A multi-stage mixing and stirring device for flocculation flotation

Abstract

The invention discloses a multi-stage mixing and stirring device for flocculation and flotation, which includes a tank, a feeding mechanism, a flocculant adding mechanism, a stirring mechanism, and a concentric rotating shaft; the tank is a three-stage tank. The feeding mechanism is an annular distributed multi-point feeding mechanism, the flocculant adding mechanism is a multi-stage annular distributed flocculant adding mechanism, and the multi-stage flocculant adding mechanism is used to evenly add the flocculant at each level of the tank. The flocculant for the flocculation and flotation of fine-grained minerals. The stirring mechanism is a multi-stage concentric downwardly inclined blade type stirring impeller, which is used for step-by-step mixing of the flocculant and the slurry flow. The invention enhances the interaction between the flocculant and the suspension material, ensures full contact between the suspension and the flocculant, facilitates the mixing and diffusion of the flocculant and fine solid particles, and enhances the flocculation effect.

Description

technical field [0001] The invention relates to a multistage mixing and stirring device, in particular to a multistage mixing and stirring device for flocculation flotation. Background technique [0002] With the continuous expansion of the mining industry and the continuation of large-scale mining, resource depletion is serious, and the demand for fine-grained ore resources is increasing. Utilization has become one of the important tasks in current mineral processing research. [0003] At present, the flocculation and flotation separation technology, which gathers the fine particles in the pulp into flocs with suitable particle size through flocculation, and then recovers the flocs by flotation, has been applied in production practice. However, in production practice, most of the coagulation facilities used are hydraulic mixing methods with relatively simple design, and the existing mechanical mixing and stirring fine-grained mineral flocculation flotation process still ne...

AI Technical Summary

Problems solved by technology

However, in production practice, most of the coagulation facilities used are hydraulic mixing methods with relatively simple design, and the existing mechanical mixing and stirring fine-grained mineral flocculation flotation process still needs to be equipped with a separate large-volume mixing tank for mixing. Suspensions and flocculants cannot be mixed online and take up a lot of space

Therefore, it can be said that the existing mixing device has problems such as single addition point of flocculant, uneven distribution, weak cross fluidity between flocculant and suspension, etc., often due to insufficient contact between flocculant and suspension, resulting in poor mixing and diffusion effect and poor flocculation effect. Poor, poor flotation separation technical indicators, thereby reducing the comprehensive utilization of ore

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