METHOD OF FIRING LIME-CONTAINING PRODUCTS AND MATERIALS Russian patent published in 1999 - IPC

FIELD: refractory materials. SUBSTANCE: method can be used for manufacturing hydration-resistant products and materials containing free lime and being appropriate for lining steel-pouring and intermediate ladles, converters, and electrical steel-smelting furnaces. Firing process is distinguished by that lime-containing products and materials are preheated to 600 C at partial water vapor pressure equal to or below 0.1 mm Hg, after which firing is conducted within a temperature range of 600 to 2000 C at CO and O₂ partial pressure at 0.3 and 0.001-0.3 atm, respectively. EFFECT: increased hydration resistance. 3 ex