Lightweight corundum-mullite refractories: II, Effects of porous aggregates on the slag resistances of corundum-mullite refractories
3
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Corrosion of five corundum-mullite refractories with the different porous aggregates and the same matrix by the blast furnaceslag was conducted using the static crucible test. Effects of properties of corundum-mullite aggregates on the slag resistanceof refractories were investigated through X-ray diffractometer (XRD), scanning electron microscopy (SEM), and mercuryporosimetry measurement, etc. It is found that the porous corundum-mullite aggregates have different slag absorbing capacity,which affects the composition of the corroded aggregates and matrices at slag/refractory interface, and thus affects the slagcorrosion and penetration resistances. Comparing with the dense corundum-mullite refractory, the porous corundum-mulliteaggregate with 31.6% apparent porosity (AP) substituting the dense aggregates in the refractories does not make the slagresistance degenerate and reduces the bulk density by 16.7 wt%; whereas, when the APs of aggregates increase to 41.6-44.8%,the slag resistance sharply deceases. It is a successful case that the developed lightweight refractory with high slag resistancehas a potential application for working lining of high-temperature furnace.
Abstract
Corrosion of five corundum-mullite refractories with the different porous aggregates and the same matrix by the blast furnaceslag was conducted using the static crucible test. Effects of properties of corundum-mullite aggregates on the slag resistanceof refractories were investigated through X-ray diffractometer (XRD), scanning electron microscopy (SEM), and mercuryporosimetry measurement, etc. It is found that the porous corundum-mullite aggregates have different slag absorbing capacity,which affects the composition of the corroded aggregates and matrices at slag/refractory interface, and thus affects the slagcorrosion and penetration resistances. Comparing with the dense corundum-mullite refractory, the porous corundum-mulliteaggregate with 31.6% apparent porosity (AP) substituting the dense aggregates in the refractories does not make the slagresistance degenerate and reduces the bulk density by 16.7 wt%; whereas, when the APs of aggregates increase to 41.6-44.8%,the slag resistance sharply deceases. It is a successful case that the developed lightweight refractory with high slag resistancehas a potential application for working lining of high-temperature furnace.
참고문헌 (16)
- W. Yan, , J. Ceram. Process. Res, 13, pp.278~282 (2012)
- W. Yan, , Ceram-Silikáty, 54, pp.315~319 (2010)
- W. Yan, , Am. Ceram. Soc. Bull, 84, pp.9201~9203 (2005)
- Wen Yan, "Effects of sintering temperature on pore characterization and strength of porous corundum-mullite ceramics", Journal of Ceramic Processing Research, 11(3), pp.388~391 (2010), 세라믹공정연구센터
- W. Yan, , Sci. Sinter, 41, pp.275~281 (2009)
- R. Salomao, , Ceram. Int, 37, pp.1393~1399 (2011)
- W. Yan, "Interceram: Refractories Manual", pp.25~28 (2009)
- N. Li, "Refractories Fundamental and Technology", pp.9~ (2010), Metallurgical Industry Press
- M. N. Dunaeva, , Refract. Ind. Ceram, 47, pp.199~200 (2006)
- C. Aksel, , Ceram. Int, 29, pp.183~188 (2003)
- B. Meng, , Ceram. Int, 39, pp.1525~1531 (2013)
- J. Stjernberg, , Ceram. Int, 39, pp.791~800 (2013)
- J.L. Liu, , Refractories & Lime, 34, pp.33~40 (2009)
- L.L Wang, , Ironmaking, 20, pp.31~32 (2001)
- W. Yan, , Int. J. Appl. Ceram. Technol, 5, pp.633~640 (2008)
- W. Yan, , J. Ceram. Process. Res