Burden distribution method of blast furnace

Abstract

The invention discloses a burden distribution method of a blast furnace. The burden distribution method is characterized in that a mine coke loading manner is adopted, namely two tanks of ores and a tank of coke are added in the same batch; the burden distribution manner of combining a large batch of ores and a small batch of ores is adopted, wherein the large batch of ores serves as a basic ore patch, the small batch of ores serves as the ore batch for adjusting coal gas; the loading system is KA<987654>(224331), KB <98765>(12111), J<98765431>(53222213), wherein KA represents the large batch of ores, KB represents the small batch of ores, J represents coke, and the numerical superscript represents a gear, and the numerical subscript corresponds to the number of turns of the gear. The burden distribution method of the blast furnace, provided by the invention, ensures the possibility of gas stability by adopting the mine coke loading manner and the burden distribution manner of combining the large batch of ores and the small batch of ores, solves the problem that according to the traditional burden distribution manner of the traditional blast furnace, the large batch of ores can not be adopted due to the small volume of charging buckets of the certain traditional blast furnaces, and the economic and technical index level of the blast furnaces is lower.

Description

technical field [0001] The invention relates to the technical field of ironmaking engineering, in particular to a method for distributing materials for a blast furnace. Background technique [0002] Many model experiments and blast furnace anatomy have proved that the charge inside the blast furnace keeps the distribution state of the furnace throat before reaching the tuyere softening zone, and the ore and coke present obvious layered distribution in the furnace throat, with obvious layers. After reaching the furnace waist, the gas permeability index of the ore layer and the coke layer are obviously different, that is, where there is a lot of coke, the gas flow is easy to develop, and where there is little coke, the gas flow is difficult to develop. [0003] The thickness ratio of the ore to the coke layer obviously changes the development of the coal flow, and the size of the ore batch directly affects the distribution of the gas flow, and the distribution of the gas flow ...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a blast furnace material distribution method, which solves the problem that the existing blast furnace material distribution mode makes it difficult for some existing blast furnaces to use large batches of ore due to the small volume of the material tank, which leads to the economic and technical index level of the blast furnace. Low problem