Shvachka O. Increase of efficiency of fuel use in the blast furnace on the basis of a choice of rational parameters of the blow, taking into account the heat loss

Blast furnace useful volume of 2000-5000 m3 blast and equipment supply. The development of thermal power blast furnace model and the development of a method of search of rational modes of the furnace, providing the extremes of its basic parameters in the parameter of thermal work, the use of the information on external heat loss to control the thermal state of the oven. Methods of system analysis, mathematical statistics, decision-making under uncertainty and multiobjective environments, the theory of phase space, instrumental studies at the existing kilns and heuristic techniques. Heat Energy has continued to develop a model of blast furnace smelting ID Semikina taking into account non-linear processes of instrumental measurements of the external heat loss and stabilize the parameters of the blast. A new method for evaluating the thermal state of the blast furnace (heating, cooling, normal speed) at joint consideration of information about heat losses of the working space and consumption of coke on their compensation. For the first time proposed a method of analysis based on blast furnace reducing the impact of the uncertainty of the initial information on external heat loss in water cooling system. It was further developed method for determining the area of trade-offs for indicators such as productivity, specific coke consumption, specific consumption of equivalent fuel. Experience adapting methods: payoff matrix - to reduce the impact of the uncertainty of the initial information, the phase space - for the monitoring of gas-dynamic regime of the blast furnace, vector optimization - to search for compromise performance smelting. Expediency control heat loss in the cooling system and the consumption of coke in their coverage groups blast furnace plant to assess the effectiveness and reduce the coke consumption of equivalent fuel for smelting iron, safe operation and service life of the fence. Scientific position checked and confirmed during the pilot tests at the dispatch center №9 of PJSC "ArcelorMittal Kryviy Rih". The expected economic impact, taking into account the equity of the author amounted to 870 thousand. UAH / year in 2015 prices. Metallurgy.