PROCESS FOR THE PREPARATION OF REFRACTORIES BRICK OF MAGNESIA - CROMIA

摘要

The present invention is about magnesia-chromia burnt firebrick as built-in refractories using in vacuum degassing equipment as refining chamber to degas, electric furnace, and cement rotary kiln.Magnesia-chromia burnt firebrick was manufactured by adding mixture of alumina powder and zirconia powder of which ratio was 3:2 by molar and particle size was 1.0mm below 1-15 weight% by extrapolation in fire proofing materials comprised magnesia and chromia.