EFFECT OF VARIOUS FACTORS ON SMOOTH FLOW OF CHARGE MATERIALS BY SIZE FROM THE HOPPER CHUTE TYPE BLT
Physical modeling in a laboratory bell-less charging device tray type investigated the effect of the location of additional materials in the sinter layer and the proportion of pellets to measure the uniformity which characterizes the magnitude of the charge uniformity of particle size and uniformity of its distribution in the process of receipt of iron ore out of the bunker on the BLT tray. The most favorable conditions for the reduction of gas-dynamic tension at the top of the furnace provided the loading of pellets together with additional materials in the sinter layer. Rational fraction of agglomerate, located under the additives depends on the content in the charge of pellets. When the content of the pellets in the charge of 30% of the iron part of the highest homogeneity of the accommodation provided at the bottom of the charge hopper 55% of sinter, pellets and then, further loading of the remaining 45% of the agglomerate. The maximum value of the index of uniformity was 0.87, which is 4% higher than the one of the operating modes load charge materials in the blast furnaces of OJSC "MMK", equipped with a compact BSC tray type. Increasing the content of the pellets in the charge of 10 to 50% accompanied by an increase indicator of the uniformity of the particle size of the charge by 6.3%, due to increase in its uniformity of 7.4% in the conditions of reduction of uniformity of distribution uniformity on the issue of the course by 1%.