Title:
How to carry out separation recovery of the iron from the Waste non-ferrous slag discharged at a nonferrous refinement process
Document Type and Number:
Japanese Patent JP5944522
Kind Code:
B2
Abstract:
The present invention provides a method of separating and recovering iron from a waste non-ferrous slag, generated in a process for smelting of non-ferrous metals, including copper, zinc and lead, in which a reducing agent and a reaction catalyst are added to the crushed waste non-ferrous slag, and the mixture is subjected to a reduction reaction, thereby converting amorphous iron oxides, bound to alumina, calcium oxide, magnesium oxide, silica, and the like in the waste non-ferrous slag, to crystalline iron (Fe) and iron carbide (Fe2C); the resulting material is crushed to separate iron and iron carbide obtained by the reduction reaction from components such as alumina, calcium oxide, magnesium oxide, silica, and the like; the crushed material is separated into fractions by particle size; and the fractions are subjected to wet magnetic separation and dry magnetic separation to separate and recover magnetic iron concentrates from the fractions.
Inventors:
Kim Byung Soo
Jae Jung
Jeongsu
Shinyoung
Jae Jung
Jeongsu
Shinyoung
Application Number:
JP2014543402A
Publication Date:
July 05, 2016
Filing Date:
October 18, 2012
Export Citation:
Assignee:
KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES(KIGAM)
International Classes:
C22B7/04; B03C1/00; B09B3/00; B09B5/00; C21B13/12
Domestic Patent References:
| JP62254851A |
Foreign References:
| KR1020110077258A |
Attorney, Agent or Firm:
Yukio Murata
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