| 摘要 |
FIELD: ferrous metallurgy. SUBSTANCE: to maintain constant maximum temperature of flame during all the period between reversal in the method of heating cold-charged furnace including heating air in regenerator charges, feeding fuel, heated air, and process oxygen into furnace working space, periodically changing feeding energy-carriers and removing flue gas from furnace, intakes of process oxygen and heated air are controlled in dependence of regenerator charge temperature and determined from the following equations:,, whereis process oxygen intake, cu.m/h;minimum process oxygen intake, cu. m/h; Vheated air intake, cu.m/h; Vmaximum heated air intake, cu. m/h; a is a coefficient taking into account interrelation between oxygen intake and fuel combustion temperature and, for natural gas and mazut, being equal to 7.5 cu. m/s. C, Ois oxygen content in process oxygen, %; tmaximum regenerator charge temperature, C; and tcurrent regenerator charge temperature, C. EFFECT: reduced casting duration and fuel consumption. |
