FLUIDIZED REDUCTION METHOD FOR GRANULAR ORE

PURPOSE:To improve thermal efficiency by making heating zone of whole height in fluidized bed, by dividing inner part of a fluidized reduction furnace into a reducing zone and the heating zone so as to communicate at the prescribed position, fluidizing them separately and shifting ore mutually betwe...

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Bibliographische Detailangaben
Hauptverfasser:	FURUYA SHOJI, HIGUCHI SADAO, HORIE TETSUO, ANEZAKI MASAHARU, MARUKAWA YUJO, SHIMIZU MAKOTO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS MANUFACTURE OF IRON OR STEEL METALLURGY METALLURGY OF IRON PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	PURPOSE:To improve thermal efficiency by making heating zone of whole height in fluidized bed, by dividing inner part of a fluidized reduction furnace into a reducing zone and the heating zone so as to communicate at the prescribed position, fluidizing them separately and shifting ore mutually between both zones. CONSTITUTION:The inner part of the fluidized reduction furnace 1 is partitioned into the reducing zone 11 and the heating zone 12 by a partition wall 10 and the also both zones 11, 12 are communicated at the prescribed position, to form opening zones 15, 16. Fluidized gas 2 is separately supplied into both above zones 11, 12, to develop difference of flow rate of the gas. And, the ore is shifted mutually between both zones 11, 12. Thus, by supplying the heat to the heating zone 12, the heat is compensated over whole zone in the inner part of the furnace.