Abstract
As for the pulp-mixing process of small mineral, its flow field configuration principle is to obtain effective cycle in the same operating condition, and allocate strong shearing action according to the needs. This paper takes the coupling of secondary circulating flow pattern as the basis of flow field design to construct the double-impeller function system with the common effects of axial flow impeller and radial flow impeller, thus forming the high-efficient functional mechanism merging strong cycle and strong shearing together. It shows in the result that the effect of double-impeller configuration is strengthened compared to the conventional single-impeller pulp-mixing process: the decrease range of mixing time can reach about 50%; shearing mechanism has effectively blended in the related flow field, and achieved improvement on this basis. It means that the double-impeller configuration has respectively made up the shortage of the cycle performance in the single-impeller radial flow field and the shearing performance in the single-impeller axial flow field, initially formed the mixing mechanism characterized by high-efficient strong cycle mixing and high shearing mixing, and provided practical foundation to develop new and high-efficient modified pulp-mixing equipment.
Published Version
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