Title:
製鋼スラグからの有価金属の回収方法
Document Type and Number:
Japanese Patent JP5524097
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To enhance the recovery rate of iron-manganese oxide recovered from steelmaking slag.SOLUTION: This method for recovering valuable metals from steelmaking slag containing CaO-SiO-POphase and (Fe, Mn)Ophase includes: removing the base metal from the steelmaking slag; adjusting basicity of the steelmaking slag to 1.5-2.5; crushing the slag from which the base metal has been removed so that the typical particle size of the slag after crushing becomes ≤50 μm; classifying the crushed slag into coarse particles and fine particles so that the ratio of the typical particle size of the coarse particles to the typical particle size of the fine particles becomes ≥2.5 times; and recovering the coarse particles after classification.
Inventors:
Kuma horse
Koichi Sakamoto
Koichi Sakamoto
Application Number:
JP2011011874A
Publication Date:
June 18, 2014
Filing Date:
January 24, 2011
Export Citation:
Assignee:
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C04B5/00; B09B3/00; B09B5/00; C21C1/02; C21C5/28; C22B7/04; C22B47/00; F27D15/00
Domestic Patent References:
| JP2011236115A |
Attorney, Agent or Firm:
Toshio Yasuda
Mikio Yasuda
Mikio Yasuda