Optimization of technological parameters agglomerate sintering with the solid fuel of different reactivities

Various frit layer levels receive different amounts of heat (the upper lacking up to 50%, and the lower receives 70% of excess heat), which results in the deterioration of the metallurgical characteristics of the entire layer of agglomerate and height-ened specific consumption of solid fuel. A number of researches and tests have been tried to solve this problem. Thus changes in technology and the charging device have been made in order to increase the amount of solid fuel in the upper layer, gas pulsing supply and combustion in the gas layer were tested, the effect of size and reactivity of the solid fuel on the process were studied. The obtained results make it possible for us to to conclude that not all the options of two-layer sintering charge have been used. At a pilot plant of ?aglopan? type studies have been conducted to study sintering conditions of bilayer batches with different reactivity and the amount of solid fuel in the upper and lower layers of the charge to be sintered. All predetermined amount of fuel with the same average reactivity (CRI = 36,7%) was introduced into the basic charge. Up to 30% of the required amount of carbon as a highly reactive (CRI > 37%) solid fuel was put into the experimental charge, then the amount of carbon by 5-15% more than it is required was injected into the top layer than it’s required as a highly reactive fuel, and - 10-20%carbon amount less than it is required as a low reactive fuel was injected into the lower layer. The proposed and tested technology makes it possible to improve specific efficiency of aglopan, to reduce the specific carbon consumption in solid fuels, to reduce the residual carbon in the agglomerate and to improve the strength characteristics of the agglomerate