DEOXIDATION EQUILIBRIUM OF LIQUID-IRON WITH BARIUM

被引：0

作者：

KATO, S ^{[1
]}

IGUCHI, Y ^{[1
]}

BANYA, S ^{[1
]}

机构：

[1] TOHOKU UNIV,GRAD SCH,FAC ENGN,AOBA KU,SENDAI,MIYAGI 980,JAPAN

来源：

TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN | 1992年 / 78卷 / 02期

关键词：

DEOXIDATION; DEOXIDATION EQUILIBRIUM; LIQUID IRON; OXYGEN; BARIUM;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Deoxidation of liquid iron with barium was studied in the temperature range from 1 600 to 1 700-degrees-C. Barium and oxygen dissolved in liquid iron were brought into equilibrium in presence of pure barium oxide in the lime crucible under the inert gas atmosphere of argon. The equilibrium constant and standard free energy of the deoxidation reaction "BaO(s) = Ba(%) \ O(%)" were obtained as follows: log K- -9 980/T-1.82 (+/- 0.11) DELTA-G" = 191 000 + 34.9T (J) (+/- 4 kJ) The temperature dependences of the interaction parameters were expressed by the following equations: e(O)Bu = 27.1 - 1.48 x 10(5)/T c(Ba)O = 233 - 1.27 x 10(6)/T The standard free energy of solution of barium in liquid iron and the activity coefficient of barium in the infinite dilute liquid iron solution refered to pure barium (gamma(Ba)-degrees) were calculated and discussed.

引用

页码：253 / 259

页数：7