Title:
METHOD FOR RECOVERING VALUABLES FROM DEPHOSPHORIZED SLAG
Document Type and Number:
Japanese Patent JP2017205715
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To efficiently recover valuables such as granular iron and iron oxide from dephosphorized slag, while excluding phosphorus, which is difficult to reuse.SOLUTION: A method for recovering valuables from dephosphorized slag comprises: pulverizing dephosphorized slag 1 having a basicity of 1.5-2.5 after dephosphorization, to make it become slug having a sold-liquid ratio of 0.20 or less after the pulverization; and performing a wet magnetic separation for the slug to recover valuables 2 including granular iron and iron oxide, from the dephosphorized slag 1. In the method for recovering valuables from the dephosphorized slag 1, the dephosphorized slag 1 is pulverized so that a relationship between a granular diameter D, and a magnetic field intensity G becomes within a range of a formula (1), where the Dis the granular diameter of the dephosphorized slag 1 after the pulverization, while the G is the magnetic field intensity G at the wet magnetic separation.SELECTED DRAWING: Figure 1
Inventors:
TSUSHIMA TAKU
TSUSHIMO OSAMU
TSUSHIMO OSAMU
Application Number:
JP2016100456A
Publication Date:
November 24, 2017
Filing Date:
May 19, 2016
Export Citation:
Assignee:
KOBE STEEL LTD
International Classes:
B09B5/00; B03C1/00; B03C1/005; B03C1/30; B09B3/00; C04B5/00; C22B7/04
Attorney, Agent or Firm:
Toshio Yasuda
Mikio Yasuda
Mikio Yasuda
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