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AssigneeKabushiki Kaisha Kobe Seiko Sho
InventorsYoshihiro Urabe, Takao Umeki, Masahiko Tetsumoto, Toshikatsu Uchida, Sumito Hashimoto
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Heat-treated products discharged from a discharge port of a movable hearth type heat treatment furnace, for example a rotary hearth type reduction furnace are discharged to a sorting means, the heat-treated products that foreign substances have been removed, are discharged through a seal leg into which anti-reoxidation gas is blown from a gas blowing nozzle, to a receiving recess of a receiving pan provided within a case having a hopper attached thereto which is a feeding means, and then a scraper is swung to discharge the heat-treated products deposited on the top surface of the receiving recess from the longitudinal ends of the receiving pan and simultaneously to quantitatively feed it to a molten iron-manufacturing furnace 8, which is a downstream side facility, from the bottom side discharge port of the casing having a hopper attached thereto, and in addition, dust removal/cooling means for produced gas of the molten iron-manufacturing furnace and means for regulating the amount of produced gas are provided.
A discharge apparatus for a movable hearth heat treatment furnace which discharges heat-treated products from the movable hearth heat treatment furnace to a downstream side facility, characterized in that the discharge apparatus comprises, in a casing, a recessed retaining member provided with a receiving recess for receiving and temporarily retaining the heat-treated products discharged from said movable hearth heat treatment furnace, and scraper that reciprocates along a surface of said receiving recess and discharges said heat-treated products retained in the receiving recess into said casing.
An apparatus for manufacturing molten iron characterized in that the apparatus comprises a movable hearth heat treatment furnace for obtaining reduced iron by reducing raw material formed by mixing at least powdered iron oxide-containing material and powdered carbonaceous reducing agent, a sorting means for removing foreign substances entrained in said reduced iron discharged from said movable hearth heat treatment furnace based on the size of the foreign substances, and a molten iron-manufacturing furnace for obtaining molten iron by melting said reduced iron in which said foreign substances have been removed by the sorting means.
A method of operating a movable hearth heat treatment furnace which discharges heat-treated products from the movable hearth heat treatment furnace to a downstream side facility, characterized in that the method comprises steps of receiving and temporarily retaining the heat-treated products discharged from said movable hearth heat treatment furnace in a receiving recess of a recessed retaining member provided in a casing;
An method of manufacturing molten iron characterized in that the method comprises a reduction step of reducing raw material formed by mixing at least powdered iron oxide-containing material and powdered carbonaceous reducing agent to obtain reduced iron, a sorting step of removing foreign substances entrained in the reduced iron discharged from the reduction step based on the size of the foreign substances, and a melting step of melting said reduced iron in which said foreign substances have been removed in the sorting step, thereby obtaining molten iron.
Dependencies are inferred from the claim text.