A high-efficiency pulping method before selection suitable for wide particle size flotation

Abstract

A pre-selection high-efficiency slurry adjustment method suitable for wide particle size flotation, suitable for use in peat re-selection. First, the wide-grained pulp is fed through the pulp inlets on both sides of the mixing tank to form a high-speed jet, and the high-speed jet enters from the inlet end of the dosing pipe of the Venturi tube structure to form a negative pressure zone. The pulp, collector and foaming agent The slurry is emulsified in the negative pressure area of ​​the Venturi standpipe structure by self-suction, and cavitation occurs in the slurry. The tangential jets of the slurry jet ports on both sides of the slurry inversion platform structure are fed into the bottom of the mixing tank to form a strong upward swirling flow, which is controlled. The rotation direction of the rotating impeller on the stirring shaft in the mixing tank is always opposite to the direction of the strong swirling flow to ensure the counterflow of the pulp; the upward strong swirling pulp forms a countercurrent mixing with the rotating impeller in the forced stirring area, and uses the annular shear baffle And the guide plate reduces the stress distribution, improves the stability of the equipment, and at the same time plays an auxiliary shearing effect on the strong swirling slurry moving upwards, and improves the slurry mixing effect; the steps are simple and the slurry mixing effect is good.

Description

Technical field [0001] The present invention relates to a preferred high-efficiency slurry method, in particular, a pre-selected high-efficiency slurry method suitable for a wide-grain-level flotation in a suitably used. Background technique [0002] Flotation is aimed at the most economically effective sorting methods of coal and mineral resources, and has a prominent contribution to the scale recycling of privileged ore and ore. The flotation process is carried out by the surface interface properties of the particles, and the surface hydrophobic particles are easy to attach to bubbles as concentrates, and the hydrophilic pulse particles remain in the slurry as tailings. With the general application of mechanized mining and resend-quality mineralization process, there is a lot of floating coal mud, large lamination content, narrowed range of effective sortment, etc. Therefore, improve the flotation equipment, refine sorting process, widened flotation range, improve sorting effic...

AI Technical Summary

Problems solved by technology

The traditional mineral flotation slurry mixing equipment is limited by the internal stirring structure, the mixing property of the slurry is weak, the fine particles have a low probability of collision and adhesion with the chemical molecules with strong water, and the adaptability to the feeding conditions of wide-grained coal slime is poor, and it is difficult to effectively remove coarse particles fine mud

The result of low-level pulping increases the burden of subsequent flotation operations, which makes the mechanical agitation intensity in the flotation machine passively increased, worsens the flow field environment during the flotation process, and increases the desorption probability between particle bubbles, which is not conducive to particle flotation recovery

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