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    Birotator mill              
    TECHNICAL DATA              
    Email
    Contact name
    Cement plant
     
    Mill number
    dry
    Supplier
    wet
    Plant process
     
    Mill diameter m
    lateral
    Mill length m   bi-lateral  
    Installed power kW closed central clockwise
    Speed of trotation rpm open annular anti-clockwise
    Type of transmission
    Type of circuit
     
    Rotation
    yes
    Mill control
    no
    If yes, type of control
    Compartments Drying chamber
    Chamber 1
    Chamber 2
    Drying chamber diameter m
    Inlet trunnion diameter m
    m
    Usefull length
    m m m
    Type of lining
    Average thickness
    mm mm
    Type of diaphragm
    Diaphragm slots width mm mm mm
    Central screen diameter m m m
    Ball charge in metric tons
    Diameter 100mm
    t
    Diameter 90mm
    t
    Diameter 80mm
    t
    Diameter 70mm
    t
    Diameter 60mm
    t t
    Diameter 50mm
    t t
    Diameter 40mm
    t
    Diameter 30mm
    t
    Diameter 25mm
    t
    Total
    t t
    Filling degree
    % %
    Pregrinding (if exists)
     
    Type
    first
    Supplier
     
    second
    Model
    closed dynamic third
    Type of circuit
    open static fourth
    Installed power kW
    Separator
    Static separator diameter m
    Dynamic separator generation
       
    Supplier
    yes no  
    Model
    no bag bag
    Diameter m
    electrostatic electrostatic
    Ventilation m3/h at °C
    Filter (only for separator)
    Pressure avalaible mmH2O
    Mill ventilation
    Type
    From the kiln fan
    Additional hot gas generator (HGG)
    Hot gas temperature °C
    Capacity m3/h at °C
    Pressure avalaible mmH2O
    Kiln type
    PRODUCTION DATA              
    Mill absorbed power kW
    Pregrinding absorbed power kW
    Pressure at mill inlet mmH2O
    Pressure at mill outlet mmH2O
    Mill inlet temperature °C
    Mill outlet temperature °C
    Feed components Limestone Clay
    Temperature °C
    Moisture %H2O
    Hardness
    Granulometries (%residues cumulated)
    Sieves between brackets are example. You can change with similar sieves
    Limestone Clay
    (50mm)
    (25mm)
    (10mm)
    (5mm)
    (2,5mm)
    (1mm)
    (0,5mm)
    (0,25mm)
    (0,09mm)
    Composition
    % limestone
    % clay
    Residue 210µ %
    Residue 90µ %
    Production t/h
    Mill specific energy kWh/t
    Pregrinding specific energy kWh/t
    Circulation factor A/F
    VISIT OF THE MILL              
    Drying chamber
    Lifters condition
    Transfer diaphragm condition
    Maximum width of slots mm
    Slots blocked
    Central screen condition
    Other comments
    Chamber 1
     
         
    Measured volume load % good
    good no good
    Lining condition
    regular
    regular small regular
    Maximum ball diameter mm bad
    worn out hard bad
    Minimum ball diameter mm a lot of liners broken deformed very hard reverse
    Ball charge condition
    a lot of broken balls
    Material level under/over balls
    Coating on lining
    Coating on balls
       
     
    Uncrushed particles at the diaphragm
    no good
    good
    Diaphragm condition
    a bit regular
    regular
    Maximum width of slots mm
    a lot bad
    bad
    Slots blocked
    plates and grids broken
    Central screen condition
    Other comments
    Chamber 2
    Measured volume load %
    Lining condition
    Maximum ball diameter mm
    Minimum ball diameter mm
    Ball charge condition
    Material level under/over balls
    Balls classification
    Coating on lining
    Coating on balls
    Uncrushed particles at the diaphragm
    Diaphragm condition
    Maximum width of slots mm
    Slots blocked
    Central screen condition
    Other comments
    GRANULOMETRIES RESULTS              
    Samples taken inside the mill
    % residues cumulated
    Sieves between brackets are example. You can change with similar sieves
    Chamber 1 Sample 1 Inlet Sample 2 Sample 3 Sample 4 outlet
    Chamber 2 Sample 1 Inlet Sample 2 Sample 3 Sample 4 Sample 5 Outlet
    Samples taken in the circuit
    Samples depend of the kind of circuit, the example below is for a traditional circuit
    Laser analysis is the best one to evaluate the separator
    % residues cumulated
    Sieves between brackets are example. You can change with similar sieves
    Mill outlet Static sep. tails Separator feed Separator tails Separator fines Filter product Final product
                   
    Don't forget to send us the flowsheet of the installation to assistance@thecementgrindingoffice.com    
    Thank you in advance!              
                   
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    All rights reserved © 2012-2015 The Cement Grinding Office