Fundamental investigations on the high temperature corrosion of ZrSiO4-containing andalusite refractories in cement kiln preheater

被引：10

作者：

Madej, Dominika ^{[1
]}

Szczerba, Jacek ^{[1
]}

机构：

[1] AGH Univ Sci & Technol, Fac Mat Sci & Ceram, Dept Ceram & Refractories, PL-30059 Krakow, Poland

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2016年 / 36卷 / 03期

关键词：

Refractories; Andalusite; Zircon; Corrosion model; XRD and SEM/EDS analysis; CRYSTAL-STRUCTURE; ATTACK;

D O I：

10.1016/j.jeurceramsoc.2015.10.049

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：

ZrSiO4-containing andalusite brick after service in cement kiln preheater was analysed by means of XRF, XRD and SEM/EDS techniques in order to determine the corrosion mechanism during 8-months industrial-scale corrosion test in high-alkaline environment at 1100 C. The detailed investigation of the wear mechanism through "post-mortem studies" of the ZrSiO4-containing andalusite brick showed that the K-aluminosilicate phases were formed along with a liquid phase as a consequence of reactions between potassium and andalusite. Ca-aluminosilicate and CaZrO3 phases were also formed. In this paper, a new model of the refractory corrosion was proposed. In modelling the corrosion of zircon-containing andalusite refractory material, ZrSiO4 and Al2SiO5 single grains were used to represent the refractory, so that in all cases the isothermal sections of CaO-Al2O3-SiO2, K2O-Al2O3-SiO2 and CaO-ZrO2-SiO2 systems at 1100 degrees C were used to identify the equilibrium phases and also to explain the mechanism of corrosion. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：875 / 883

页数：9

共 16 条

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