Influence of atmosphere and basicity on softening and melting behaviors of the CaO-FeO-SiO2-Al2O3-MgO System

Shigeru Ueda, Takahiro Miki, Sun Joong Kim, Xu Gao, Hiroshi Nogami, Shin Ya Kitamura

研究成果: Article査読

3 被引用数 (Scopus)

抄録

In this study, we analyze the softening and melting behaviors of the CaO-FeO-SiO2-Al2O3-MgO system for improving gas permeability in a blast furnace. The temperature of the oxide is increased to 1 723 or 1 773 K in a CO/CO2 mixture; the softening and melting temperatures and the temperature of penetration into the coke bed are measured. Because the CO/CO2 ratio in the atmosphere influences the stable state of iron or iron oxide, the softening and melting behaviors are investigated for numerous CO/CO2 ratios. We observe that the reduction of the sample progresses in an atmosphere with a high CO/CO2 ratio, and thus, the softening temperature increases. Because the composition of the oxidation phase influences the solidus and liquidus temperatures, the influence of basicity on the phenomena is also investigated, and a method of reducing the difference between the softening and dripping temperatures is discussed.

本文言語English
ページ(範囲)1380-1388
ページ数9
ジャーナルIsij International
60
7
DOI
出版ステータスPublished - 2020

ASJC Scopus subject areas

  • 材料力学
  • 機械工学
  • 金属および合金
  • 材料化学

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