Material segregation apparatus for blast furnace top bunker

Abstract

Disclosed is a material segregation apparatus for a blast furnace top bunker, said material segregation apparatus being capable of charging material into the vicinity of the inner wall of the bunker to enhance the material segregation effect. A segregation distributor (6) is disposed at the top of a bunker (2) in such a manner that the segregation distributor (6) is rotatable about the central vertical axis (20) perpendicular to a horizontal cross-section of the bunker (2) and that the vertically lower surface of the segregation distributor (6) receives material (3) charged from above and has an angle greater than the angle of repose of the charged material (3). As a result, the segregation distributor (6) is not liable to interfere with the inner wall of the bunker (2) when the orientation of the segregation distributor (6) is changed, and the charged-material outlet (14) of the segregation distributor (6) can be brought into the vicinity of the inner wall of the bunker (2). Further, the segregation distributor (6) may have a hollow circular truncated cone shape which has an axis line (18) extending at a downward angle and which includes a cutout portion on the side thereof facing the inner wall of the bunker (2) to stabilize the outlet (14) for the charged material (3) and reliably prevent interference with the inner wall of the bunker (2).

Description

technical field [0001] The present invention relates to a raw material bin installed on the roof of a blast furnace for charging raw materials, in particular to a raw material bin suitable for loading raw materials into the raw material bin while segregating raw materials. Background technique [0002] The roof of the blast furnace is provided with a plurality of raw material bins into which raw materials such as iron ore and coke are stored separately. In the following patent document 1, the opening of the flow rate adjustment gate at the lower end of the raw material bin and the rotation speed of the distribution tank below it are controlled according to the raw material conditions, distribution method, and raw material outflow characteristics, thereby increasing the flow of raw materials into the blast furnace. distribution of degrees of freedom. [0003] In addition, we have developed technology for segregating raw materials charged to the blast furnace roof raw materia...

AI Technical Summary

Problems solved by technology

[0006] However, the segregation plate described in Patent Document 2 that can rotate around a horizontal axis may interfere with the inner wall of the raw material bin when it rotates. Therefore, its length is limited, and the raw material cannot be loaded close to the inner wall of the raw material bin. Raw material segregation effect has limit problem

Images