Sintering, mixing and material distributing device for blast furnace

Abstract

The invention discloses a sintering, mixing and material distributing device for a blast furnace. The device comprises a head-swinging belt, a storage bin and a wide belt, wherein a discharging end of the head-swinging belt is arranged above a feeding inlet of the storage bin, the bottom surface of the front wall of a discharging hole at the lower end of the storage bin is shaped like a concave circular arc, and wide belts are horizontally arranged below the storage bin at intervals. The sintering mixing and material distributing device disclosed by the invention is simple and reasonable in structure, the shape of the bottom surface of the discharging hole of the storage bin is improved and a mixing charge level in a 'meniscus shape' is pulled off in a wide belt material dragging manner, thus sintering and mixed materials are distributed more reasonably, 'edge effect' in a sintering process is eliminated, and sintering capacity can be greatly improved.

Description

technical field [0001] The invention relates to a blast furnace sintering mixing distribution device, which belongs to the improvement of the structure of the blast furnace sintering distribution device. Background technique [0002] Sintering is an important part of blast furnace smelting: mix iron-containing raw materials, coke powder, flux, etc. according to a certain proportion and add water agent, distribute the mixture on the sintering machine trolley through mixing and granulation, and pass the negative pressure after ignition. The compressed air ignites the coke powder in the mixture, and the high temperature generated by the combustion of the coke powder melts and bonds the mixture into sintered ore. This process is called sintering. [0003] Since the sintering production process is negative pressure ventilation, one of the important influencing factors is determined: the air permeability of the mixture distributed on the sintering machine trolley, and the air perm...

AI Technical Summary

Problems solved by technology

[0006] The problem with the first distribution method is that the mixture is taken out from the silo when the drum rotates, and the materials larger than 3mm are squeezed during the discharge process, and many granular materials larger than 3mm produced by mixing and granulation are crushed. Squeeze and crush, resulting in poor air permeability after the material is distributed on the sintering machine trolley, which affects the output and quality of sintered ore, and granulation is meaningless

Because there is no buffer silo in the second material distribution method, when the amount of mixed material fluctuates, how much material comes in and how much material comes out, and there is no adjustment method for the material, so it is difficult to realize the four-way operation of swing belt, wide belt, sintering machine and ring cooler. Cascade adjustment brings great difficulty to the production control of sintering

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