Thermodynamic simulation models for predicting Al2O3-MgO castable chemical corrosion

被引：22

作者：

Luz, A. P. ^{[1
]}

Braulio, M. A. L. ^{[1
]}

Tomba Martinez, A. G. ^{[2
]}

Pandolfelli, V. C. ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Mat Engn, BR-13565905 Sao Carlos, SP, Brazil

[2] Mat Sci & Technol Res Inst INTEMA, Div Ceram, RA-7600 Mar Del Plata, Buenos Aires, Argentina

来源：

CERAMICS INTERNATIONAL | 2011年 / 37卷 / 08期

基金：

巴西圣保罗研究基金会;

关键词：

Corrosion; Spinel containing castables; Thermodynamic simulation; Spinel; HIGH-ALUMINA; SLAG; REFRACTORIES; DISSOLUTION;

D O I：

10.1016/j.ceramint.2011.05.049

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The chemical corrosion of two Al2O3-MgO castables (containing distinct binder sources: hydratable alumina or calcium aluminate cement) were evaluated in this work via thermodynamic calculations. Two simulation models were proposed according to the following procedures: (1) firstly the matrix and later the aggregates of the castables were placed, separately, in contact with an industrial basic slag, and (2) the overall chemical composition of the design castables was directly reacted with the molten slag. The theoretical results were further compared with experimental data collected after corrosion cup tests. Although the thermodynamic evaluation of the overall castable compositions was able to identify the phase transformations correctly, a two-step analysis of the matrix components and aggregates particles seems to be the best alternative to evaluate the binder source effect on the corrosion performance of the two Al2O3-MgO refractory materials. (C) 2011 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：3109 / 3116

页数：8

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