Template:SysCAD (Page, Stirred Mill, Perfect Mixing, Mill)

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Mill page

The Mill page is used to specify the input parameters for the mill model.

Tag (Long/Short) Input / Display Description/Calculated Variables/Options
PerfectMixing
HelpLink ButtonModelHelp.png Opens a link to this page using the system default web browser. Note: Internet access is required.
Requirements
NumParallelUnits Input The number of parallel, identical units to simulate:
  • Feed is divided by the number of parallel units before being sent to the unit model.
  • Unit model product is multiplied back by the same value and returned to the SysCAD product stream.
  • All unit model result values are shown per parallel unit.
MediaStringsP50 CheckBox
  • Only visible if the MediaStrings option is checked.
  • Replaces the MediaSize.Sim user defined value with the MediaSize (All) P50 value from the MediaStrings page.
  • The value of MediaSize.Orig should be determined on the same basis for correct scaling of a changed media charge.
Stirred
UserExponents Checkbox Indicates whether to use user-defined values for the scaling exponents.
MillDiameter Input The inside liner diameter of the simulated mill.
MillHeight Input The height of the simulated mill.
MediaHeight Input Height of the media charge of the original and simulated mills.
MediaDiameter Input Median diameter of the media in the original and simulated mills.
StirrerDiameter Input Diameter of the stirrers of the original and simulated mills.
StirrerSpeed Input Rotational speed of the stirrers of the original and simulated mills.
StirrerStarts Input Number of starts of the (screw) stirrers of the original and simulated mills.
StirrerTurns Input Number of turns per start of the (screw) stirrers of the original and simulated mills.
WorkIndex Input Bond Ball Work Index of ore in the original mill.
Exponent Input
  • Only visible if UserExponents is selected
  • Allows user to specify values of the scaling exponent for each original/simulated parameter pair.
R/DFunction
NumSplineKnots Input Number of spline knots for the function.
Size Input Spline knot size positions.
Ln(R/D*) Input Values of at each spline knot position.
Results
MillVolume Display Volume inside the mill.
MediaVolume Display Volume occupied by the media in the mill, excluding void space.
SlurryVolume Display Volume of slurry in the mill, including slurry in media void space and above media charge.
LoadFraction Display Volume of media charge, including void space and excluding stirrer volume, as a fraction of mill volume, excluding stirrer volume.
ResidenceTime Display Mean residence time of slurry in the mill.