MgO Effect on the Hydrothermal Solidification of Blast Furnace Slag

Yoshikawa, Takeshi; Hosokawa, Masaru; Tanaka, Toshihiro

doi:info:doi/10.2355/isijinternational.48.557

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タイトル	MgO Effect on the Hydrothermal Solidification of Blast Furnace Slag
著者	Yoshikawa, Takeshi Yoshikawa, Takeshi
	Hosokawa, Masaru Hosokawa, Masaru
	Tanaka, Toshihiro Tanaka, Toshihiro
キーワード等	blast furnace slag
	hydrothermal reaction
	hydrothermal hot pressing
	flexural strength
抄録	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.
公開者	日本鉄鋼協会
公開者の別表記	The Iron and Steel Institute of Japan
公開者 (ヨミ)	ニホン　テッコウ　キョウカイ
掲載誌名	ISIJ International
巻	48
号	5
開始ページ	557
終了ページ	562
刊行年月	2008
ISSN	09151559
NCID	AA10680712
DOI (出版社版)	info:doi/10.2355/isijinternational.48.557
URL	http://hdl.handle.net/11094/26388
権利情報	© 2008 ISIJ
言語	英語
カテゴリ	学術雑誌論文 Journal Article

著者版フラグ	publisher
NII資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
dcmi資源タイプ	text
DCTERMS.bibliographicCitation	ISIJ International.48(5) P.557-P.562
DC.title	MgO Effect on the Hydrothermal Solidification of Blast Furnace Slag
DC.creator	Yoshikawa, Takeshi
	Hosokawa, Masaru
	Tanaka, Toshihiro
DC.publisher	日本鉄鋼協会
DC.language" scheme="DCTERMS.RFC1766	英語
DCTERMS.issued" scheme="DCTERMS.W3CDTF	2008
DC.identifier	info:doi/10.2355/isijinternational.48.557
DC.identifier" scheme="DCTERMS.URI	http://hdl.handle.net/11094/26388
DC.subject	blast furnace slag
	hydrothermal reaction
	hydrothermal hot pressing
	flexural strength
DCTERMS.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.
DC.rights	© 2008 ISIJ
citation_title	MgO Effect on the Hydrothermal Solidification of Blast Furnace Slag
citation_author	Yoshikawa, Takeshi
	Hosokawa, Masaru
	Tanaka, Toshihiro
citation_publisher	日本鉄鋼協会
citation_language	英語
citation_date	2008
citation_journal_title	ISIJ International
citation_volume	48
citation_issue	5
citation_firstpage	557
citation_lastpage	562
citation_issn	09151559
citation_doi	info:doi/10.2355/isijinternational.48.557
citation_public_url	http://hdl.handle.net/11094/26388
citation_keywords	blast furnace slag
	hydrothermal reaction
	hydrothermal hot pressing
	flexural strength

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