Invention Grant
- Patent Title: Method of charging fine-grained metals into an electric-arc furnace
- Patent Title (中): 将细粒金属装入电弧炉的方法
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Application No.: US10566033Application Date: 2004-07-01
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Publication No.: US08391331B2Publication Date: 2013-03-05
- Inventor: Heinz Eichberger , Karl-Josef Schneider
- Applicant: Heinz Eichberger , Karl-Josef Schneider
- Applicant Address: FI Espoo DE Duesseldorf
- Assignee: Outotec Oyj,SMS Siemag AG
- Current Assignee: Outotec Oyj,SMS Siemag AG
- Current Assignee Address: FI Espoo DE Duesseldorf
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: DE10333764 20030723
- International Application: PCT/EP2004/007153 WO 20040701
- International Announcement: WO2005/014868 WO 20050217
- Main IPC: H05B11/00
- IPC: H05B11/00

Abstract:
In a method of charging fine-grained metals, in particular directly reduced iron (DRI), into an electric-arc furnace (1), the metal is supplied via a downpipe (12) to an opening (10) provided in the furnace roof (4), is introduced into the furnace (1) through this opening (10) as bulk material stream (11), and falls onto the melt (13) merely by gravity. Further, an electric-arc furnace (1) suited for this purpose is described. A rather loss-free introduction even of fine-grained material having a mean grain size of less than 1 mm is achieved by passing the bulk material stream (11) through a dosing orifice (8) after the downpipe (12) and before entering the furnace (1). The bulk material stream (11) then enters the furnace essentially undisturbed.
Public/Granted literature
- US20070082312A1 Method of charging fine-grained metals into an electric-arc furnace Public/Granted day:2007-04-12
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