NITRIDE CAPACITY OF CAO-AL2O3 MELTS

被引：22

作者：

TOMIOKA, K

SUITO, H

机构：

[1] Tohoku University, Katahira, Aobaku, Sendai, Miyagi-ken

[2] Research Institute of Mineral Dressing and Metallurgy, Tohoku University, Katahira, Aobaku, Sendai, Miyagi-ken

来源：

ISIJ INTERNATIONAL | 1991年 / 31卷 / 11期

关键词：

STEELMAKING; DENITRIZATION; NITRIDE CAPACITY; GAS-SLAG EQUILIBRIUM; CAO-AL2O3; SYSTEM; ZRO2 SOLID ELECTROLYTE;

D O I：

10.2355/isijinternational.31.1316

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The nitride capacities (CN3- = (%N).PO2(3/4)/PN2(1/2)) in CaO-Al2O3 melts were measured by a gas-slag equilibration technique, using CaO, Al2O3, and Mo crucibles in the temperature range of 1 723 to 1 923 K. The oxygen partial pressures measured by a solid electrolyte cell were controlled by N2-H-2-H2O gas mixtures. It was found that the nitride capacities increased with increasing temperature and Al2O3 content in the slag. Activity coefficients of AIN calculated from the reported activities of Al2O3 increased with a decrease of Al2O3 content and temperature.

引用

页码：1316 / 1321

页数：6

共 19 条

[1]

Elliott J.F., 1963, THERMOCHEMISTRY STEE, V2, P620

[2]

FRUEHAN RJ, 1970, METALL TRANS, V1, P3403

[3] ASSESSMENT OF THE CAO-AL2O3 SYSTEM [J].