Rake-free separation tailing thickening sand bin

Abstract

The invention relates to a rake-free separation tailing thickening sand bin, and aims to solve the problems that tailing concentration equipment in the prior art is complex in structure, low in sand discharging concentration and unsmooth in discharging. The rake-free separation tailing thickening sand bin comprises a sand bin body, a flocculation feeding tube, a center feeding barrel with a middleseparation plate, a tailing feeding tube, an overflow groove, an annular sedimentation cone, a sliding frame fluidization device and a double-screw discharging device. Through design of the structure, flow field variation of a material flow in the sand bin is changed, and the flocculation agglomeration speed of fine particle tailings is accelerated; and meanwhile, a mechanical sliding frame fluidization sand-discharging technology is adopted, so that smooth sand discharging under a condition of highest underflow concentration is realized. The rake-free separation tailing thickening sand bin has the outstanding advantages of small size, simple structure, low manufacturing cost, high concentration efficiency, high underflow concentration and the like.

Description

technical field [0001] The invention relates to the field of mine environmental protection equipment, in particular to a dense sand bin for tailings without raking. Background technique [0002] When the mining industry concentrates and dehydrates the low-concentration tailings produced in the mineral processing production process, it generally uses a deep cone thickener with a rake frame or a vertical sand bin. At the bottom of the thickener or vertical sand bin, when the concentration of tailings reaches a certain value, the rheological characteristics of the slurry are non-Newtonian fluid characteristics, and its yield stress is relatively large, making it difficult to achieve smooth discharge. [0003] Thickeners in the prior art generally use complex-structure scraper rakes to destroy the yield stress to achieve high-concentration ore discharge. The scraper rake unloading method has problems such as complex structure, high power consumption, high manufacturing cost, and...

AI Technical Summary

Problems solved by technology

At the bottom of the thickener or vertical sand bin, when the tailings concentration reaches a certain value, the rheological characteristics of the slurry are non-Newtonian fluid characteristics, and its yield stress is relatively large, making it difficult to achieve smooth discharge

[0003] Thickeners in the prior art generally use a mud scraper with a complex structure to destroy the yield stress to achieve high-concentration ore drawing. The scraper rake unloading method has problems such as complex structure, high power consumption, high manufacturing cost, and complicated maintenance. ; For tailings with high compaction degree, there is still a hidden danger of raking

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