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ID 14730
Eprint ID
14730
フルテキストURL
タイトル(別表記)
Material recycling of blast furnace slag by phase separation of glass
著者
崎田 真一 岡山大学保健環境センター環境安全部門
三上 修平 岡山大学環境理工学部環境物質工学科
難波 徳郎 岡山大学環境理工学部環境物質工学科
三浦 嘉也 岡山大学環境理工学部環境物質工学科
抄録
A novel recycling process of blast furnace slag was developed in order to obtain colorless silica-rich solids by using phase separation of borosilicate glass. B(2)O(3) was added to blast furnace slag to promote the phase separation. The slag glasses were heat-treated above glass transition temperatures. The slag glass prepared from blast furnace slag gelled after the heat treatment and the subsequent three types of acid treatment. The ratios of SiO(2) component in the gels were 40 – 60mass%. On the other hand, phase separation was observed on the surface of the slag glasses prepared from pre-treated slag by 2.5N HCl after the heat treatment. After soaking in acid, they did not gel and changed to insoluble colorless solids. According to compositional analyses, it was found that the insoluble colorless solids contained 70 - 90mass% SiO(2). No colored ions such as Cr, Mn, and Fe were confirmed in the remaining insolubles by optical absorption measurement. Therefore, the colorless silica-rich solids were successfully obtained in the present process. The end products obtained in the present process are expected as material of glass.
キーワード
Blast furnace slag
Recycling
Colorless silica-rich solids
Phase separation
Glass
備考
論文
発行日
2007-10
出版物タイトル
環境制御
出版物タイトル(別表記)
Environmental research & control
29巻
出版者
岡山大学環境管理センター
出版者(別表記)
Environmental Management Center, Okayama University
開始ページ
11
終了ページ
15
ISSN
0917-1533
NCID
AN1024789X
資料タイプ
学術雑誌論文
言語
Japanese
論文のバージョン
publisher
査読
有り
Eprints Journal Name
erc