Pellet chain grate bulk material comprehensive treatment method and system

Abstract

The invention discloses a pellet chain grate bulk material comprehensive treatment method and system. In a unit time period, bulk materials generated by a chain grate are collected and screened, the particle size, strength, temperature and water content of oversize coarse bulk materials are detected, then comprehensive performance index values of the bulk materials are obtained through calculation according to a bulk material sorting mathematical model, qualified bulk materials are screened out and directly recycled to a rotary kiln to be roasted, and unqualified oversize coarse-particle bulk materials and undersize fine-particle bulk materials are used as pelletizing raw and auxiliary materials to be directly pelletized. According to the method, the bulk materials in all sections of the chain grate are collected and treated in a centralized mode, recycling of the bulk materials in a pellet production system is realized, outward transport disposal is avoided, the outward transport cost, the stockpiling cost of a stockyard, the material loss cost and the mixed ore depreciation cost are lowered, meanwhile, the environment is improved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a collection device for pellet bulk material of a chain grate machine, in particular to a method and a processing system for comprehensively processing the bulk material of a chain grate machine, and belongs to the field of recovery of pellet bulk material of a chain grate machine. Background technique [0002] Pelletizing is a method of artificial bulk raw materials, and it is a process of turning powdery materials into physical performance phases and chemical compositions that can meet the requirements of the next step of processing. The pellet production process is a production process for extracting pellets. Pelletizing and sintering are two commonly used processes for extracting iron ore in the iron and steel smelting industry. Pellets are finely ground iron concentrate powder or other iron-containing powders mixed with a small amount of additives, then rolled into balls through a pelletizer under the condition of adding w...

AI Technical Summary

Problems solved by technology

[0005] 1) The bulk material is stored in the bulk material trough and transported by car to the stockyard for storage as sintering homogenization ingredients, which increases the transportation cost: such as stockyard stockpiling cost, material loss cost, miscellaneous ore depreciation cost, etc.; cannot be realized Internal recycling of pellet plant materials

[0006] 2) There is fine dust in the bulk material, and the dust is relatively serious during the transfer and loading process, resulting in poor site and surrounding environment

[0007] 3) The wet broken balls under the sieve of the chain grate roller distributor in the bulk material will be blocked after entering the bulk material bin, resulting in poor feeding

[0008] 4) The bucket elevator has no dust removal facilities, and the site environment is harsh

[0009] 5) Due to the high temperature of the bulk material near the second stage of preheating of the chain grate machine, the service life of the belt conveyor belt is reduced;

[0010] 6) Bulk material transfer occupies the stockyard site, which affects the efficiency of the stockyard operation

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