Title:
廃棄物中の金属の利用方法
Document Type and Number:
Japanese Patent JP4875233
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: 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. SOLUTION: 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
Yasuo Ino
Hidemi Osano
Yasuo Ino
Hidemi Osano
Application Number:
JP2000053874A
Publication Date:
February 15, 2012
Filing Date:
February 29, 2000
Export Citation:
Assignee:
Nippon Steel Engineering Co., Ltd.
International Classes:
B03C1/00; C21C5/52; B09B3/00; F23G5/24; B09B5/00; C21B5/00; C21C5/28; C22B1/00; C22B7/00; C22B7/04; F23J1/08
Domestic Patent References:
| JP10296206A | ||||
| JP11218388A | ||||
| JP58081932A | ||||
| JP62172107A |
Attorney, Agent or Firm:
Masu Kobori
Takato Tsutsumi
Takato Tsutsumi