Underground all tailings-waste gypsum filling system and filling method

A technology of full tailings and waste gypsum, which is applied in filling materials, safety devices, earthwork drilling and mining, etc., can solve the problems of filling drilling wear and other problems, and achieve the goals of avoiding severe wear, reducing the loss of conveying resistance, and reducing infrastructure investment Effect

Active Publication Date: 2018-11-30
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

It can overcome the limitation of surface industrial site conditions, use the existing underground roadway and chamber engineering, and solve the technical problem of serious we

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  • Underground all tailings-waste gypsum filling system and filling method

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Embodiment 1

[0043] A copper-zinc mine has been mined underground for many years, and has been developed to the middle section of -827 m, with a maximum mining depth of more than 1300 m. It mainly adopts the open-field and subsequent filling mining method and the upward horizontal layered filling mining method. The filling materials used in the mine are mainly ore dressing and grading tailings, excavation waste rock and cement. Coarse-grained tailings over 200 mesh are sent to the mixing drum by electric rakes and screw conveyors, mixed with auxiliary materials such as cement and river sand, and then sent to the middle stages of production by filling boreholes, with a filling concentration of about 50%-60%.

[0044] With the excavation of the development system, the ore body continues to lie eastward, the vertical height difference of the filling pipeline reaches 1020 meters, and the horizontal distance of the stope reaches 2000 meters. It can be filled with low concentration (about 50% ma...

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Abstract

The invention belongs to the field of metal ore all tailings gypsum filling, and particularly relates to an underground all tailings-waste gypsum filling system and filling method. The filling systemand filling method are suitable for underground construction of an all tailings gypsum filling station and cut-and-filling stoping method mine applications with underground tunneling dead rock in pits. The underground all tailings-waste gypsum filling system utilizes the existing underground chamber or roadway engineering and achieves the effect the underground dead rock can no longer be requiredto be lifted to the surface for storage or treatment. At the same time, the beneficiation all tailings are made into the gypsum for bashing, the stock of all tailings in a surface tailings pond is reduced, investment and operating costs are greatly saved, and the mining operation safety conditions are improved.

Description

technical field [0001] The invention belongs to the field of full tailings paste filling of metal mines, and in particular relates to an underground full tailings-waste gypsum filling system and a method of use, which are suitable for underground construction of full tailings paste filling stations and excavation of underground waste rocks. Pit filling mining method mine application. Background technique [0002] The full tailings-waste gypsum filling method is to fully dehydrate and thicken the low-concentration full-tailing mortar produced by the dressing plant, then mix it with cement and other cementitious materials, and mine excavation waste rock after crushing and screening, and prepare The paste material with the characteristics of no stratification, no segregation, and no dehydration is transported to the goaf underground by gravity or pump pressure. On the one hand, the paste filling solves the environmental pollution problem of tailings and waste rock accumulation...

Claims

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Application Information

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IPC IPC(8): E21F15/08E21F15/10E21F15/00
CPCE21F15/005E21F15/08E21F15/10
Inventor 王洪江周旭吴爱祥杨柳华王少勇
Owner UNIV OF SCI & TECH BEIJING
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