Carburization degree of iron nugget produced by rapid heating of powderly iron, iron oxide in slag and carbon mixture

Ko Ichiro Ohno, Takahiro Miki, Yasushi Sasaki, Milsutaka Hino

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Iron nugget making process by rapid heating reduction of powdery iron ore and pulverized coal mixture is regarded as one of the novel iron-making processes. Iron carburization during smelting reduction is especially important reaction step from the viewpoint of saving energy in this process. If the rate and efficiency of carburization reaction are increased, energy consumption of the process will be reduced to large extent. The purpose of this study is to clarify the carburization degree of iron nugget during smelting reduction of the mixture. The sample was prepared from graphite, electrolytic iron powder and synthetic slag containing iron oxide to simulate iron carburization phenomena during smelting reduction of the mixture in the present work. The sample was quenched immediately after the mixture changed into nugget shape in a rapid heating process. Laser microscope combined with infrared image furnace was used for sample heating and observation of carburization phenomena, and carbon content in the nugget was chemically analyzed after quenching. From above-mentioned investigations, it was revealed that the occurrence of carburization during smelting reduction in the sample mixture is advantageous to obtain higher carbon contain iron nugget, novel iron making process, iron carburization, smelting reduction, confocal laser microscope combined with infrared image furnace.

Original languageEnglish
Pages (from-to)821-826
Number of pages6
JournalTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume95
Issue number12
DOIs
Publication statusPublished - Dec 1 2009

Fingerprint

slags
Iron oxides
iron oxides
Slags
Carbon
Iron
smelting
Smelting
Heating
iron
heating
carbon
image furnaces
Furnaces
Microscopes
Infrared radiation
microscopes
Iron powder
Graphite
Industrial heating

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

Carburization degree of iron nugget produced by rapid heating of powderly iron, iron oxide in slag and carbon mixture. / Ohno, Ko Ichiro; Miki, Takahiro; Sasaki, Yasushi; Hino, Milsutaka.

In: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, Vol. 95, No. 12, 01.12.2009, p. 821-826.

Research output: Contribution to journalArticle

@article{4423cff7cb26420a842b3209bb8d5503,
title = "Carburization degree of iron nugget produced by rapid heating of powderly iron, iron oxide in slag and carbon mixture",
abstract = "Iron nugget making process by rapid heating reduction of powdery iron ore and pulverized coal mixture is regarded as one of the novel iron-making processes. Iron carburization during smelting reduction is especially important reaction step from the viewpoint of saving energy in this process. If the rate and efficiency of carburization reaction are increased, energy consumption of the process will be reduced to large extent. The purpose of this study is to clarify the carburization degree of iron nugget during smelting reduction of the mixture. The sample was prepared from graphite, electrolytic iron powder and synthetic slag containing iron oxide to simulate iron carburization phenomena during smelting reduction of the mixture in the present work. The sample was quenched immediately after the mixture changed into nugget shape in a rapid heating process. Laser microscope combined with infrared image furnace was used for sample heating and observation of carburization phenomena, and carbon content in the nugget was chemically analyzed after quenching. From above-mentioned investigations, it was revealed that the occurrence of carburization during smelting reduction in the sample mixture is advantageous to obtain higher carbon contain iron nugget, novel iron making process, iron carburization, smelting reduction, confocal laser microscope combined with infrared image furnace.",
author = "Ohno, {Ko Ichiro} and Takahiro Miki and Yasushi Sasaki and Milsutaka Hino",
year = "2009",
month = "12",
day = "1",
doi = "10.2355/tetsutohagane.95.821",
language = "English",
volume = "95",
pages = "821--826",
journal = "Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan",
issn = "0021-1575",
publisher = "一般社団法人 日本鉄鋼協会",
number = "12",

}

TY - JOUR

T1 - Carburization degree of iron nugget produced by rapid heating of powderly iron, iron oxide in slag and carbon mixture

AU - Ohno, Ko Ichiro

AU - Miki, Takahiro

AU - Sasaki, Yasushi

AU - Hino, Milsutaka

PY - 2009/12/1

Y1 - 2009/12/1

N2 - Iron nugget making process by rapid heating reduction of powdery iron ore and pulverized coal mixture is regarded as one of the novel iron-making processes. Iron carburization during smelting reduction is especially important reaction step from the viewpoint of saving energy in this process. If the rate and efficiency of carburization reaction are increased, energy consumption of the process will be reduced to large extent. The purpose of this study is to clarify the carburization degree of iron nugget during smelting reduction of the mixture. The sample was prepared from graphite, electrolytic iron powder and synthetic slag containing iron oxide to simulate iron carburization phenomena during smelting reduction of the mixture in the present work. The sample was quenched immediately after the mixture changed into nugget shape in a rapid heating process. Laser microscope combined with infrared image furnace was used for sample heating and observation of carburization phenomena, and carbon content in the nugget was chemically analyzed after quenching. From above-mentioned investigations, it was revealed that the occurrence of carburization during smelting reduction in the sample mixture is advantageous to obtain higher carbon contain iron nugget, novel iron making process, iron carburization, smelting reduction, confocal laser microscope combined with infrared image furnace.

AB - Iron nugget making process by rapid heating reduction of powdery iron ore and pulverized coal mixture is regarded as one of the novel iron-making processes. Iron carburization during smelting reduction is especially important reaction step from the viewpoint of saving energy in this process. If the rate and efficiency of carburization reaction are increased, energy consumption of the process will be reduced to large extent. The purpose of this study is to clarify the carburization degree of iron nugget during smelting reduction of the mixture. The sample was prepared from graphite, electrolytic iron powder and synthetic slag containing iron oxide to simulate iron carburization phenomena during smelting reduction of the mixture in the present work. The sample was quenched immediately after the mixture changed into nugget shape in a rapid heating process. Laser microscope combined with infrared image furnace was used for sample heating and observation of carburization phenomena, and carbon content in the nugget was chemically analyzed after quenching. From above-mentioned investigations, it was revealed that the occurrence of carburization during smelting reduction in the sample mixture is advantageous to obtain higher carbon contain iron nugget, novel iron making process, iron carburization, smelting reduction, confocal laser microscope combined with infrared image furnace.

UR - http://www.scopus.com/inward/record.url?scp=77249172832&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77249172832&partnerID=8YFLogxK

U2 - 10.2355/tetsutohagane.95.821

DO - 10.2355/tetsutohagane.95.821

M3 - Article

AN - SCOPUS:77249172832

VL - 95

SP - 821

EP - 826

JO - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

JF - Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan

SN - 0021-1575

IS - 12

ER -