Diffusion Blending

Diffusion Blending

  • The three primary mechanisms of blending of solids are as under:

    • Diffusion blending
    • Convection blending
    • Shear blending
  • Diffusion blending is characterized by small scale random motion of solid particles.
  • Tumbler blenders such as the double cone blender, v-blender, octagonal blender, tumble-in blender, cubical blender function by diffusion mixing.
  • The tumbling action of the blender results in a random motion of particles. Solid particles move through a dilated bed of powder.
  • Diffusion blending occurs when the solid particles are distributed over a freshly developed interface.
  • Diffusion blending over a period of time provides high homogeneity when segregation is insignificant.

Related terms – Solid blending mechanisms, Convection blending, Shear blending

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