|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||9th International Symposium on High Temperature Metallurgical Processing
||D-3: Effect of Chemical Components of Mould Flux on Dissolution Rate of Al2O3 into Molten Flux for High Manganese High Aluminum Steel
||Kun-peng Xu, Ya-bing Zhang, Qian Wang, Sheng-ping He
|On-Site Speaker (Planned)
A mass of Al2O3 tends to produce during the continuous casting process of high manganese high aluminum steel, and the properties of mould flux and the quality of slab are seriously affected. The dissolution rate of Al2O3 into the CaO-SiO2-MgO-Al2O3-F-Na2O-Li2O-BaO-B2O3 slag system has been investigated at 1573K by rotating cylinder method. This paper focuses on the effects of Na2O content, Li2O content, B2O3 content, CaF2 content, Al2O3 content, (CaO+BaO)/(Al2O3+SiO2）ratio and viscosity on dissolution rate. Experimental results show that the dissolution rate rised with increasing Na2O content, Li2O content, B2O3 content, CaF2 content and decreasing Al2O3 content, among which B2O3 had the greatest effect on increasing dissolution rate; the dissolution rate increased with decreasing viscosity and increasing (CaO+BaO)/(Al2O3+SiO2) ratio within the ratio range of 0.91~1.31. The dissolution rate of Al2O3 into molten flux was mainly affected by the fluidity of the mould flux and the thermodynamic driving force.