Goaf circulating grouting and filling system for treating solid waste

Abstract

The invention discloses a goaf circulating grouting and filling system for treating solid waste. The goaf circulating grouting and filling system comprises a slurrying system, a grouting and filling system and a water resource recovery system, wherein the slurrying system is used for grinding solid waste to be treated into micro-particles with set particle sizes, and mixing the micro-particles with water to prepare slurry with specific concentration; the grouting and filling system is used for injecting the slurry prepared by the slurrying system into a goaf from a high position, the slurry undergoes solid-liquid separation in the process of flowing from the high position to a low position in the goaf by utilizing the filtering characteristic of the goaf and the precipitation characteristic of the slurry, and solid particles precipitate in the goaf, so that the purpose of treating solid wastes is achieved; and the water resource recovery system is used for recovering purified water flowing to the low position in the goaf and conveying the purified water to the slurrying system for slurrying of the solid waste, so that cyclic utilization of water resources is achieved. Compared witha traditional solid waste filling method, the goaf circulating grouting and filling system has the advantages of being small in construction work amount, small in investment, low in cost, small in influence on a mine production system and the like.

Description

technical field [0001] The invention relates to a system for processing solid waste, in particular to a gob circulating grouting filling system for processing solid waste. Background technique [0002] In recent years, with the continuous development of my country's industrial level, the treatment of industrial solid waste has become a technical problem that plagues many enterprises, especially like gangue produced in the production process of coal mines and fly ash produced after coal combustion in thermal power plants. Due to the huge output of waste, the damage to the ecological environment caused by ground discharge is very serious, so it is extremely difficult to deal with. At present, there are many ways to deal with solid waste in China, including comprehensive utilization, manufacturing of building materials, etc., but the way to deal with solid waste on a large scale is mainly to fill underground mined-out areas. Due to the large investment and high cost of traditio...

AI Technical Summary

Problems solved by technology

Due to the large investment and high cost of traditional solid waste underground filling, the popularization and application of filling technology is seriously restricted. Therefore, a solid waste filling system with less investment, small engineering and low operating cost is urgently needed

Images