学術雑誌論文

学術雑誌論文

text

鉄と鋼. 2009, 95(1), p. 1-6

日本語

text

2009

https://doi.org/10.2355/tetsutohagane.95.1

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.

©日本鉄鋼協会

26373

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

日本鉄鋼協会

日本語

2009

鉄と鋼

95

1

1

6

https://doi.org/10.2355/tetsutohagane.95.1

https://hdl.handle.net/11094/26373