The process of particle attrition in an apparatus with a fluidized bed of material has been investigated. A mathematical model of the process of particle attrition was proposed, which makes it possible to determine the density of the distribution function of particles by weight, as well as the degree of attrition depending on the average residence time in the bed. An experimental study of the particle attrition was carried out on the example of granules of ammonium sulfate in an apparatus with a spouted bed and the adequacy of the proposed model to the actual process was confirmed.
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