Effect of Slag Basicity on Alumina Dissolution and Diffusivity:A High-temperature Confocal Laser Scanning Microscopy Study

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外文摘要：Alumina is one of the crucial and extensively utilized refractory components.As the refractory wear due to dissolution at elevated temperatures during operation is a major threat to refractory lifespan,quantifying dissolution is important for developing cost-effective and resource-efficient refractories.This study investigated the dissolution of alumina particles in two silicate and one calcium aluminate slags at 1 450,1 500,and 1 550 ℃ using high-temperature confocal laser scanning microscopy(HT-CLSM).Dissolution was quantified in terms of diffusivity,with all influencing factors,including Stefan flow and bath movement,incorporated into the determination process.The trends observed in total dissolution time and diffusivity in three slags at three experimental temperatures could not be explained solely on the basis of slag basicity.Two parameters,considering the influencing factors,were introduced to explain these trends.Furthermore,the linear trend observed in Arrhenius plots of diffusivities supports the diffusivity results.Additionally,good agreement between the diffusivities of alumina in one silicate slag obtained via CLSM and rotating finger test investigations verified the reliability of the results.

外文关键词：

aluminadissolutiondiffusivitycorrosionrefractory

作者：

Burhanuddin、Harald HARMUTH

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作者单位：

Montanuniversität Leoben,Leoben 8700,Austria

基金：

COMET program within the K2 CenterIntegrated Computational Material,Process and Product Engineering(IC-MPPE)Austrian Federal Ministries for Transport,Innovation,and Technology(BMVIT)Digital and Economic Affairs(BMDW)represented by the Austrian Research Funding Association(FFG)federal states of Styria,Upper Austria,and Tyrol

项目编号：

Project 859480

出版年：

2024

DOI：

10.19691/j.cnki.1004-4493.2024.02.005

中国耐火材料(英文版)

洛阳耐火材料研究院

中国耐火材料(英文版)

影响因子：0.026

ISSN：1004-4493

年,卷(期)：2024.33(2)