Mathematical Modelling for a Description of Classifying Processes for Granular Materials in a Fluidised Bed Classifier

摘要

Classifying by means of fluidised bed requires the correct selection of technical equipment and process parameters, which for their part must correlate very well with material parameters. in this paper, a method for determination of these parameters is presented which is based on both a numeric approach as well as on experimental results. The mathematical model can not only be used for establishing the operating parameters of a classifier and their optimisation, but also for an analysis of process procedures on existing classifiers. Th this cast, the model can serve for the determination of optimum process parameters: gas velocity, feed velocity and angles of inclination for achieving a specified material quality during classifying. The compiled algorithm can be used in processing systems for automatic control of installed classifiers. A further application area of the method is their use for analysing the principle of operation of not only a classifier, but a whole system of classifiers with different parameters.