FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy and can be used for production of steel. Complex is made with a blast furnace for production of cast iron, a converter steel-making plant for production of crude steel, a gas pipeline system for gases released during production of iron and/or during production of crude steel, and with electric power generation plant. Power plant is operated by means of gas containing at least a portion of the mixture released during production of blast-furnace gas and/or a portion of the mixture of released converter gas. There is a chemical or biotechnological plant connected to the gas pipeline system and connected to the gas supply in parallel to the power plant. Gas-line system includes gas switch for control of gas flows supplied to power station and to chemical or biotechnological unit during operation.
EFFECT: higher efficiency of steel production.
27 cl, 3 dwg
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