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Molten iron manufacturing apparatus and manufacturing method thereof

A preparation device and molten iron technology, applied in fluidized bed furnaces and other directions, can solve the problems of reducing production efficiency, difficult to carry out continuous preparation, reducing screw conveying efficiency, etc., and achieve the effect of preventing the decline of screw conveying efficiency.

Inactive Publication Date: 2016-06-15
POSCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Carbon particles contained in direct reduced iron cause problems in that the conveying efficiency of a screw for conveying raw materials is lowered, and the production efficiency is lowered to make continuous production difficult

Method used

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  • Molten iron manufacturing apparatus and manufacturing method thereof
  • Molten iron manufacturing apparatus and manufacturing method thereof
  • Molten iron manufacturing apparatus and manufacturing method thereof

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Embodiment Construction

[0022] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art to which the present invention pertains can easily implement. As can be easily understood by those skilled in the art to which the present invention pertains, the embodiments to be described later can be modified into various forms without departing from the concept and scope of the present invention. In the drawings, the same or similar parts are denoted by the same reference numerals as much as possible.

[0023] The terminology used below is provided to refer to specific embodiments only, and is not intended to limit the present invention. The singular form used herein also includes the plural form where the sentence does not indicate an express meaning to the contrary. The meaning of "comprising" used in the specification is to refine specific characteristics, fields, integers, steps, actions, elements and / or co...

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Abstract

A molten iron manufacturing apparatus, according to the present invention, comprises: a plurality of reduction furnaces for manufacturing reduced iron using an iron-containing mixture introduced thereinto; a supply bin connected to the reduction furnaces, the reduced iron being introduced into the supply bin; a reduced-iron compressing device that is connected to the supply bin and compresses the reduced iron to manufacture compacted iron; and a melter gasifier that receives the compacted iron and manufactures molten iron, wherein a combustion part is included for removing carbon of the reduced iron supplied to the supply bin.

Description

technical field [0001] The present invention relates to a molten iron preparation device and a preparation method thereof, in particular to a device and a preparation method for preparing molten iron by utilizing reduced iron reduced by a multistage reduction furnace. Background technique [0002] The recently developed direct ironmaking (FINEX) process uses a fluidized furnace to make powdered iron ore into smaller shaped iron shapes, and bituminous coal powder is also made into smaller coals and then put into a melting furnace to extract molten iron. [0003] The direct ironmaking process separates ordinary coal (powdered coal) and powdered iron ore (powdered ore) only by particle size in the state of initial mining, and then uses them directly after passing through a fluidized reduction furnace. Therefore, it does not go through the sintering process and coke preparation process, so its equipment investment cost is lower than that of conventional blast furnaces, and it do...

Claims

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Application Information

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IPC IPC(8): C21B13/00
CPCC21B13/002C21B13/0093C21B13/143C21B13/146C21B13/00
Inventor 申铭赞赵一显金度升郑载勋李圭福
Owner POSCO