Evaluation of Attrition Characteristics of Granules by Vibrating Sieve Tester

Application for Attrition Estimation of Granules in a Rotary-Vessel-Type Mixer

Abstract

Attrition characteristics of granules were evaluated by using a vibrating sieve tester. The attrition fraction and the rate constant of attrition were measured under various vibrating conditions. An empirical equation of the attrition fraction was presented as functions of the granule strength and the energy consumption of vibration. In order to estimate the amount of attrition for relatively soft granulated materials during mixing operation, we performed mixing tests with an actual rotary-vessel-type mixer and measured the relationship between the attrition fraction and the mixing time. Based on the energy consumption of the mixer, a correlation equation of attrition fraction for the mixer was obtained by considering several experimental correction factors.