Large horizontal sand silo suitable for combined filling of mortar in dressing plants and dry tailings in tailings ponds

Abstract

The invention discloses a large horizontal sand silo suitable for combined filling of mortar in dressing plants and dry tailings in tailings ponds. The sand silo is characterized by being divided into a mortar making region (I), a transport region (II) and a tailings storage region (III), wherein ring-shaped high-pressure water supply branch pipes (c) and high-pressure gas supply branch pipes (a) are laid in the mortar making region (I); high-pressure water spray nozzles (d) are horizontally installed on the ring-shaped high-pressure water supply branch pipes (c); high-pressure gas spray nozzles (b) are vertically installed on the high-pressure gas supply branch pipes (a); high-pressure water supply branch pipes (c) and high-pressure gas supply branch pipes (a) are laid in the transport region (II) in parallel; high-pressure water spray nozzles (d) are horizontally installed on the high-pressure water supply branch pipes (c); high-pressure gas spray nozzles (b) are vertically installed on the high-pressure gas supply branch pipes (a); the dip angle of the bottom plate of the horizontal sand silo is 23-26 degrees; the length of the mortar making region (I) along the trend of the sand silo is 3-5 meters; the length of the transport region (II) along the trend of the sand silo is 5-8 meters; and the length of the tailings storage region (III) along the trend of the sand silo is 4-7 meters. The large horizontal sand silo is applied to mortar making, can be used for realizing high-capacity continuous filling, ensuring the quality of the fillers, shortening the unsupported roof time in the goafs, reducing the construction investment of the filling stations and ensuring mine mining and filling to achieve balance and is beneficial to realization of safety production and environmental friendliness of the mines.

Description

technical field [0001] The invention relates to a slurry-making system of an underground mine filling station, in particular to a large-scale horizontal sand bin filling slurry-making system for joint filling of mineral dressing plant mortar and tailings pond dry tailing sand. It is suitable for all kinds of mines to use the horizontal sand bin for joint filling with the mortar from the concentrator or the dry tailings from the tailings pond. Background technique [0002] In order to fully recover underground resources and increase ecological protection, filling mining has become the development trend of the mining industry. Filling mining has many advantages: the use of tailings for filling can solve the problems of difficult land acquisition and huge investment in land acquisition and construction of mine tailings ponds; The tailings are used for filling, which can reduce the risk of this risk source, or even eliminate this risk source, and can solve the problem of high m...

AI Technical Summary

Problems solved by technology

However, the vertical sand silo usually uses the mortar from the mineral processing plant as the pulping material, and because the mortar concentration of the mineral processing plant is too low, the mortar transported to the sand silo can only meet the filling requirements of high-concentration mortar after many times of overflow and sedimentation. The slurry takes a long time to achieve continuous filling, which not only affects the output of the mine, but also unbalances the mining and filling of the mine and increases the unsafe factors of the mine; some mines also increase the concentration of the mortar to 40% by building a large thickener After left or right, it is transported to the sand bin for pulping, which not only increases the investment and operating costs, but also the concentration of the mortar concentrated by the thickener cannot reach the high concentration required for the underground filling body, and it also needs to go through several overflow sedimentation The concentration required for pulping can be reached after a long time, and the pulping time is also longer

At the same time, the height of the vertical sand bin from the ground is relatively high, the construction process is relatively complicated, and the cost of filling station construction and filling costs are also high, which is difficult for medium and small mines to bear in terms of funds

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