DISPOSAL METHOD FOR WASTE BRICK FROM METAL MELTING FURNACE

摘要

PURPOSE: To crush waste brick from a metal melting furnace simply to a small particle size by crushing the brick which is brought into contact with steam of specified pressure or more. ;CONSTITUTION: Base resisting refractory brick used in a metal melting furnace contains MgO and/or CaO as main components, and magnesium chloride brick and magnesia brick are used more preferably. Since MgO and CaO are reactive in a hydration reaction with water, waste brick from the furnace is brought into contact with steam of 2atm or more to be crushed. The temperature of steam is preferably 100-310°C and more preferably 150-250°C. The temperatures are reduced into saturated steam pressure to be 1.0-100atm. and more preferably 4.9-40atm. The treatment with steam is preferably carried out in an autoclave. The crushed waste brick is preferably melted in a copper melting furnace.;COPYRIGHT: (C)1996,JPO