Title:
METHOD FOR TREATING STEELMAKING SLAG
Document Type and Number:
Japanese Patent JP2015147979
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for treating steelmaking slag, in which modified slag, that can be used in a wide application range, can be obtained while reducing the amount of the steelmaking slag to be generated.SOLUTION: The method for treating steelmaking slag, which slag is generated in such a steelmaking process that impurities in molten iron are removed, comprises a modification reduction treatment step of charging the steelmaking slag in a reaction vessel, heating the charged steelmaking slag, and adding a carbonaceous reducing material to the heated slag to obtain the modified slag and recoverable metals. The modification reduction treatment step is completed before the total Fe concentration in the modified slag becomes lower than 5 mass%.
More Like This:
Inventors:
HIRATA HIROSHI
MATSUO MITSUTAKA
MATSUO MITSUTAKA
Application Number:
JP2014021751A
Publication Date:
August 20, 2015
Filing Date:
February 06, 2014
Export Citation:
Assignee:
NIPPON STEEL & SUMITOMO METAL CORP
International Classes:
C21C1/02; C04B5/06; C21C5/28; F27D15/00
Domestic Patent References:
| JPH0480330A | 1992-03-13 | |||
| JP2012007190A | 2012-01-12 |
Attorney, Agent or Firm:
Masatake Shiga
Tadashi Takahashi
Sumio Tanai
Tomoo Katsumata
Tadashi Takahashi
Sumio Tanai
Tomoo Katsumata