METHOD OF PREPARING BLOWING-IN BLAST FURNACE Russian patent published in 1997 - IPC

FIELD: ferrous metallurgy. SUBSTANCE: method includes emptying blast furnace below cast iron notch axis, drying and cooling dried lining, calculation and loading first-blow charge. According to invention, before drying, on surface of lining along hearth perimeter, titanium-containing materials are placed, their amount being found from the relationship: C = (10-20) x F where C is titanium usage, kg, and F hearth cross- section area, sq.m. EFFECT: increased service life of hearth lining caused by deposition of titanium carbide and nitride on it.