Dehydration device for thick paste in tailings pond in polymetallic mine plant and dehydration method of device

Abstract

The invention discloses a dehydration device for thick paste in a tailings pond in a polymetallic mine plant and a dehydration method of the device, and relates to the technical field of thick paste dehydration of mine tailings. The device includes a body arranged on a supporting iron frame, and a central round pipe is inserted into the body; the top of the central round pipe is connected with a motor, and the bottom is connected with a rotary paddle board; the motor is fixedly arranged on the top of the body, and the rotary paddle board is arranged in the body; a material inlet is arranged inthe top of the body, a mud discharge opening is arranged in the bottom, a water outlet pipe communicates with the side wall of the body, and a valve is arranged on the water outlet pipe; a heating rod is installed in the body, an annular conductor is wound outside the body, the annular conductor is connected to a control box, and a variable magnetic field is provided through the annular conductor; and electrodes are installed in the body. The dehydration method based on the above device provided by the invention has wide applicability, has small thick paste environmental influence after dehydration, realizes modularity and is easy to maintain; and the method has higher dehydration efficiency, and is beneficial to practical application of deep dehydration of the thick paste in the tailingspond in the tungsten-zinc polymetallic mine plant.

Description

technical field [0001] The invention relates to the technical field of thick paste dehydration of mine tailings, in particular to a thick paste dehydration device and a dehydration method for polymetallic mine tailings ponds. Background technique [0002] Tailings treatment is an important link after ore sorting, and it is also an important part of the concentrator. However, there are many environmental and safety problems in the traditional tailings surface stockpiling treatment methods. Safe and efficient tailings treatment technologies have been continuously developed at home and abroad, and have gradually been applied industrially. [0003] The pretreatment of paste tailings dry storage requires dehydration of dense paste. The dehydration process of general dense paste is only to achieve the purpose of dehydration through external force extrusion. The most common one is the stacked screw type dense paste dehydrator, which is an environmentally friendly equipment for sl...

AI Technical Summary

Problems solved by technology

[0004] When the existing stacked screw type dense paste dehydrator is used, the sludge needs to be transported from the sewage inlet into the stacked screw body, the screw shaft is rotated by the power device, and the screw shaft is squeezed between the fixed ring and the moving ring. , separate the liquid in the sludge, and discharge it from the gap between the fixed ring and the moving ring, and at the same time, the dewatered sludge forms a mud cake through the extrusion of the screw shaft and the back pressure plate, and discharges it through the sewage outlet; now Some snail-type dense paste dehydrators are found in use, because the liquid discharged from the snail still contains some pollutants, and it is easy to cause secondary pollution to the environment if it is directly discharged into the environment; Before transporting the sludge, it is necessary to add flocculation to the sludge. When the sludge after flocculation is not stirred evenly, it is easy to affect the dehydration effect of the sludge

The stacked screw thick paste dehydrator has the effect of dehydrating the thick paste through stacking and rotating agitation, so the most critical problem is that its dehydration efficiency is not high, which will directly lead to its limited application and thick unit volume. Disadvantages such as huge energy consumption for paste dehydration

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