A mathematical model is developed to describe attrition, which is the main source of nuclei in suspension crystallization. The model allows one to calculate the mass median size of the crystals obtained and the particle size distribution function. The effect of the suspension volumetric flow rate, the geometric sizes of a impingement device, and the initial size of a seed on the size of the crystals obtained is revealed. The model is applicable to describing the contact mechanism of nucleation in impact of crystals with a stirrer, pump blades, etc. To study attrition on a laboratory scale, a set of experiments was carried out with the ammonium sulfate crystal system under various conditions.
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Dorofeeva et al. (2006) studied this question.
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