REAL

Method for Particle Size Control During the Drying and Granulation in Fluidized Bed

Dencs, B. and Gyenis, János and Tardos, I. G. (2001) Method for Particle Size Control During the Drying and Granulation in Fluidized Bed. In: 7th Intternational Symposium on Agglomeration, 2001.05.29-2001.05.31., Franciaország.

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Abstract

The fluidized bed process presented in this paper is suitable for recovery of solids from solutions in the form of granules. The solution is sprayed into the bed and as solvent evaporates, solid material is deposited on the surface of fluidizing particles. During this process, particle growth takes place by surface layering and/or agglomeration. A special grinder is used in the fluidized bed to control particle growth by causing selective disintegration of large particles. For steady state operation, the most important task is to determine the existing particle size distribution in the fluidized bed. A special method was developed to measure torque and stress fluctuations* in the bed of particles. Using a correlation between torque and stress fluctuations and particle size, this method and device can be used for direct control of the rotation speed of the grinder to produce granules of given size in the fluidized bed. Results of torque and stress measurements and their correlation to particle size are presented.

Item Type: Conference or Workshop Item (Paper)
Subjects: T Technology / alkalmazott, műszaki tudományok > TP Chemical technology / vegyipar, vegyészeti technológia
Depositing User: Erika Bilicsi
Date Deposited: 12 Jul 2013 09:56
Last Modified: 12 Jul 2013 09:56
URI: http://real.mtak.hu/id/eprint/5923

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