Method for operating a smelting furnace installation

A method for operating a smelting furnace installation, in particular a blast furnace installation, the method comprising - feeding coke, iron oxide containing material and if required fluxing agents to the top of the smelting furnace, - injecting a first reducing gas containing hydrogen at a tuyere...

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Bibliographische Detailangaben
Hauptverfasser:	DIDELON Fernand, DELIKONSTANTIS Evangelos, JI Jihong, BANIASADI Mehdi, KINZEL Klaus Peter
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CHEMISTRY FURNACES FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL HEATING KILNS LIGHTING MANUFACTURE OF IRON OR STEEL MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON OPEN SINTERING OR LIKE APPARATUS OVENS RETORTS WEAPONS
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Beschreibung
Zusammenfassung:	A method for operating a smelting furnace installation, in particular a blast furnace installation, the method comprising - feeding coke, iron oxide containing material and if required fluxing agents to the top of the smelting furnace, - injecting a first reducing gas containing hydrogen at a tuyere level of the smelting furnace at a temperature above 1600 °C, - injecting oxygen at the tuyere level of the smelting furnace, and - injecting a second reducing gas at a shaft level of the smelting furnace, wherein coke is fed at a lump coke rate below 220 kg/t HM, preferably below 200 kg/t HM and more preferably below 180 kg/t HM and wherein the rate of oxygen injected at the tuyere level is below 120 Nm3/t HM, preferably below 112 Nm3/t HM.