Six blade Rushton turbine                                                 Smith impeller - Unimix Equipments Pvt Ltd

  Six blade Rushton turbine impeller                                                                        Smith impeller


  • The Rushton turbine is a disk type (six blade turbine) radial flow impeller.
  • The diameter of the disk ranges from 66 to 75 percent of the internal vessel diameter.
  • Impeller design is best suited for gas liquid contacting because of the circular disk.
  • Gas is introduced through a sparger below the impeller; the disk directs the gas along a path of maximum liquid contact and prevents the gas from taking the direct vertical route along the mixer shaft
  • Variant of the Rushton turbine is the Smith impeller in which the impeller blades are semi – circular or parabolic, instead of flat.
  • For gas dispersion, the impeller shape allows for much higher power levels to be obtained in the process as compared to the Rushton turbine.

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