Status and Development of Refractory Materials for Blast Furnace Inner Lining

doi:10.19691/j.cnki.1004-4493.2025.03.006

China's Refractories ›› 2025, Vol. 34 ›› Issue (3): 36-42.DOI: 10.19691/j.cnki.1004-4493.2025.03.006

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Status and Development of Refractory Materials for Blast Furnace Inner Lining

SUN Saiyang, MA Xiaoqing, ZHANG Ronghui^*, CHENG Minghui

Beijing Allied Rongda Engineering Material Co., Ltd., Beijing 101400, China

Online:2025-09-15 Published:2025-09-24
Contact: ^*e-mail: perry@rongda.com.cn
About author:Sun Saiyang, graduated from Beijing University of Science and Technology with a master’s degree in metallurgical engineering. Now he works in Beijing Allied Rongda Engineering Material Co., Ltd. , engaged in monolithic refractories and technical support of monolithic refractories for ironmaking. As the technical director, he presided over the maintenance project of large blast furnace hearths and linings, and served large domestic iron and steel enterprises. Recently, he is mainly engaged in the research and development of silica sol-boonded monolithic refractories, including improving the cold strength, hot performance and corrosion resistance, and improving the service life of blast furnace linings.

Abstract

Abstract: The lining materials for blast furnaces have evolved from brick masonry to monolithic refractory materials. Monolithic castables are widely used in various industrial furnaces. The rapid development of silica sol materials, combined with the commonly used construction methods of casting and spraying, offers greater flexibility, efficiency, environmental friendliness, and a longer lifespan. Typical monolithic refractory technologies, such as the integral casting technique for the furnace hearth, the pre-applied slag coating technique for the furnace belly and waist, and the inner lining gunning technique, are grounded in scientific theory and practice, thereby advancing the development of refractory materials and enhancing the operational quality of blast furnaces.

Key words: blast furnace lining, bricklaying, casting, spraying, silica sol, science and longevity

SUN Saiyang, MA Xiaoqing, ZHANG Ronghui, CHENG Minghui. Status and Development of Refractory Materials for Blast Furnace Inner Lining[J]. China's Refractories, 2025, 34(3): 36-42.

References

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Status and Development of Refractory Materials for Blast Furnace Inner Lining

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