Authors: Mukund Kumar, Assistant Professor Dr. Neetesh Kumar Dehariya
Abstract: High alumina bricks are among the most important refractory materials used in high-temperature industries due to their excellent thermal stability, high refractoriness, mechanical strength, and resistance to chemical attack. This review presents a comprehensive overview of high alumina brick manufacturing, including the selection of raw materials such as bauxite, calcined alumina, and kaolin, along with processing techniques involving crushing, mixing, shaping, drying, and high-temperature sintering. The paper discusses the physical, chemical, and thermo-mechanical properties that determine brick performance in industrial applications. Major application areas, including iron and steel, cement, glass, non-ferrous metallurgy, petrochemicals, and power generation, are examined with emphasis on service conditions and material requirements. Common failure mechanisms, such as thermal shock, slag corrosion, chemical attack, spalling, structural cracking, and improper installation, are analyzed to identify their root causes and preventive measures. Furthermore, the review evaluates the Indian refractory market by examining production capacity, demand trends, key manufacturers, import-export dynamics, technological developments, and future growth opportunities driven by infrastructure expansion and industrialization. The study highlights current challenges related to raw material availability, energy consumption, environmental sustainability, and quality control while outlining strategies to improve manufacturing efficiency and product performance. Overall, this review provides valuable insights for researchers, manufacturers, and end users seeking to enhance the reliability, competitiveness, and sustainable development of the high alumina brick industry in India.
