Title:
竪型溶解炉を用いた溶銑の製造方法
Document Type and Number:
Japanese Patent JP5867427
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method in which a molten iron is produced by charging, as a raw and fuel material, an iron source consisting mainly of ferrous scrap, a coke and a slag-making agent from the furnace top part of a vertical melting furnace, and melting the iron source mainly by the combustion heat of coke, that can reduce the coke use amount by effectively suppressing the gasification of coke.SOLUTION: The problem is solved by forming a raw and fuel material layer formed by one batch charge of a raw and fuel material from a furnace top part such that a raw material layer x consisting of a raw material containing CaO by 5 mass% or more is in contact with a coke layer c in a state of uneven distribution around the furnace wall periphery. By reducing the contact between a raw material layer x and a coke layer c the reactivity of coke is suppressed and thus the gasification of coke is suppressed, thereby the coke use amount can be reduced.
Inventors:
Ryota Murai
Yuki Iwai
Yuki Iwai
Application Number:
JP2013041850A
Publication Date:
February 24, 2016
Filing Date:
March 04, 2013
Export Citation:
Assignee:
jfe Steel Corporation
International Classes:
C21B11/02; F27B1/20; F27D3/10
Domestic Patent References:
| JP8219644A | ||||
| JP7278634A | ||||
| JP11189816A | ||||
| JP20023917A |
Attorney, Agent or Firm:
Hideto Tomabechi