Enhancement of Intermediate-Temperature Strength of Corundum-Spinel Castables via Incorporation of Zn(OH)2 Powders

• Published in: Materials Vol. 18; no. 12; p. 2777
• Main Authors: Dong, Yifan, He, Mantang, Sang, Mengyang, Qiu, Xin, Xu, Pengyu, Liu, Xinhong, Jia, Quanli
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 12.06.2025; MDPI
• Subjects: Aggregates; Alumina; Aluminum oxide; Blowing rate; Cold; Cold pressing; Cold strength; Cooling; Corundum; Decomposition reactions; Energy consumption; High temperature; Iron and steel industry; Ladle metallurgy; Mechanical properties; Metal hydroxides; Physical properties; Plugs; Purging; Ratios; Service life; Sintering (powder metallurgy); Spalling; Spinel; Temperature; Zinc oxide; China; Shanghai China; Zn(OH)2; purging plug; corundum-spinel castables; intermediate-temperature strength

Corundum-spinel based purging plugs are extensively employed in steel ladle refining processes. Traditionally, these plugs are manufactured through a high-temperature firing process that not only demanded substantial energy consumption but also resulted in a dense microstructure with higher strength...