Activity of Iron Oxide in Slag with Nepheline Syenite Added as a Flux

被引：0

作者：

Sakamoto, Yusaku ^{[1
,2
]}

Saito, Keijiro ^{[3
]}

Hasegawa, Masakatsu ^{[3
]}

机构：

[1] Kyoto Univ, Kyoto, Japan

[2] TAKADA TAKAHASHI & PARTNERS, 12-22,Tsukiji 1 Chome,Chuo Ku, Tokyo 1040045, Japan

[3] Kyoto Univ, Dept Energy Sci & Technol, Yoshida Hon Machi,Sakyo Ku, Kyoto 6068501, Japan

来源：

ISIJ INTERNATIONAL | 2024年 / 64卷 / 06期

关键词：

nepheline syenite; phase diagram; FeO activity; reduction-oxidation reaction; CHEMICAL-POTENTIALS; SYSTEM; FEXO; FEO;

D O I：

10.2355/isijinternational.ISIJINT-2023-452

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Although fluorspar has been widely used as a flux for steelmaking slag, there is a strong incentive to explore alternatives. As one of the candidates for such substances, "nepheline syenite" has been investigated in terms of slag fluidity and lime dissolution rate. The present study aimed at clarifying the homogeneous liquid region and FexO activities in the CaO-FexO slags with nepheline syenite added at 1 673 K. When the molar ratio of nepheline syenite/CaO was below 0.658, the substitution of CaO with nepheline syenite raised the FexO activity as well as CaF2. The effect of the nepheline syenite addition on slag basicity was discussed by means of the reduction-oxidation reaction of Fe3+/Fe2+.

引用

页码：901 / 908

页数：8

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