MgO Effect on the Hydrothermal Solidification of Blast Furnace Slag

Yoshikawa, Takeshi; Hosokawa, Masaru; Tanaka, Toshihiro

ISIJ International, 2008, 48(5), 557-562

Number of Access:351（2025-09-03 06:08 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/26388

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Title
MgO Effect on the Hydrothermal Solidification of Blast Furnace Slag
Creator
NRID
1000090435933 1000090435933
CreatorName
Yoshikawa, Takeshi
CreatorName
Hosokawa, Masaru
NRID
1000010179773 1000010179773
researchmap permalink
read0013978 read0013978
CreatorName
Tanaka, Toshihiro
Subject
blast furnace slag
hydrothermal reaction
hydrothermal hot pressing
flexural strength
Abstract
Due to the large generation of blast furnace (BF) slag, new recycling processes that produce valuable materials are required. The authors have focused on a hydrothermal treatment of BF slag using waste heat exhausted from iron- and steelmaking processes. Although BF slag contains Al_2O_3, which is well known to have a deteriorating effect on hydrothermal reactions, especially CaO–SiO_2 hydration, it can be successfully solidified by hydrothermal treatment above 523 K. We focused on the contribution of MgO in BF slag to the hydrothermal reactivity in the slag system. The hydrothermal solidification of synthesized CaO–SiO_2–Al_2O_3 and CaO–SiO_2–Al_2O_3–MgO slags were investigated in the present work. The hydrothermal solidification behaviors of slags are discussed based on the degree and type of crystal formation during the hydrothermal process.
Publisher
日本鉄鋼協会
The Iron and Steel Institute of Japan
ニホン　テッコウ　キョウカイ
Source Title
ISIJ International
Volume (Issue)
48(5)
Page
557-562
Date of Issued
2008
Language
English
Handle URL
https://hdl.handle.net/11094/26388
PISSN
09151559
NCID
AA10680712
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.2355/isijinternational.48.557
Access Rights
open access
CopyRight
© 2008 ISIJ
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article