A unburned Magnesia-Carbon brick having excellent thermal shock resistance

摘要

PURPOSE: Provided are non-calcined magnesia carbon-based fire bricks used as refractories of iron making and steel making facilities, which are excellent in heat impact resistance by using thin film type graphite. CONSTITUTION: The non-calcined magnesia carbon-based fire bricks comprise a main material comprising 0.5-25w% of the thin-film type graphite with less than 1mm and the balance of a magnesia aggregate and 0.5-5pts.wt.(based on the main material of 100pts.wt.) of a phenol binder, wherein the thin-film type graphite has a specific surface area of 10-30mm¬2/g.