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      HOGG AND FUERSTENAU FORMULA CALCULATOR        
                    #
      Date           #
      Company/Plant       #
      Mill N°         #
                    #
      Mill diameter m         #
      Lining average thickness  mm         #
      Internal diameter m         #
      Useful length m No       #
      Length/Diameter ratio   Yes       #
      Speed rpm         #
      Critical speed rpm         #
      % of the critical speed %         #
      Volume load (Filling degree) %         #
      Find the angle θ to get 99,99% correlation °                 -----------------------> It is an iteration! #
     
     
                #
      Correlation %          
      Balls density t/m3           
      Tonnage of balls t           
      Specific gravity of the material t/m3          
      Percentage of solids in the mill %          
      Bulk density of material t/m3          
      Pulp or material level
             
      How many millimeters? mm (above or below)          
      Tonnage of material between balls t           
      Volume of charge m3          
      Apparent density of the charge t/m3          
      Lift angle (*) °          
      (*) Lift angle is generally between 30° and 35° for a ball mill          
     
     
     
      Absorbed power at mill shell kW          
      Transmission efficiency
    %          
      Motor efficiency
    %          
      Absorbed power at terminals kW          
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    All rights reserved © 2012-2015 The Mining Grinding Office