A pre-selection high-efficiency pulping equipment suitable for wide particle size flotation

Abstract

A pre-selection high-efficiency pulping equipment suitable for wide particle size flotation, suitable for peat flotation. It includes a slurry tank with a columnar structure on the top and an inverted cone structure on the bottom. There is a slurry outlet on the top of the side wall, and a slurry extraction port on both sides of the bottom of the slurry outlet. There are slurry jets on both sides of the columnar structure. The inner side of the upper half of the mixing tank is alternately provided with annular shearing partitions and deflectors. The dual-channel jet circulation dosing system includes a dosing tube, which includes an inlet end, a diffusion end, and a throat. The dosing nozzle at the channel, the inlet end is connected with the slurry inlet and the slurry extraction port through a centrifugal pump and a three-way connection, a stirring shaft is arranged in the axial direction of the slurry mixing barrel, and multiple sets of stirring impellers are arranged on the stirring shaft, located at the most The two sets of stirring impellers at the bottom are at the same level as the two lowermost annular shearing baffles. It effectively improves the hydrophobic flocculation of coal slime and the removal of fine slime, improves the effect of pulp pretreatment, and effectively relieves the internal flow field pressure of the flotation machine.

Description

technical field [0001] The invention relates to a pre-selection high-efficiency slurry adjustment equipment, especially the pre-selection high-efficiency slurry adjustment equipment suitable for wide particle size flotation used in peat flotation. Background technique [0002] Flotation is the most economical and effective separation method for coal and mineral resources, and it has made outstanding contributions to the large-scale recovery of valuable resources in fine-grained low-grade coal and ores. The flotation process is carried out by using the surface and interface properties of the particles. The particles with good surface hydrophobicity are easy to attach to the air bubbles and float up as concentrates, while the hydrophilic gangue particles are left in the pulp and discharged as tailings. With the widespread application of mechanized mining and dense media beneficiation technology, problems such as large amount of floating coal slime, large content of intergrowth...

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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