Method for processing coal gangue and red mud

Abstract

The invention discloses a method for processing coal gangue and red mud, which belongs to the technical field of pollution treatment of the coal gangue and the red mud, and aims at solving the technical problem to provide a layer upon layer piling method which is low in cost and can reduce environment pollution of the coal gangue and the red mud in maximum limit. The technical scheme is that the coal gangue and the red mud are laminated and piled, wherein a bottom first layer is provided with the coal gangue, a bottom second layer is provided with the red mud, and then the coal gangue and the red mud are alternately laminated and piled layer upon layer, at last the red mud is laminated and piled on a top layer, the thickness of the coal gangue on the first layer on the bottom first layer is 60-500cm, the thickness of the red mud on the bottom second layer is 5-100cm, the thickness of the red mud on the top layer is 30-50cm, and the thicknesses of the other layers are 5-15cm. The method for processing the coal gangue and the red mud can pile and process two kinds of production wastes such as the coal gangue and the red mud at the same time, and achieves the purpose of reducing environment pollution by neutralizing the coal gangue and the red mud with each other.

Description

technical field [0001] The invention relates to a coal gangue and red mud treatment method, which belongs to the technical field of coal gangue and red mud pollution treatment. Background technique [0002] Coal gangue is solid waste discharged during the coal mining process and coal washing process. It is a black-gray rock with low carbon content, sulfide content, and harder than coal that is associated with coal seams during the coal formation process. Including the excavation gangue during the roadway excavation, the gangue extracted from the roof, floor and interlayer during the mining process, and the gangue picked out during the coal washing process. Every time an average of 100 million tons of coal is produced in my country, about 14 million tons of gangue are discharged; from the perspective of coal washing and processing, the amount of gangue discharged for every 100 million tons of coking coal washed is 20 million tons, and the amount of gangue discharged for ever...

AI Technical Summary

Problems solved by technology

Sewage with high alkalinity seeps into the ground or enters the surface water, which increases the pH value of the water body, so that it exceeds the corresponding national standard. At the same time, because the pH value often affects the toxicity of the compounds in the water, it will also cause more serious water pollution.