Directly charging device for directly charging reduced fine...

C - Chemistry – Metallurgy – 21 – B

Patent

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Details

C21B 13/14 (2006.01) C21B 13/00 (2006.01)

Patent

CA 2281748

A device for directly charging the raw material into a melter-gasifier (40) in a molten iron manufacturing facility using directly coal and fine iron ore is disclosed. The elutriation of fine dusts is maximally inhibited while directly charging coal and reduced fines into the melter-gasifier (40). The direct charging device is applied to a fluidized bed type final reducing furnace (30), and has a plurality of discharging outlets (31) for discharging said fines. Said melter-gasifier (40) receives lump coal to form a coal packed bed (41) within it and receives the reduced fine iron ore from the final reducing furnace (30). The direct charging device includes a plurality of charging inlets (51) formed on the side wall of the melter-gasifier (40) connected to conduits (52) to the discharging outlets (31) of the final reducing furnace (30) whereby reduced fine iron ore is continuously charged from the final reducing furnace (30) to the coal packed bed (41) of the melter-gasifier (40).

Dispositif destiné à charger directement la matière première dans un four de fusion-gaséificateur (40) d'une installation de fabrication de fer fondu utilisant directement du charbon et du minerai de fer fin. Lors du chargement direct du charbon et des fines réduites dans le four de fusion-gaséificateur (40), l'élutriation des poussières fines est empêchée au maximum. Ledit dispositif de charge directe est appliqué à un four (30) de réduction finale de type à lit fluidisé et possède une pluralité d'orifices (31) de déchargement destinés à décharger lesdites fines. Ledit four de fusion-gaséificateur (40) reçoit du charbon en gros morceaux destiné à former un lit fixe (41) de charbon à l'intérieur dudit four et reçoit le minerai de fer fin réduit du four (30) de réduction finale. Le dispositif de charge directe comporte une pluralité d'orifices d'entrée (51) de charge ménagés sur la paroi latérale du four de fusion-gaséificateur (40) et connectés à des conduits (52) menant aux orifices (31) de déchargement du four (30) de réduction finale, du minerai de fer fin réduit étant chargé en continu du four (30) de réduction finale au lit fixe (41) de charbon du four de fusion-gaséificateur.

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