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    Ball mill (drying chamber + 1 grinding chamber)  
    Calculator valid for raw meal, cement or other materials      
             
    Date      
    Cement plant
    Mill number    
    Diameter m    
    Speed of rotation rpm     -----> % of critical speed
             
    Drying chamber         
    Diameter (*) m     
    Usefull length (**) m    
    Power of drying chamber kW    
    (*) Drying chamber diameter is the same as mill diameter or smaller
    (**) Usefull length of drying chamber with transfer diaphragm included
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    Grinding compartment        
    Usefull length m     
    Filling degree %    or tons of balls
    Biggest ball diameter mm    
             
    Power coefficients        
    Annular (Ring) motor
          
    Slag in the fresh feed 
         
    Fresh feed is iron ore
          
    Fresh feed is coal
        No
    Lifting-classifying lining
        Less than 50%
    Retaining rings
        More than 50%
    Thin lining
    (< 60 mm)    
    Cylpebs
         
    Power of grinding compartment kW    
             
    Absorbed power of the mill kW
             
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    All rights reserved © 2012-2015 The Cement Grinding Office