Title:
STEAM AGING METHOD AND PRODUCTION METHOD OF ROADBED MATERIAL
Document Type and Number:
Japanese Patent JP2020152601
Kind Code:
A
Abstract:
To provide a method of steam aging steel slag capable of stably curbing hydration expansion of the steel slag without adding water.SOLUTION: A steam aging method of this invention includes blowing steam 34 into accumulated steel slag 10, in which the steel slag is subjected to changing the accumulation state during the steam blowing into the steel slag. It is further preferable to change a volume state of the steel slag, if a period from a start of the steam blowing to the end is assumed to be 0-100%, during a range of 10-90% of the period.SELECTED DRAWING: Figure 1
Inventors:
HOSHINO KEN
IWASAKI HIROSHI
IWASAKI HIROSHI
Application Number:
JP2019051239A
Publication Date:
September 24, 2020
Filing Date:
March 19, 2019
Export Citation:
Assignee:
JFE STEEL CORP
International Classes:
C04B5/00; F27D15/00
Attorney, Agent or Firm:
Isomura Tetsuro
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori
Akira Kumasaka
Tetsuya Sakai
Kazuhiro Mori