16.315.9515.615.31514.4Capacity(t/h)657575100125150Specific Surface Area(cm2/g)3200-3600360036003200-340034003400-6300Ratio of Main Motor(KW)250028003150380045005800