Template:Model theory (Text, Slurry Flow, Morrell and Stephenson)

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where

  • and are the volumetric discharge rates of slurry through the grinding media zone and slurry pool, respectively (m3/h)
  • and are the slurry discharge coefficients for the grinding media zone and slurry pool, respectively
  • is the net fractional slurry hold-up in the grinding media interstices (v/v)
  • is the net fractional slurry hold-up in the slurry pool (v/v)
  • is the open area weighted mean radial position of the grate apertures (m/m)
  • is the total open area of grate apertures (m2)
  • is the mill diameter (m)
  • is the fraction critical speed of the mill (frac)
  • is the net fraction of mill volume occupied by slurry (v/v)
  • is the maximum net fractional slurry hold-up in the grinding media zone (v/v)
  • is the fraction of mill volume occupied by grinding media, including associated interstices (v/v)
  • is the dead fraction of mill volume which is occupied by slurry before discharge commences (v/v)
  • is the relative radial position of the outermost grate apertures (m/m)