BOF refractory repair materials and Ten-ro refractory repair method

摘要

PROBLEM TO BE SOLVED: To provide a method for repairing refractory in a converter, using material for repairing refractory in a converter having excellent sticking property to refractory in a converter and capable of improving the repairing efficiency.;SOLUTION: Slag is made to remain in the converter 1 after tapping off blown molten steel, and a slag adjusting agent 5 containing MgO is added to the remaining slag 4, and the material for repairing refractory in the converter 6 obtained by adding the slag adjusting agent 5 to the slag 4 is adjusted so as to obtain the composition composed of, by wt.%, 10%-30% MgO, 10%-30% CaO, 5%-60% Cr₂O₃, and the refractory in the converter 3 is repaired by making this material for repairing refractory in the converter 6 stand still and by solidifying it at the damaged portion 7 of the refractory in the converter 3.;COPYRIGHT: (C)2009,JPO&INPIT