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Title:
METHOD FOR UTILIZING METAL IN REFUSE
Document Type and Number:
Japanese Patent JP2001240917
Kind Code:
A
Abstract:

To provide a method for utilizing metals in refuse by which the metals in the refuse, such as municipal waste or industrial waste, can effectively be utilized as a cold iron source and also such problems as a disposal field of incinarating ash can be resolved.

The metals obtained by processes in which the refuse is directly melted, cooled and solidified and the obtained fused and solidified material is recovered by an electro-magnetic selection are used as part of the cold iron source in a metallurgical furnace by mixing it with other iron sources. Further, moisture in the metals can be removed by drying after recovering the metals from the fused and solidified material by the electro-magnetic selection. The metals recovered by the electro-magnetic selection from the fused and solidified material are used at the weight ratio of ≥50 mass parts of iron scraps per 1 mass part of the recovered metal as the cold iron source in an electric furnace or at the weight ratio of ≥100 mass parts of molten iron and the iron scraps per 1 mass part of the recovered metal as the cold iron source in a converter or a blast furnace.


Inventors:
NISHIHARA NOBUYOSHI
INO YASUO
OSANO HIDEMI
Application Number:
JP2000053874A
Publication Date:
September 04, 2001
Filing Date:
February 29, 2000
Export Citation:
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Assignee:
NIPPON STEEL CORP
International Classes:
B03C1/00; B09B3/00; B09B5/00; C22B1/00; C22B7/00; C22B7/04; F23J1/08; F23G5/24; (IPC1-7): C22B1/00; B09B3/00; B09B5/00; C22B7/00; F23G5/24; F23J1/08
Domestic Patent References:
JPH04198430A1992-07-17
JPH0741874A1995-02-10
JPH10156329A1998-06-16
JPH05237468A1993-09-17
JPS62172107A1987-07-29
JPH11181513A1999-07-06
Attorney, Agent or Firm:
Masashi Kobori (1 person outside)