What is the cause of the lining erosion?

(1) The role of high temperature heat flow. The high temperature action from the liquid metal and slag, especially in the primary reaction zone, may soften and melt the surface of the lining.

(2) The role of quenching and rapid heat. The lining is subjected to rapid cooling and rapid heat, which reduces the high temperature strength of the lining.

(3) Mechanical damage. The movement of liquid and solid in the furnace and the collision of large scrap during feeding will accelerate the damage of the lining.

(4) Chemical attack. Mainly from furnace gas and slag.