Development of a Thermodynamic Database for Mold Flux and Application to the Continuous Casting Process

被引：37

作者：

Van Ende, Marie-Aline ^{[1
]}

Jung, In-Ho ^{[1
]}

机构：

[1] McGill Univ, Dept Min & Met Engn, Montreal, PQ H3A 0C5, Canada

来源：

ISIJ INTERNATIONAL | 2014年 / 54卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

continuous casting mold flux; thermodynamic database; equilibrium solidification behavior; kinetic model; steel/slag/inclusion reactions; QUASI-CHEMICAL MODEL; HIGH AL STEEL; CUSPIDINE 3CAO-CENTER-DOT-2SIO(2)CENTER-DOT-CAF2; PHASE-DIAGRAM; GIBBS ENERGY; OPTIMIZATION; SLAG; BEHAVIOR;

D O I：

10.2355/isijinternational.54.489

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A thermodynamic database for the oxyfluoride system CaO-MgO-Al2O3-SiO2-Na2O-K2O-Li2O-MnO-FeO-F has been developed based on the critical evaluation and optimization of all available experimental thermodynamic and phase diagram data. The developed database can be used for phase diagram and equilibrium solidification calculations for multicomponent systems. Such accurate database with high predictability capability assists in understanding the crystallization behavior of mold fluxes. In addition, a kinetic model was developed to simulate the interactions between the mold flux and molten steel using effective equilibrium reaction volumes combined with the thermodynamic database. The kinetic model successfully reproduced the significant Al2O3 accumulation observed when casting high Al steel with CaO-SiO2 based mold flux. Equilibrium solidification calculation performed on the Al2O3-rich mold slag revealed detrimental changes in the solidification temperature, the primary phase and the evolution of the liquid fraction with temperature.

引用

页码：489 / 495

页数：7

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