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—The distribution of the gas flow rates over the blast-furnace height is studied. The best blast-furnace gas dynamics is determined by the range of gas-flow rates in the batch column—in particular, at the tuyere exit and in the batch-free charging zone. The velocity of the blast and the blast-furnace gas may be used to assess the stability and optimality of the gas-dynamic conditions in smelting.
Data analysis has been performed concerning the limiting values of heat losses in the cooling system and consumption of coke to compensate for them in the blast furnaces, depending on their volume, technical condition, and smelting technology. It was shown that the consumption of coke to compensate for heat losses may vary from 10 to 55 kg of coke or more per ton of cast iron.
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