赵忠宇等:含氟连铸保护渣黏度检测与预测模型 535· 当w(CaF2)>17%,随Al2O3的增加黏度有所下降, (王谦,何生平,李玉刚,等.中国连铸保护渣技术现状及发展需 w(CaF2K17%,Al2O3的增加会使炉渣黏度显著增 求.连铸,2014(5):1) 加;当w(CaF2>11l.5%,随NaO质量增加渣系黏度 [9]Arefpour A R.Monshi A,Saidi A,et al.Effect of CaF,and MnO 显著下降,当w(CaF2K11.5%,Na20对黏度的影响 on mold powder viscosity and solidification during high-speed 并不明显 continuous casting.Refract Ind Ceram,2013,54(3):203 (3)结合模型计算与实验检测,绘制了 [10]Persson M,Seetharaman S,Seetharaman S.Kinetic studies of CaF2-Na20-Al,03-Ca0-Si02-Mg0渣系1500℃ fluoride evaporation from slags.IS/J Int,2007,47(12):1711 下等黏度图,分析得出,低黏度区w(CaF2)接近 [11]Haverkamp R G.An XPS study of the fluorination of carbon 14%,CaF2含量过高或过低都会使炉渣黏度增大. anodes in molten NaF-AIF;-CaF2.J Mater Sci,2012,47(3):1262 (4)炉渣黏度预测模型形式多样,但含氟炉渣 [12]Shi C B,Cho J W,Zheng D L,et al.Fluoride evaporation and 黏度模型较少,且拟合结果偏差较大,根本原因是 crystallization behavior of CaFz-CaO-Al2OTiO2)slag for 含氟炉渣的高温挥发导致成分变化,影响模型预 electroslag remelting of Ti-containing steels.Int J Miner Metall 测的准确性,因此,对含氟渣挥发机制尚需投入 Maer,2016,23(6):627 更多的研究工作才能得到更为准确的黏度预测 [13]Park H S,Kim H,Sohn I.Influence of CaF2 and Li2O on the 模型 viscous behavior of calcium silicate melts containing 12 wt pct Na,O.Metall Mater Trans B,2011,42(2):324 参考文献 [14]Tong Z F,Qiao JL,Jiang X Y.Kinetics of Na,O evaporation from [1]Wang X H.Metallurgy of Iron and Steel:Steelmaking.Beijing: CaO-Al,O-SiO,-MgO-TiO,-NaO slags.Ironmaking Steelma- Higher Education Press,2007 kimg,2017,44(4):237 (王新华.钢铁冶金:炼钢学.北京:高等教育出版社,2007) [15]Park J Y,Ryu J W,Sohn I.In-situ crystallization of highly volatile [2] Anisimov K N,Longinov A M,Toptygin A M,et al.Investigation commercial mold flux using an isolated observation system in the of the mold powder film structure and its influence on the confocal laser scanning microscope.Metall Mater Trans B,2014, developed surface in continuous casting.Steel Transl,2016, 45(4):1186 46(7):489 [16]Shin S H,Cho J W,Kim S H.Structural investigations of [3]Viswanathan NN,Fatemeh S,Du S C,et al.Estimation of escape CaO-CaFz-SiO-SigN based glasses by Raman spectroscopy and rate of volatile components SiF and HF from slags containing XPS considering its application to continuous casting of steels. CaF2 during viscosity measurement.Stee/Res,1999,70(2):53 Mater Des,2015,76:1 [4]Cho J W,Yoo S,Park M S,et al.Improvement of castability and [17]Guo J M,Peng K W,Yi L,et al.Study on properties of surface quality of continuously cast TWIP slabs by molten mold AlO;-CaO-SiOz-CaFz-MgO slag system.Appl Mech Mater,2014, flux feeding technology.Metall Mater Trans B.017,48(1):187 513-517:24 [5]Susa M,Sakamaki T,Kojima R.Chemical states of fluorine in [18]Zhao J X,Ge B L,Cui Y R,et al.High temperature properties CaFz-Cao-SiOz and NaF-NaO-SiO2 glassy slags from the measurement of slag with higher volatile content.Ind Heat,2016, perspective of electronic polarisability.Ironmaking Steelmaking, 45(2):12 2005,32(1):13 (赵俊学,葛蓓蕾,崔雅茹,等.