Title:
METHOD AND APPARATUS FOR REMOVING SELENIUM FROM SLAG, METHOD FOR REUTILIZING SLAG AND METHOD FOR PRODUCING REGENERATED SLAG
Document Type and Number:
Japanese Patent JP2019162610
Kind Code:
A
Abstract:
To provide a method for reutilizing slag by removing selenium contained in the slag and making the slag healthy.SOLUTION: A method for removing selenium from slag includes: a pulverization step pulverizing the slag containing one or more among blast furnace slag, desulfurization slag generated in molten pig iron desulfurization treatment and secondary refining slag generated in molten steel desulfurization treatment; a mixing step making a solid-liquid mixture by mixing pulverized slag with water; a selenium removing step transferring selenium contained in the slag to a liquid phase by adding a medical agent to the solid-liquid mixture; and a solid-liquid separation step separating the slag from a medical agent aqueous solution.SELECTED DRAWING: Figure 3
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Inventors:
JODAI TETSUSHI
ODASHIMA KAZUKO
ODASHIMA KAZUKO
Application Number:
JP2018211878A
Publication Date:
September 26, 2019
Filing Date:
November 12, 2018
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
B09B3/00; C21C1/02; C21C7/00; F27D15/00
Domestic Patent References:
| JP2013095662A | 2013-05-20 | |||
| JP2011246753A | 2011-12-08 | |||
| JP2015123393A | 2015-07-06 | |||
| JP2013053056A | 2013-03-21 |
Foreign References:
| WO2017163595A1 | 2017-09-28 |
Attorney, Agent or Firm:
Isomura Tetsuro
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori