The invention provides a method for calculating the blast
momentum in a
blast furnace production process, wherein the real-time blast
momentum in the
blast furnace production process is calculated according to the controllable operation parameters of blast furnaces with different converter capacities during the
daily production process, and the controllable operation parameters comprise the coefficient, the
blast furnace blast volume GFL, the rich
oxygen content FYL in the blast, the blast
humidity GFSF, the hot
air temperature RFWD, the blast pressure GFYL, the working air port number FKGS, the
nitrogen density k1, the
oxygen density k2, the gravity acceleration k3, the
water vapor density, the
Kelvin temperature k5 at the temperature of 0 DEG C, and the
atmospheric pressure k6 under thestandard state. According to the present invention, with the method, the reasonable blast
momentum can be onlinely and real-timely controlled during the blast furnace production, such that the reasonable daily blast furnace production operation is performed from the formation and control angle of the reasonable
coal gas flow inside the furnace
hearth so as to ensure the long service life of the blast furnace and the low consumption, stability and smooth operation of the production.