THE EFFECT OF MATRIX OF DOWNLOAD ON HEAT LOADS OF THE COOLING SYSTEM OF THE BLAST FURNACES EQUIPPED WITH THE COMPACT BELL-LESS CHARGING DEVICE OF A GUTTER TYPE
The effect of matrix of download on the magnitude of the thermal loads of the cooling system of the blast furnaces number 4, 9 and 10 of OJSC "Magnitogorsk Iron & Steel Works", equipped with the compact bell-less charging device of a gutter type was investigated. During the analyzed periods lasting from 146 to 636 days the proportion of iron ore material and coke entering the station of the angular position of the tray № 9-11 of matrix of download was in the range from 24.0% to 57.2% and from 0% to 7% of their consumption respectively. As a result, we have found that a decrease in the proportion of the ore part of the charge in the peripheral zone of the furnace at 1% from its consumption was accompanied by a decrease of the average temperature of the refrigerators of the shaft by 1.1°C.