The possibility of repair of metallurgical ladle lining

Abstract

Metallurgists have always dreamed of an “eternal ladle”, i.e., the possibility of repairing a metallurgical ladle without removing its old lining. However, the use of thick mixtures for this purpose is problematic, whereas thinner mixtures are prone to cracking under cooling. The author demonstrates that the reason for such cracking is the temperature contraction of the surface layer, which is the first to be cooled, as a consequence, a larger volume becomes enclosed in a shell of a smaller capacity, which leads to its cracking. A method is proposed for cooling the inner volume of lining to remove temperature stresses from the outer layers and prevent their cracking.