Method for selecting flank side wall bricks for LF treatment, lf treatment method for molten steel, and ladle ladle for LF treatment

摘要

Problem to be solved: to suppress the corrosion of the side wall bricks in the LF treatment ladle, and to suppress the corrosion of the magnesia carbon brick which is lined in the slagline portion.Carbon content greater than 10% by massMagnesia carbon brick containing 80 mass% or more of magnesiaAfter firing for more than 3 hours at 1600 ℃ in a reducing atmosphere, a compressive stress of 1 \/ 3 of the compressive strength is applied.The process of selecting the brace after the unloading is less than 0.5% and5% or more carbonCarbon containing bricks containing 80% by mass or more of refractory materialThe process of selecting the temperature in the temperature range of 1400 degrees Celsius to 1600 ° C. or less after firing at a temperature of 1600 ° C. for 3 hours or more after loading the compressive stress ofThere is provided a method of selecting the bricks on the side wall of the molten steel ladle for LF treatment.Diagram