image of a vibration mill

Vibration Mill

In Particle Size Reduction Equipment by Calistus Ozioko1 Comment





A vibration mill is a size reduction equipment that applies the process of continuous impaction in carrying out its size reduction function. The grinding container is made up of a tube that is held in a frame that is supported by means of springs which is filled to approximately 80% total volume with porcelain or stainless steel balls.

During milling, the entire body of the mill undergoes a small but frequent vibration that is generated by eccentric motor. The milled particles fall through a screen at the base of the mill.



scematic-representation of vibration mill

Advantages of Vibration Mill


  • Suitable for hard abrasive grinding stocks
  • Unlike tumbling mills, the porcelain in the vibrating mills move only a few millimeters through a complex path, shearing and impacting the materials between them.
  • Higher grinding rate in the range of fine particles.

Disadvantages of Vibration Mill

  • Not suitable for thermolabile material

See also: Roller Mill

REFERENCES

  • Brook R.J. (1991). Concise Encyclopedia of Advanced Ceramic Materials. Pergamon Press Plc, UK.
    Hiroaki Masuda, Ko Higashitani, and Hideto Yoshida (2007). Powder Technology: Handling and Operations, Process Instrumentation, and Working hazards. CRC Press, Taylor and Francis Group, LLC.
  • Michael E. Aulton, and Kevin Taylor (2013). Aulton’s Pharmaceutics: The Design and Manufacture of Medicines fourth edition. Elsevier Ltd, NY.

Comments

  1. Wow, I had no idea that there were so many advantages to using vibration mills for milling. Although, I suppose it makes sense since there is a higher grinding rate for particles. That is definitely something to keep in mind if I ever need to do any milling for the projects that I’ve been working on lately.

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