Material segregation apparatus for blast furnace top bunker

A raw material silo and raw material technology, applied in the field of raw material silo, can solve the problems of raw material segregation effect limit and length limitation, and achieve the effect of improving raw material segregation effect and avoiding interference.

Active Publication Date: 2012-09-12
JFE STEEL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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 ro

Method used

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  • Material segregation apparatus for blast furnace top bunker
  • Material segregation apparatus for blast furnace top bunker
  • Material segregation apparatus for blast furnace top bunker

Examples

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Embodiment Construction

[0020] An embodiment of the raw material segregation device of the blast furnace roof raw material warehouse of the present invention will be described with reference to the accompanying drawings.

[0021] figure 1 It is a longitudinal sectional view of the blast furnace roof to which the automatic covering structure of this Example is applied. A plurality of raw material bins 2 are arranged above the furnace roof of the blast furnace 1 . The raw material silos 2 respectively store the raw materials 3 to be charged into the blast furnace 1 . Coke and iron ore can be cited as examples of the charged raw material 3 . A gate 16 is provided at the upper end of the raw material bin 2, and by opening the gate 16, the loaded raw material 3 is loaded into the raw material bin. A gate 4 is provided at the lower end of the raw material bin 2 , and by opening the gate 4 , the charged raw material 3 inside is dropped into the blast furnace 1 . A distribution chute 5 is provided below ...

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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...

Claims

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Application Information

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IPC IPC(8): C21B7/18
CPCC21B7/20F27B1/20F27D3/10F27D2003/105C21B7/18
Inventor 大友隆史
Owner JFE STEEL CORP
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