UNFIRED BRICK AND ITS PRODUCTION METHOD

摘要

PROBLEM TO BE SOLVED: To provide an unfired SN (sliding nozzle) plate brick high in strength at a temperature of 1,000°C or lower, excellent in volume stability at a high temperature and in resistances to oxidation, wear, corrosion and thermal spalling.;SOLUTION: The method for producing this unfired SN plate brick comprises kneading an alumina fine powder which is a base material of the brick by replacing a part thereof with a powdery pitch in an amount of 0.5-5.0 wt.%, or further by replacing with an easily sinterable alumina fine powder having a mean particle size of 1 μm or less in the amount of 1-15 wt.% in addition to the above condition.;COPYRIGHT: (C)2003,JPO