Concentrating and dry stacking system of tailings and dry stacking method

Abstract

The invention relates to a concentrating and dry stacking system of tailings and a dry stacking method. The concentrating and dry stacking system comprises a tailing concentrating system, a conveying pipeline and a tailing and scree storage field, and is characterized in that tailing pulp from a screening plant is sent into a swirler set, an overflow of the swirler set is fed, underflow paste tailings of the swirler set are discharged into a paste tailing concentrating tank, an underflow of a concentrating tank 1 is fed to a concentrating tank 2 in an underflow manner, an underflow of the concentrating tank 2 is fed to the paste tailing concentrating tank in an underflow manner, an underflow of the paste tailing concentrating tank is conveyed to the tailing and scree storage field by a pump, a paste tailing layer is piled and pressed on a waste rock layer, and water in the paste tailings gradually permeates into the bottom part of the tailing and scree storage field and converges to a water collecting tank. The overflows of the two concentrating tanks and the water in the water collecting tank are discharged into a circulating water pipeline as process water for a plant area. The concentrating and dry stacking system of the tailings and the dry stacking method are reasonable in process, safe and reliable, convenient to use, stable and reliable in operation, small in maintenance load and high in working rate, facilitate environmental protection, and save investment; and zero discharge of tailing water is truly realized.

Description

technical field [0001] The invention belongs to the field of tailings treatment in mineral processing plants, in particular to a tailings concentration and dry stacking system and a dry stacking method. Background technique [0002] At present, most of the tailings of the dressing plants are treated by the method of stockpiling tailings. The use of tailings mines first requires a suitable terrain. The best terrain is a ditch between two mountains. The accumulation of tailings ponds needs to be continuously raised, and there is a problem of multiple constructions; in addition, the tailings stockpiles are in danger of dam collapse, which is likely to cause the loss of life and property of the downstream people. In recent years, there have been several tailings pond dam failures Accidents; moreover, many dressing plants in foreign countries (such as Australia and India) are located in areas with high temperatures, where water resources are often scarce, and the tailings ponds...

AI Technical Summary

Problems solved by technology

The use of tailings mines first requires a suitable terrain. The best terrain is a ditch between two mountains. The accumulation of tailings ponds needs to be continuously raised, and there is a problem of multiple constructions; in addition, the tailings stockpiles are in danger of dam collapse, which is likely to cause the loss of life and property of the downstream people. In recent years, there have been several tailings pond dam failures Accidents; moreover, many dressing plants in foreign countries (such as Australia and India) are located in areas with high temperatures, where water resources are often scarce, and the tailings ponds have a large area. Under high temperature conditions, the water on the surface of the tailings ponds It is easy to evaporate, resulting in the loss of ring water in the dressing plant

Images