Step-type self-flow separation layer grouting filling treatment gangue pulping and slurry conveying process

Abstract

The invention discloses a step-type self-flow separation layer grouting filling treatment gangue pulping and slurry conveying process, a pulping and slurry conveying process system comprises a screening and crushing station, an iron remover is mounted at the top of the screening and crushing station, a cross screen is arranged on the first layer below the iron remover, a crusher is arranged on the second layer below the cross screen, a scraper conveyor is arranged on the third layer below the crusher; self-flow, continuity, buffering, quantification, long-distance conveying and the like in the pulping process are achieved, the occupied area of a pulping station can be reduced, intermediate conveying links are reduced, the material conveying path is shortened, stable pulping is guaranteed, the long-distance conveying problem is solved, the pulping cost is reduced, and the applicability of the separation layer grouting technology in the gangue treatment field is improved, the coal gangue can be safely treated on a large scale, the problem of mine gangue treatment is solved, the method has important significance for realizing zero emission of gangue, ensuring normal production of a mine and realizing green mining, and meanwhile, the economic benefit of an enterprise can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of coal gangue treatment and layer-separated grouting overlying rock, and in particular relates to a step-type self-flowing layer-separated grouting filling process for gangue pulping and grouting. Background technique [0002] Coal gangue is a by-product of coal production, and a large amount of discharge will cause environmental hazards such as land occupation, surface subsidence, and ecological damage. Especially in the Inner Mongolia and Shaanxi regions, where the ecological environment is fragile and there are few ways to industrialize the use of gangue. At present, gangue is mainly used in land reclamation projects. With the gradual saturation of land reclamation projects, gangue treatment will become an important factor restricting coal production. [0003] At present, mature solid filling, paste filling, and roadway filling are all used for "three-down mining" of coal resources, and can process part ...

AI Technical Summary

Problems solved by technology

However, at present, there are few applications of overlying rock separation layer grouting for the purpose of large-scale treatment of gangue; the overlying rock separation layer grouting grouting process is all arranged in a plane and occupies a large area; the process system layout is simple, and the various process links cannot be effectively connected. Realize self-flow, continuous, buffering and quantification in the pulping process; when the distance between the grouting station and the grouting hole is far away, the problem of long-distance transportation cannot be solved

Images