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Journal of Applied Sciences
  Year: 2007 | Volume: 7 | Issue: 15 | Page No.: 2200-2205
DOI: 10.3923/jas.2007.2200.2205
 
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Experimental Study on the Mixing of Binary Polymer Particles in Different Types of Mixer
Almahdi Atteya Alhwaige, Siti Masrinda Tasirin and Wan Ramli Wan Daud

Abstract:
In this study an experimental study of mixing process of free flowing polymers binary mixtures at different densities and colours in three mixers was investigated. The state of mixing of solids was studied by analysing the variation of the proportions of the marked particles with time and position in the bed or in the mixer. The variation of mixture composition based on the samples was incorporated into Lacey mixing index which describes the degree of mixing of the particles at particular time. This method enables assessment of the overall mixing behaviour in terms of the rate of mixing (through estimation of the time required for the mixing index to increase from zero to a certain value), together with the degree of mixing at the mixing equilibrium. Results showed that gas velocity and bed depth are important parameters influencing solids mixing in a bubbling fluidised bed. Whilst it was observed that the rotation speeds and filled up levels are important parameters influencing solids mixing in V-mixer and Nauta-mixer. From the results, complete mixing was attained at a bed depth of 17 cm and gas velocity of 1.38Umf in the fluidised bed; 40% filled up level and 40 rpm in the V-mixer and 50% filled up level and 5 rpm in the Nauta-mixer. From the energy consumption analysis made, it was found that a fluidised bed mixer offers the most efficient and economical process compared to the V-mixer and Nauta-mixer.
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How to cite this article:

Almahdi Atteya Alhwaige, Siti Masrinda Tasirin and Wan Ramli Wan Daud , 2007. Experimental Study on the Mixing of Binary Polymer Particles in Different Types of Mixer. Journal of Applied Sciences, 7: 2200-2205.

DOI: 10.3923/jas.2007.2200.2205

URL: https://scialert.net/abstract/?doi=jas.2007.2200.2205

 
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