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Title:
TREATMENT METHOD FOR REMOVING SULFUR IN SLAG CONTAINING SULFUR
Document Type and Number:
Japanese Patent JP2014004582
Kind Code:
A
Abstract:

To provide a method for easily and inexpensively removing a sulfur component from sulfur-containing slag with high efficiency.

This treatment method for removing sulfur in slag comprises: preparing a blast furnace smelting water that is brought into contact with molten slag in a blast furnace and has a pH of 8 or more; reducing a pH of the blast furnace smelting water to less than a pH of 8 by exposing the blast furnace smelting water to air; and then bringing the blast furnace smelting water into contact with slag containing sulfur while controlling a temperature of the blast furnace smelting water so as to be in a range of 15°C or higher and 80°C or lower in the presence of oxygen, to remove a sulfur component contained in the slag.


Inventors:
YAO YASUKO
ODASHIMA KAZUKO
TAKAHASHI KATSUNORI
Application Number:
JP2013112779A
Publication Date:
January 16, 2014
Filing Date:
May 29, 2013
Export Citation:
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Assignee:
JFE STEEL CORP
International Classes:
B09B3/00; B09B5/00; C02F1/74; C04B5/00; C21B3/04; C21B3/08; C21C1/02; F27D15/00; F27D15/02
Domestic Patent References:
JPS55136151A1980-10-23
JP2011093760A2011-05-12
JP2011093761A2011-05-12
JPS52105576A1977-09-05
JP2012239959A2012-12-10
JP2013047152A2013-03-07
JP2012025444A2012-02-09
JPS55136151A1980-10-23
JP2011093760A2011-05-12
JP2011093761A2011-05-12
JPS52105576A1977-09-05
JP2012239959A2012-12-10
JP2013047152A2013-03-07
JP2012025444A2012-02-09
Attorney, Agent or Firm:
Kenichiro Ochiai
Suzuki Yoko



 
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