The product boasts fundamental properties and key features such as high strength, high-temperature resistance, high hardness, corrosion resistance, oxidation resistance, resistance to extreme cold and rapid heat, excellent thermal shock resistance, good thermal conductivity, and high thermal efficiency. It is particularly suitable for long-term use in harsh environments, including high temperatures, high abrasion, highly acidic or alkaline atmospheres, and strong airflow erosion. This addresses issues such as the deformation and detachment of heat-resistant steel inner cylinders, short service life, and frequent shutdowns for replacements in the severe conditions of preheaters. The successful development of the ceramic inner cylinder represents a technological breakthrough and revolution in the field of preheater inner cylinders, introducing new materials and technologies internationally in the cement industry, where ceramic inner cylinders replace heat-resistant steel inner cylinders.