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Viscosity Prediction Model for Blast Furnace Slag with High Al2O3
Steel Research International ( IF 1.9 ) Pub Date : 2020-09-09 , DOI: 10.1002/srin.201900635 Haiyan Zheng 1, 2 , Yaqiang Ding 1, 2 , Shifa Zhou 1, 2 , Qiulin Wen 1, 2 , Xin Jiang 1, 2 , Qiangjian Gao 1, 2 , Fengman Shen 1, 2
Steel Research International ( IF 1.9 ) Pub Date : 2020-09-09 , DOI: 10.1002/srin.201900635 Haiyan Zheng 1, 2 , Yaqiang Ding 1, 2 , Shifa Zhou 1, 2 , Qiulin Wen 1, 2 , Xin Jiang 1, 2 , Qiangjian Gao 1, 2 , Fengman Shen 1, 2
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Based on the theory of fluid dynamics, an improved Urbain model (IUM) for predicting viscosity of blast furnace (BF) slag with high Al2O3 slag is proposed by introducing two model parameters, R4 (the ratio of (X(CaO) + X(MgO))/(2X(SiO2) + 3X(Al2O3))) and N (the ratio of X(MgO)/(3X(Al2O3))). Experimental results indicate that the IUM is highly precise and more suitable for BF slag. Isoviscosity contours for CaO–SiO2–15%Al2O3–MgO melts at 1500oC are plotted using the data obtained from the IUM, which show that the slag viscosity centers at the line of Rw2 (the ratio of w(CaO)/w(SiO2)) = 0.92–1.36 (w(SiO2) = 35.66%–38.55%) and Nw (the ratio of w(MgO)/w(Al2O3)) = 0.05–0.76, the viscosity at the center line is 0.3 Pa s, and the viscosity increases in the process of diffusion from the center line to the periphery. Slag viscosity increases generally with increase in the value of Nw(N), decreases slightly with increase in the value of Rw2(R4) when Nw is lower than 0.55, whereas increases with increase in the value of Rw2(R4) when Nw is greater than or equal to 0.55, indicating that the stability of the slag caused by the change in composition becomes poor when Nw is high.
中文翻译：
高Al2O3高炉炉渣粘度预测模型。
基于流体动力学理论，通过引入两个模型参数R 4（（X（CaO）的比值），提出了一种改进的Urbain模型（IUM），用于预测高Al 2 O 3矿渣的高炉矿渣粘度。）+ X（MgO））/（2 X（SiO 2）+ 3 X（Al 2 O 3））））和N（X（MgO）/（3 X（Al 2 O 3）的比率））。实验结果表明，IUM精度很高，更适合于高炉渣。CaO–SiO 2的等粘度曲线使用从IUM获得的数据绘制了在1500 o C时–15％Al 2 O 3 -MgO熔体的图，这表明炉渣粘度中心位于R w 2线（w（CaO）/ w（SiO 2））= 0.92-1.36（w（SiO 2）= 35.66％–38.55％）和N w（w（MgO）/ w（Al 2 O 3））= 0.05–0.76，中心线处的粘度为0.3 Pa s，并且粘度在从中心线向外围扩散的过程中增加。炉渣粘度通常随N w（N）的增加而增加，当N w低于0.55时，随R w 2（R 4）的增加而略有降低，而随R w 2的增加而增加。（- [R 4）时ñ瓦特大于或等于0.55，表明由在组合物中的变化的炉渣的稳定性变差时ñw高。
更新日期：2020-09-09
中文翻译：
高Al2O3高炉炉渣粘度预测模型。
基于流体动力学理论，通过引入两个模型参数R 4（（X（CaO）的比值），提出了一种改进的Urbain模型（IUM），用于预测高Al 2 O 3矿渣的高炉矿渣粘度。）+ X（MgO））/（2 X（SiO 2）+ 3 X（Al 2 O 3））））和N（X（MgO）/（3 X（Al 2 O 3）的比率））。实验结果表明，IUM精度很高，更适合于高炉渣。CaO–SiO 2的等粘度曲线使用从IUM获得的数据绘制了在1500 o C时–15％Al 2 O 3 -MgO熔体的图，这表明炉渣粘度中心位于R w 2线（w（CaO）/ w（SiO 2））= 0.92-1.36（w（SiO 2）= 35.66％–38.55％）和N w（w（MgO）/ w（Al 2 O 3））= 0.05–0.76，中心线处的粘度为0.3 Pa s，并且粘度在从中心线向外围扩散的过程中增加。炉渣粘度通常随N w（N）的增加而增加，当N w低于0.55时，随R w 2（R 4）的增加而略有降低，而随R w 2的增加而增加。（- [R 4）时ñ瓦特大于或等于0.55，表明由在组合物中的变化的炉渣的稳定性变差时ñw高。
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