BASIC UNSHAPED REFRACTORY MATERIAL FOR REPAIRING STEELMAKING CONTAINER

摘要

PURPOSE: A basic unshaped refractory material for repairing a steelmaking container is provided to prevent dust generation under construction, to improve contents with forming a strong sintered body by promoting initial sinter to prevent falling off in removing slag and to provide excellent dismantlement and storage properties. The basic unshaped refractory material contains basic refractory aggregate having dolomite, magnesia and chrome with adding liquid binder. CONSTITUTION: A basic unshaped refractory material for repairing a steelmaking container comprises 10-40 wt.% of basic refractory aggregate having 40-60 wt.% of dolomite, 10-40 wt.% of magnesia and chrome in 100 wt.% of refractory aggregate, and liquid binder is added. Dolomite is dolomite ore having less than 5mm of a particle diameter decomposed at 700-800C. Magnesia is basic waste-refractory material having less than 3mm of a particle diameter while/after manufacturing bricks. Chrome is basic waste-refractory material having less than 5mm of a particle while/after manufacturing bricks. The amount of the liquid binder is 5-7 wt.%.