Tailing thickener and tailing treatment system

Abstract

The invention provides a tailing thickener comprising a tank body, a rotating shaft, a rake frame, a bridge frame, a speed reducer, a power device and a feeding pipe. A feeding device is fixed below the bridge frame; the feeding device comprises a mixing device and an distributing device; the mixing device comprises a mixing cylinder which is arranged outside the rotating shaft and is coaxial withthe rotating shaft and stirring blades which are arranged on the rotating shaft and correspond to the mixing cylinder; the distributing device comprises a distributing cylinder which is rotatably connected with the mixing cylinder and is fixed on the rotating shaft; a plurality of distributing cylinders which are horizontally arranged at the lower end of the mixing cylinder and are communicated with the mixing cylinder are arranged below the distributing cylinder; an annular rack is arranged on the inner wall of the tank body, a feeding shaft coaxial with the distributing cylinder is arrangedin the distributing cylinder, spiral feeding blades are arranged on the feeding shaft, a distributing hole is formed in the bottom of the distributing cylinder, and a gear meshed with the rack is arranged at the end, close to the inner wall of the tank body, of the feeding shaft. Mixing caused by the fact that stirred slurry directly impacts the bottom of the tank body can be avoided and mixing caused by excessive slurry entering the mixing cylinder within a short time is avoided.

Description

technical field [0001] The present application relates to the technical field of tailings processing equipment, in particular, to a tailings thickener and a tailings processing system. Background technique [0002] The thickener is a solid-liquid separation device based on gravity settlement, usually a cylindrical shallow tank with a conical bottom built from concrete, wood or metal welded plates as structural materials. The ore pulp with a solid weight of 10% to 20% can be concentrated into an underflow ore pulp with a solid content of 45% to 55% by gravity sedimentation, and it can be installed in a thickener to run at a slow speed (1 / 3 to 1 / 5r / min ) of the rake, so that the thickened underflow pulp is discharged from the underflow port at the bottom of the thickener. The thickener is mainly used in mining, water treatment, environmental protection and other fields. The modern high-efficiency thickener mainly promotes the material to be quickly Settling and thickening, an...

AI Technical Summary

Problems solved by technology

[0003] The existing technology generally adopts tangential feeding, and uses the rotating flow to make the slurry evenly distributed in the circumferential direction inside the feeding cylinder, but it does not reduce the force of the slurry acting on the bottom of the thickener, and at the same time gives a certain Disturbance makes it evenly mixed with the flocculant, which is convenient for settlement. However, the force of the current settlement to the bottom is too large, which will cause the thickener to run and mix and affect the sedimentation effect of the thickener. At the same time, due to the uneven feeding speed of the slurry, when When there is too much slurry, the phenomenon of running and mixing will also occur when the settling speed of the thickener is greater than that of the thickener.

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