Hot Repair Mix for the hearth of DC-electric arc furnace

摘要

PURPOSE: Hot repairing materials for repairing the bottoms of DC furnace's are provided, which has electric conductivity, good transportation and storage, short time application and strong adhesion. CONSTITUTION: The hot repairing materials contain 85-92wt.% of magnesia clinker, 8-15wt.% of power type pitch and phenol resin as carbon materials, and 1-3pts.wt.(based on 100pts.wt. of raw materials) of liquid phenol resin as a moisturizer for easy production and storage. The pitch powder has a softening temperature of 105-125deg.C and size of less than 1mm.