水熱ホットプレス法による高炉スラグを原料とした微細孔を有する固化体の作製および熱伝導率測定

平井, 信充; 前田, 壮一郎; 勝山, 茂 他

鉄と鋼, 2009, 95(1), 1-6

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Identifier to cite or link to this item: https://hdl.handle.net/11094/26373

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Title
水熱ホットプレス法による高炉スラグを原料とした微細孔を有する固化体の作製および熱伝導率測定
Fabrication of Porous Solidified Materials from Blast Furnace Slag Using Hydrothermal Hot-pressing Method and Measurement of Thermal Conductivity of Solidified Materials
スイネツ　ホットプレス　ホウ　ニ　ヨル　コウロ　スラグ　ヲ　ゲンリョウ　ト　シタ　ビサイコウ　ヲ　ユウスル　コタイカ　ノ　サクセイ　オヨビ　ネツ　デンドウリツ　ソクテイ
Creator
NRID
1000050294020 1000050294020
CreatorName
平井, 信充 ; ヒライ, ノブミツ ; Hirai, Nobumitsu
CreatorName
前田, 壮一郎 ; マエダ, ソウイチロウ ; Maeda, Soichiro
NRID
1000000224478 1000000224478
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Scopus Author ID
35413571700 35413571700
CreatorName
勝山, 茂 ; カツヤマ, シゲル ; Katsuyama, Shigeru
NRID
1000010179773 1000010179773
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read0013978 read0013978
CreatorName
田中, 敏宏 ; タナカ, トシヒロ ; Tanaka, Toshihiro
Subject
blast furnace slag
porosity
thermal conductivity
value-added materials
hydrothermal
Abstract
To produce insulating construction materials using hydrothermal reaction from blast furnace slag (BF slag) such as air-cooled, air granulated, and water-cooled slags, we investigated the fabrication of porous solidified materials from BF slag by a hydrothermal hot-pressing method. The thermal conductivity of the solidified materials was also investigated. The experimental conditions were; hydrothermal holding time from 0 to 120 min, hydrothermal temperature from 250 to 350°C, hydrothermal pressure from 20 to 80 MPa, and slag powder sizes less than 15 μm, 39±24 μm, 84±21 μm, 178±72 μm, 375±125 μm and more than 500 μm. It was found that growth of the hydrothermally reacted phase led to a higher density and higher thermal conductivity of the solidified materials. It was noteworthy that the thermal conductivity of the hydrothermal solidified materials became smaller when the size of the slag powder was larger. This was because the more porous structure introduced into the solidified materials resulted in a lower density of the solidified materials. It was also found that glassy slag such as water-cooled and air granulated slags can be solidified even if the size of the slag powder was more than 500 μm.
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
鉄と鋼
Volume (Issue)
95(1)
Page
1-6
Date of Issued
2009
Language
Japanese
Handle URL
https://hdl.handle.net/11094/26373
PISSN
00211575
NCID
AN00151251
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.2355/tetsutohagane.95.1
Access Rights
open access
CopyRight
©日本鉄鋼協会
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article