Turbomixer

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Turbo mixer owned by the Museum Europäischer Kulturen
parts of the Turbo mixer

A Turbo mixer, also known as a high speed mixer or a tank mixer, is a type of industrial mixer that uses PVC for mixing raw materials to form a free-flowing powder blend.

Design[edit]

It includes a cylindrical tank with a mixing tool assembled on the bottom that typically operates at a peripheral speed of between 20 and 50 m/s, depending on the material to blend. The material is heated inside by a mixer, through the mechanical energy that is produced between the mixing tools and the material which generates mutual impacts of the particles.[1][2] During the mixing phase, the Turbo-mixer creates an axial vortex. The structure and position of the blades inside the mixer guarantee homogeneous material dispersion.

To avoid thermal degradation, it is usually combined with a cooler that cools down the dry blend to the temperature of around 45-55 C. Due to the poor heat conductivity of the cooler, the cooler is usually three times larger than the mixer as the cooling time is proportional to contact surface.

Applications[edit]

The typical uses of the Turbo mixer is for the production of PVC (dry-blend rigid or plasticized) and for other kinds of thermoplastic composites (like Master-Batch, Wood Plastic Composites, Additives, Thermoplastics Polymers). The largest high-speed mixer known on the market has a tank volume of 2500 litres, which corresponds to a PVC batch size of about 1060 l and is combined with a horizontal cooler 8600 l. It was manufactured by the Italian company PROMISING S.r.L. in 2014.[3][4]

References[edit]

  1. ^ Leadbitter, J.; Day, J. A.; Ryan, J. L. (1 January 1994). PVC: Compounds, Processing and Applications. iSmithers Rapra Publishing. ISBN 978-1-85957-029-6.
  2. ^ W. V. Titow M. Phil., Ph.D., C. Chem., F.R.S.C., F.P.R.I., C. Text., A.T.I.
  3. ^ PVC Degradation and Stabilization 9 Jun 2009 by George Wypych
  4. ^ Developments in PVC technology Front Cover National College of Rubber Technology Wiley, 1973 - Science - 161 pages