AN ALTERNATIVE GIBBS-DUHEM METHOD FOR THE CALCULATION OF ACTIVITIES FROM THE REDOX DATA FOR IRON-OXIDE IN TERNARY OXIDE SYSTEMS

被引：2
|
作者：
SUN, S
JAHANSHAHI, S
机构：
[1] CSIRO Division of Mineral and Process Engineering, G.K.Williams Cooperative Research Centre, Rosebank MDC, 3169, Clayton Vic.
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/BF02665210
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An alternative approach is presented in this article for the calculation of the activity of FeO, Fe2O3, and the other component in ternary oxide slags when the redox behavior of iron oxides is known. The approach avoids the use of the ''tangent intercepts'' to the iso-oxygen activity curves as required in Schuhmann's method. Favorable comparisons were obtained for the systems of FeO-Fe2O3-CaO and FeO-Fe2O3-SiO2 between the isoactivity curves derived using this method and those established in previous work using Schuhmann's method. Direct calculation of the free energy of mixing from the redox data is also possible. An example is given for the FeO-Fe2O3-CaO system.
引用
收藏
页码：277 / 280
页数：4
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