... Magnesite Aluminia Spinel for Fire Brick Fused magnesium aluminum spinel is produced by mixing the industrial alumina with the high-purity caustic-burned magnesia ... furnace, as the ideal material for manufacturing cast sliding plate, nozzle bricks, ladle bricks and open hearth furnace bricks, as well as the basic ... large order 40%T/T, 60%L/C. We couldn’t accept L/C for a small order. The best way of ...