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<p>Alumina (Al<sub>2</sub>O<sub>3</sub>)–Magnesia (MgO)-carbon (C) refractories are widely used for various applications in steel making process, particularly in the side wall and bottom lining of steel ladle, bottom lining of hot metal de-sulphurisation (De-S) ladle, inner lining of submerged entry nozzle (SEN) and as ceramic foam filter in steel melt filtration.The advantage of in-situ MgAl<sub>2</sub>O<sub>4</sub> spinel formation associated with volume expansion in Al<sub>2</sub>O<sub>3</sub>-MgO-C (AMC) refractory strongly reduces the joint wear and erosion during use and makes it superior than MgO-C and Al<sub>2</sub>O<sub>3</sub>-C refractory. The AMC refractory also shows excellent thermo-mechanical properties and corrosion resistance. Raw materials, compositions and additives play key role in in-situ spinel formation in AMC refractory. This paper reviews the AMC refractory in-total with emphasis on raw materials and compositions for different applications and their effect on the refractory properties.</p>

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Al2O3-MgO-C Refractory for Iron & Steel Industry–An Overview

  • 期刊论文

  • 发表日期：

    2026年3月27日

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  • Arthita Bhattacharyya,
  • Soumyajit Roy,
  • Ritwik Sarkar

摘要

Alumina (Al2O3)–Magnesia (MgO)-carbon (C) refractories are widely used for various applications in steel making process, particularly in the side wall and bottom lining of steel ladle, bottom lining of hot metal de-sulphurisation (De-S) ladle, inner lining of submerged entry nozzle (SEN) and as ceramic foam filter in steel melt filtration.The advantage of in-situ MgAl2O4 spinel formation associated with volume expansion in Al2O3-MgO-C (AMC) refractory strongly reduces the joint wear and erosion during use and makes it superior than MgO-C and Al2O3-C refractory. The AMC refractory also shows excellent thermo-mechanical properties and corrosion resistance. Raw materials, compositions and additives play key role in in-situ spinel formation in AMC refractory. This paper reviews the AMC refractory in-total with emphasis on raw materials and compositions for different applications and their effect on the refractory properties.