METHOD OF MANUFACTURING CHROMO-ALUMINO-ZIRCONIUM REFRACTORY MATERIALS Russian patent published in 2003 - IPC

FIELD: refractory materials. SUBSTANCE: in the first stage, solid solution of chromium oxide with titanium oxide is prepared by heat treatment at 1650-1700 C and ground to particle size 0.1-0.2 mm. Simultaneously, "Bakor" scrap is fractioned to give grit with particle size 0.65-3.5 mm and complex binder is prepared by combining orthophosphoric acid and with carbon-containing additive. Bakor grit is further mixed with a part of binder, and chromium oxide/titanium oxide solid solution powder is portionwise added at constant stirring, after which the rest of calculated amount of complex binder is added. Resulting mixture containing 60-80% Bakor grid and 20-40% chromium oxide/titanium oxide solid solution (8- 10% above 100%) is molded, dried, subjected to heat treatment at 1600+/-50 C under controllable atmosphere, and dried. Refractory products can be used as lining for glass manufacturing furnaces. EFFECT: increased temperature and corrosion resistance. 2 tbl