FIELD: metallurgy.
SUBSTANCE: invention relates to ferrous metallurgy, namely, to the method to produce substitute gas during recovery of material containing ferric oxide and a device for its realisation. Spent gas produced in recovery is removed and exposed to treatment from CO2, in which the residual gas containing CO2 is removed. Residual gas for levelling of oscillations of quantity and calorific capacity is temporarily stored in a gas depot, mixed with oxygen-containing gas, in particular, with pure oxygen, in a burner system, and is burnt to produce substitute gas. Substitute gas after dehydration is used as substitute of inert gas, in particular, nitrogen.
EFFECT: reduced emissions to environment.
21 cl, 4 dwg
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