PROCESSING METHOD OF IRON-CONTAINING MATERIALS IN TWO-ZONE FURNACE Russian patent published in 2015 - IPC C22B19/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to a method of pyrometallurgical processing of iron-containing materials, which involves loading to a melting zone of a two-zone furnace of iron-containing materials, fluxing additives and carbon-containing materials, their melting in an iron-containing melt bubbled with oxygen-containing air, afterburning of combustible gases leaving the melt with further supply of the melt to a reducing zone, to which carbon-containing materials and other charge materials are loaded; reduction of iron with formation of iron-carbon melt and slag; afterburning of combustible gases leaving the bath of the reduction zone; separate tapping of melting products. Gases leaving reduction and melting zones are cooled down and cleaned separately; with that, cleaned gases of the melting zone are removed to an exhaust pipe, and exhaust gases of the reduction zone after cooling and cleaning are compressed and supplied to tuyeres of the lower row of the melting zone.

EFFECT: reduction of specific consumption of energy sources.

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