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Reducing furnace and apparatus for manufacturing molten iron comprising the same

A reduction furnace and molten iron technology, applied in the field of reduction furnaces, can solve the problems of uneven dispersion and segregation of iron ore

Active Publication Date: 2010-12-08
POSCO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The iron ore can be directly loaded into the reduction furnace without using additional equipment, but the iron ore may be unevenly dispersed in the reduction furnace
Therefore, segregation may occur in the reduction furnace

Method used

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  • Reducing furnace and apparatus for manufacturing molten iron comprising the same
  • Reducing furnace and apparatus for manufacturing molten iron comprising the same
  • Reducing furnace and apparatus for manufacturing molten iron comprising the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0072] Reduced iron is loaded into figure 2 Packed bed reduction furnace. Next, using the center of the packed bed reduction furnace as the origin, the distribution of reduced iron piled up in the packed bed reduction furnace was measured. The distribution of reduced iron dispersed in all directions relative to the origin is shown using a graph.

[0073] Example results

[0074] Figure 6 The distribution of fallen reduced iron according to the present embodiment is shown. Figure 6 The circle in is the inner section of the packed bed reduction furnace. Figure 6 The region indicated by the thick line in is the region in which reduced iron having a particle size of more than about 20 mm is dispersed, and the region indicated by the thin line is the region in which reduced iron having a particle size of less than about 20 mm is dispersed.

[0075] Such as Figure 6 As shown in , the reduced iron is uniformly dispersed in all directions in the packed bed reduction furna...

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Abstract

The present invention relates to a reduction furnace including a charging device that is capable of preventing segregation and an apparatus for manufacturing molten iron including the same. The reduction furnace for reducing an iron-containing material used for manufacturing molten iron may include a charging hole where the iron-containing material is charged, a first guide plate sloped toward a first direction in the reduction furnace to guide the iron-containing material to the inside of the reduction furnace, and a second guide plate fixed and sloped toward a second direction intersecting the first direction in the reduction furnace to guide the iron-containing material dropped and guided by the first guide plate. A dropping direction of the iron-containing material dropped and guided by the first guide plate is changed when the iron-containing material is guided by the second guide plate.

Description

technical field [0001] The present invention relates to a reduction furnace and an apparatus for manufacturing molten iron including the reduction furnace. More particularly, the present invention relates to a reduction furnace including an iron-containing material charging device for preventing segregation, and an apparatus for manufacturing molten iron including the reduction furnace. Background technique [0002] Recently, a smelting reduction method that can replace the conventional blast furnace melting method has been developed. In this smelting reduction method, raw coal is directly used as a fuel and a reducing agent, and iron ore is directly used as an iron source. Iron ore is reduced in a reduction furnace and molten iron is formed in a melter-gasifier. Coal briquettes formed by pressing and molding raw coal to have a predetermined size are supplied to a melter-gasifier, and oxygen is injected into the melter-gasifier to burn the coal briquettes. Thus, reduced i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B11/00
CPCF27D3/10C21B13/002F27D3/0033F27B1/20C21B13/143C21B7/20F27D3/0025C21B11/00C21B13/00
Inventor 权奇雄郑锡光崔永吉金度升蔡晟熙
Owner POSCO CO LTD
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