Title:
【発明の名称】製鉄所ダストの処理方法
Document Type and Number:
Japanese Patent JP2003524070
Kind Code:
A
Abstract:
The invention concerns a method for upgrading steel plant dust to recuperate industrially reusable compounds. Said method comprises an attrition and dilution step, a solid/liquid separating and solid washing step, an acid leaching step, and acid purification step comprising a carburizing reaction or a carburizing and decalcification reaction. Said method is characterised in that it comprises an oxidation/neutralisation step which includes a step oxidizing iron into iron oxyhydroxides and/or iron oxides and a neutralizing reaction of the reaction medium.
More Like This:
Inventors:
Tejar, Farouk
Juyf, frederik
Juyf, frederik
Application Number:
JP2001561799A
Publication Date:
August 12, 2003
Filing Date:
February 09, 2001
Export Citation:
Assignee:
Rekyu pack
International Classes:
B09B3/00; B03B5/32; B03B7/00; B09B5/00; C22B3/04; C22B3/44; C22B3/46; C22B7/00; C22B7/02; C22B19/30; C25C1/16; (IPC1-7): C22B7/02; B03B5/32; B03B7/00; B09B3/00; B09B5/00; C22B3/04; C22B3/44; C22B3/46; C22B19/30; C25C1/16
Domestic Patent References:
| JPH07316677A | 1995-12-05 | |||
| JPH0797638A | 1995-04-11 | |||
| JPH07216470A | 1995-08-15 | |||
| JPH0254729A | 1990-02-23 | |||
| JPS59116339A | 1984-07-05 | |||
| JPS553415B2 | 1980-01-25 | |||
| JPS5282617A | 1977-07-11 | |||
| JPH09241773A | 1997-09-16 |
Foreign References:
| WO1997006215A1 | 1997-02-20 | |||
| WO1999053108A1 | 1999-10-21 | |||
| GB1494564B |
Attorney, Agent or Firm:
Takashi Ishida (4 others)