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Abstract

Bachelor thesis work addresses the calculation of the theoretical flame temperature in the oxidation area; the basic technology and blast furnace lining. Selected entering I solved by mathematical model, because the blast environment is very changeable and this method can quickly respond to changing conditions. The main source of thermal work hearth heat supply is molten iron and slag only (here not run oxidation reaction) and the heat loss takes place continuously and periodically lined hearth by tapping of hot metal and slag. Since the thermal state of the hearth at a relatively steady in time; lining heat loses are relatively stable. The work is focused on determining the heat supply to the hearth , depending on current technology and operating mode The aim is to eliminate temperature changes of individual technological modes so that the complex action of canceling each other out and was retained stabilized thermal state of the hearth. Based on calculation, I found that pulverized coal injecting slightly reduces the theoretical flame temperature. Another factor is moisture in the form of injected steam to the blowing wind significantly decreases the theoretical flame temperature and conversely increasing the oxygen content in the blast wind increases theoretical flame temperature. The main result is that the theoretical flame temperature is a complex quantity which is influenced by many factors. The most important include moisture content, the quantity of injected hydrocarbon fuels, and the degree of oxygen enrichment in the blast wind.