1. School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2. Technology Division, Henan Winna Industrial Group Co., Ltd., Gongyi 451250, Henan, China
Abstract:The slag corrosion resistance and the adherent slag performance of carbon-based brick and corundum-based brick were investigated. The slag corrosion mechanisms of carbon-based brick and corundum-based brick were studied at 1 500 ℃. The microstructure and the phase composition of the corrosion interface were respectively analyzed by SEM-EDS and XRD. Then the adherent slag mechanisms of carbon-based brick and corundum-based brick were analyzed. The results show that the spinel (MA) can be generated by the reaction between blast furnace slag and corundum-based brick on the corrosion interface. Then the corrosion process is hindered by the generated spinel (MA) and some high melting point phases (Al2O3,SiC) in corundum-based brick. However, the high melting point phases cannot be formed on carbon-based brick surface. A small number of the points bonding blast furnace slag and carbon-based brick lead to the poor bonding strength, and then the slag crust periodically falls off from the carbon-based brick surface.
L.A.D?az a, R.Torrecillas, A.H.de Aza.A.D?az a, R.Torrecillas, A.H.de Aza. Effect of spinel content on slag attack resistance of high alumina refractory castables[J]. Journal of the European Ceramic Society, 2007, 27: 4623-4631.[J].Journal of the European Ceramic Society, 2007, 27(5):4623-4631
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L.A.D?az a, R.Torrecillas, A.H.de Aza.A.D?az a, R.Torrecillas, A.H.de Aza. Effect of spinel content on slag attack resistance of high alumina refractory castables[J]. Journal of the European Ceramic Society, 2007, 27: 4623-4631.[J].Journal of the European Ceramic Society, 2007, 27(5):4623-4631
[13]
De-Xin Yang, Yan-GaiLiun, Ming-HaoFang.Study on the slag corrosion resistance of unfired Al2O3–SiC/β–Sialon/Ti(C, N)–C refractories[J]. Ceramics International, 2014, 40:1593-1598.[J].Ceramics International, 2014, 40(7):1593-1598
[13]
De-Xin Yang, Yan-GaiLiun, Ming-HaoFang.Study on the slag corrosion resistance of unfired Al2O3–SiC/β–Sialon/Ti(C, N)–C refractories[J]. Ceramics International, 2014, 40:1593-1598.[J].Ceramics International, 2014, 40(7):1593-1598