Enhanced corrosion resistance of MgO–C refractories containing sintered MgAl2O4 spinel powder under various slag basicities

IF 7.4 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Corrosion Science Pub Date : 2025-05-05 DOI:10.1016/j.corsci.2025.113009

Weijie Guo , Tianbin Zhu , Yuhang Zhang , Yawei Li , Xiaofeng Xu , Yajie Dai , Yibiao Xu , Wen Yan

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Abstract

Under the requirements of low-carbon metallurgy and high scrap ratio technology, enhancing the slag corrosion resistance of MgO–C refractories through cost-effective methods holds significant importance. Therefore, sintered spinel fine powder was used to partially replace the original fused magnesia fine powder in the refractory matrix, and the slag corrosion resistance against high-basicity and low-basicity slags was studied using the induction furnace corrosion test. The results showed that the addition of sintered spinel fine powder significantly enhanced the slag resistance of refractory matrix, especially against low-basicity slag. It also suppressed the propagation of the corroded area at the matrix, preventing complete destruction of the matrix and subsequent spalling of the aggregates caused by slag flow. Additionally, it inhibited the penetration of the slag into the refractory matrix and reduced the concentration of Fe^3 + in the slag. When 12 wt% of sintered spinel fine powder was used, the specimens exhibited the best slag corrosion resistance against both slags with different basicities.

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含烧结MgAl2O4尖晶石粉的MgO-C耐火材料在不同矿渣碱度下的耐腐蚀性增强

在低碳冶金和高废渣比技术的要求下，通过经济有效的方法提高镁碳耐火材料的抗渣腐蚀性能具有重要意义。因此，采用烧结尖晶石细粉部分替代耐火材料基体中原电熔氧化镁细粉，并采用感应炉腐蚀试验研究了对高碱度和低碱度炉渣的耐渣性。结果表明，烧结尖晶石细粉的加入显著提高了耐火材料基体的抗渣性能，尤其是抗低碱度渣性能。它还抑制了基体腐蚀区域的扩展，防止了由渣流引起的基体完全破坏和随后的集料剥落。抑制渣向耐火材料基体的渗透，降低渣中Fe3 +的浓度。当烧结尖晶石细粉的质量分数为12% wt%时，试样对两种碱度的渣均表现出最佳的耐渣性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Corrosion Science 工程技术-材料科学：综合

CiteScore

13.60

自引率

18.10%

发文量

763

审稿时长

46 days

期刊介绍： Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies. This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.