Rapid thickener

Abstract

The invention discloses a rapid thickener which comprises a pool body and a feeding box hoisted in the center of the top of the pool body, and the pool body is divided into a separation transition material collecting area, a compression vibration concentration area and a sand discharging area from top to bottom. The diameter of the pool wall of the separation transition material collecting area, the diameter of the pool wall of the compression vibration concentration area and the diameter of the pool wall of the sand discharging area are sequentially reduced, a plurality of jet flow boosting nozzles are uniformly distributed at the bottom of the pool wall of the separation transition material collecting area in the circumferential direction, and a vibration assembly is arranged in the compression vibration concentration area. The thickness of a mud layer can be rapidly increased, and the preparation time for high-concentration underflow discharging of the thickener can be shortened; water seeping from the tailing slurry can quickly rise and fall off; the overflow runoff speed can be controlled, and muddy material carrying is prevented; a sand discharging funnel can be prevented from being formed, settled sand is eliminated, and the effective storage volume of the tank body is increased; a rake-free design is adopted, the structure is simpler, and no power is consumed in the sand setting process; and long-term storage is facilitated, and rapid concentration of low-concentration tailing slurry can be realized.

Description

technical field [0001] The invention relates to the technical field of resource utilization of mine solid waste, in particular to a fast thickener. Background technique [0002] The commonly used filling aggregate in metal mines is tailings (or tailings, including graded tailings and full tailings). The main filling process is to pump the tailings from the dressing plant with a low mass concentration (generally 10-20%, 40-45% when passing through a high-efficiency thickener) to the deep cone thickener of the filling preparation station, and flocculate and concentrate to a higher concentration (about 55-80%) and then discharged into the mixing system, mixed and stirred with the cementitious material (the cementitious material may not be added during non-cemented filling) to form a filling slurry that meets the requirements, and fill the pipeline through drilling and downhole, self-flowing or pumping Send to the place to be charged. [0003] According to the structure and op...

AI Technical Summary

Problems solved by technology

[0004] 1. The biggest feature of the deep cone thickener is the rake frame structure. The main function of the rake frame is to gather the slurry in the deep cone pool in the central barrel. The structure of the rake frame is complex, and the cost accounts for more than 50-80% of the entire thickener.

[0005] 2. The diameter of the tank of the thickener is large, and the thickness of the mud layer rises slowly. It takes a long time after the start-up for the thickness of the mud layer to meet the requirements of the stable discharge concentration of the bottom flow; The amount of sand is large and the discharge time is long, so it is difficult to realize instant stop

The drainage rod system continues to move in the mud layer, the tailings flocs are gradually destroyed, and the coarse and fine particles are separated. When the thickener cannot discharge continuously, the coarse-grained tailings settle rapidly and gather at the bottom of the thickener tank, and the thickener resumes discharge. After feeding, all of them are coarse-grained materials, which can easily cause pipe blockage; when there is no discharge for a long time, it is easy to cause a rake accident

[0007] 4. The inclination angle of the tank bottom of the thickener is small, generally below 30°, the grit cannot flow to the discharge port by itself, and is compressed by the upper mud layer for a long time, the grit at the bottom of the warehouse is easy to dehydrate and harden, reducing the storage capacity; Fluctuation and clogging of the sand discharge pipe

[0008] 5. The non-powered thickener mainly relies on the compression of the mud layer to increase the concentration of the sand discharged from the bottom of the thickener. There is no power device in the thickener, and the water contained in the tailings flocs cannot be discharged quickly. The discharged water has no rapid ascending channel. Slow thickening speed and low production efficiency

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