OPERATION OF VERTICAL FURNACE

PROBLEM TO BE SOLVED: To execute the reduction-melting treatment of difficult-to-reduce ore in an operation with low fuel ratio using fine grain solid fuel, although conventionally, the reduction-melting treatment of the difficult-to-reduce oxide is executed at high coke ratio. SOLUTION: In the oper...

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Bibliographische Detailangaben
Hauptverfasser:	NAITO MASAAKI, MATSUMOTO YUKINOBU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To execute the reduction-melting treatment of difficult-to-reduce ore in an operation with low fuel ratio using fine grain solid fuel, although conventionally, the reduction-melting treatment of the difficult-to-reduce oxide is executed at high coke ratio. SOLUTION: In the operational method, by which iron source and the solid fuel are charged into a furnace from the top part of the vertical furnace 1 having multi-stage tuyeres 9a, 9b in the height direction of the sidewall in the furnace body 7 and oxygen-containing gas at room temp. or