System for processing coal gangue into cement dry powder raw material and processing method of system

Abstract

The invention relates to a system for processing coal gangue into a cement dry powder raw material and a processing method of the system. The system comprises a coal gangue rolling and crushing cylinder, a coal gangue heating and grinding device and a coal gangue powder combusting and decarbonizing furnace. Firstly, coal gangue raw materials enter the coal gangue rolling and crushing cylinder to be rolled and grinded to obtain initial coal gangue powder, secondly, the initial coal gangue powder is conveyed into the coal gangue heating and grinding device to be grinded to obtain grinded coal gangue powder, finally, the grinded coal gangue powder is conveyed into the coal gangue powder combusting and decarbonizing furnace to be combusted and decarbonized to obtain finished product coal gangue powder, and the finished product coal gangue powder serves as a base raw material for producing cement.

Description

technical field [0001] The invention relates to a system and a processing method for producing cement dry powder raw materials, in particular to a system and a processing method for using coal gangue as a raw material and processing the coal gangue into the main raw material for producing environmentally friendly cement. Background technique [0002] As we all know, 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 and harder than coal that is associated with coal seams during the coal formation process. It is solid waste discharged during excavation, mining and coal washing. It is a kind of solid waste in the mining industry, including gangue washing in coal washing plants, hand-selected gangue in coal production, coal and rock discharged from half-coal roadway and rock roadway excavation, and white gangue outside the coal series piled up with coal gangue etc. mixture. It is a mix...

AI Technical Summary

Problems solved by technology

The use of coal gangue to make building materials, especially cement raw materials, has the characteristics of large utilization and relatively simple process. However, there are currently two main technical problems in processing coal gangue into cement dry powder raw materials. First, the equipment technology for crushing coal gangue raw materials It cannot meet the requirements, the crushing efficiency is not high, and the particles after crushing are not uniform. Secondly, the decarbonization effect of the crushed raw materials is not good, and the minimum requirement of carbon content cannot be met. This is the main shortcoming of the traditional technology

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