THERMODYNAMICS OF O, N, AND S IN LIQUID FE EQUILIBRATED WITH CAO-AL2O3-MGO SLAGS

被引：40
作者：
INOUE, R
SUITO, H
机构：
[1] Institute for Advanced Materials Processing, Tohoku University, Sendai
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 1994年 / 25卷 / 02期
关键词：
D O I：
10.1007/BF02665206
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nitrogen and S distribution ratios between CaO-Al2O3-MgO slags and liquid Fe were measured at 1873 K as a function of Al (or Mg, Ca) content in metal, using CaO, MgO, and Al2O3 crucibles. Based on the results for the solubility product of MgO, the equilibrium constant, K(Mg), for the reaction MgO = Mg underbar + O underbar and the first-order interaction parameter, e(O)Mg (e(Mg)O, were estimated to be log K(Mg) = 7.8 +/- 0.2 and e(O)Mg = -190 +/- 60 (e(Mg)O = -290 +/- 90), respectively. The activities of Al2O3 at the slag compositions double-saturated with CaO/MgO, MgO/MgO.Al2O3, and MgO.Al2O3/CaO.2Al2O3 components were obtained from the S distribution ratios between slag and metal, coupled with the reported values of sulfide capacities. Nitride capacities were also estimated from the N distribution ratios and the activities of Al2O3.
引用
收藏
页码：235 / 244
页数：10
相关论文
共 23 条
[11]  
KOR GJW, 1990, ELLIOTT S P, P479
[12]  
Kubaschewski O., 1972, High Temperatures - High Pressures, V4, P1
[13]  
Kulikov I. S., 1985, IZV AKAD NAUK SSSR M, P9
[14]  
NADIF M, 1977, 5TH PROC TECHN P IIS, V51, P490
[15]   THERMODYNAMICS OF NOZZLE BLOCKAGE IN CONTINUOUS-CASTING OF CALCIUM-CONTAINING STEELS [J].
PIELET, HM ;
BHATTACHARYA, D .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1984, 15 (03) :547-562
[16]  
REIN RH, 1965, T METALL SOC AIME, V233, P415
[17]  
Sigworth G. K., 1974, Metal Science, V8, P298
[18]   ALUMINUM OXYGEN EQUILIBRIUM BETWEEN CAO-AL2O3 MELTS AND LIQUID-IRON [J].
SUITO, H ;
INOUE, H ;
INOUE, R .
ISIJ INTERNATIONAL, 1991, 31 (12) :1381-1388
[19]   THERMODYNAMICS OF OXYGEN AND NITROGEN IN LIQUID-IRON EQUILIBRATED WITH CAO-SIO2-AL2O3 SLAGS [J].
TAMURA, F ;
SUITO, H .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1993, 24 (01) :121-130
[20]   THERMODYNAMICS OF NITROGEN IN BAO-TIOX MELTS [J].
TOMIOKA, K ;
SUITO, H .
METALLURGICAL TRANSACTIONS B-PROCESS METALLURGY, 1993, 24 (01) :131-138
123