含易挥发组元炉渣的高温性能检 [6]Zhao J X,Zhao Z Y,Shang N,et al.Analysis on influence of 测.工业加热,2016,45(2):12) fluoride in mold powder of continuous casting.Iron Steel,2018, [19]Han X L,Li P.Effect of alkalinity,F's content and Na2O content 53(10):8 in steel slag film crystals.J Hebei United Univ Nat Sci Ed,2014, (赵俊学,赵忠宇,尚南,等.连铸保护渣中氟化物作用及影响分 36(1):18 析.钢铁,2018,53(10):8) (韩秀丽,李沛.碱度值R、F-含量和NaO含量对中碳钢保护渣 [7]Li JY,Zhang L,Tan Y,et al.Research of boron removal from 渣膜结品体的影响规律.河北联合大学学报(自然科学版),2014, polysilicon using CaO-Al2O-SiOz-CaF2 slags.Vacuum,2014, 36(1):18) 103:33 [20]Zhao X J,Wen HQ,Zhang JY.The phase properties of mold flux [8]Wang Q,He S P,Li Y G,et al.Status and developing needs of in continuous casting mold flux.Mod Metall,2019,47(3):46 mould fluxes for continuous casting in China.Continous Cast, (赵显久,温宏权,张捷宇.连铸结品器保护渣物相性能研究.现 2014(5):1 代治金,2019,47(3):46)当 w(CaF2 )>17%,随 Al2O3 的增加黏度有所下降, w(CaF2 )<17%,Al2O3 的增加会使炉渣黏度显著增 加;当 w(CaF2 )>11.5%,随 Na2O 质量增加渣系黏度 显著下降,当 w(CaF2 )<11.5%,Na2O 对黏度的影响 并不明显. ( 3) 结 合 模 型 计 算 与 实 验 检 测 , 绘 制 了 CaF2‒Na2O‒Al2O3‒CaO‒SiO2‒MgO 渣系 1500 ℃ 下等黏度图 ,分析得出 ,低黏度区 w(CaF2 ) 接近 14%,CaF2 含量过高或过低都会使炉渣黏度增大. (4)炉渣黏度预测模型形式多样,但含氟炉渣 黏度模型较少,且拟合结果偏差较大,根本原因是 含氟炉渣的高温挥发导致成分变化,影响模型预 测的准确性,因此,对含氟渣挥发机制尚需投入 更多的研究工作才能得到更为准确的黏度预测 模型. 参 考 文 献 Wang X H. Metallurgy of Iron and Steel: Steelmaking. Beijing: Higher Education Press, 2007 ( 王新华. 钢铁冶金: 炼钢学. 北京: 高等教育出版社, 2007) [1] Anisimov K N, Longinov A M, Toptygin A M, et al. Investigation of the mold powder film structure and its influence on the developed surface in continuous casting. Steel Transl, 2016, 46(7): 489 [2] Viswanathan N N, Fatemeh S, Du S C, et al. Estimation of escape rate of volatile components SiF4 and HF from slags containing CaF2 during viscosity measurement. Steel Res, 1999, 70(2): 53 [3] Cho J W, Yoo S, Park M S, et al. Improvement of castability and surface quality of continuously cast TWIP slabs by molten mold flux feeding technology. Metall Mater Trans B, 2017, 48(1): 187 [4] Susa M, Sakamaki T, Kojima R. Chemical states of fluorine in CaF2‒CaO ‒SiO2 and NaF ‒Na2O ‒SiO2 glassy slags from the perspective of electronic polarisability. Ironmaking Steelmaking, 2005, 32(1): 13 [5] Zhao J X, Zhao Z Y, Shang N, et al. Analysis on influence of fluoride in mold powder of continuous casting. Iron Steel, 2018, 53(10): 8 (赵俊学, 赵忠宇, 尚南, 等. 连铸保护渣中氟化物作用及影响分 析. 钢铁, 2018, 53(10):8) [6] Li J Y, Zhang L, Tan Y, et al. Research of boron removal from polysilicon using CaO–Al2O3–SiO2–CaF2 slags. Vacuum, 2014, 103: 33 [7] Wang Q, He S P, Li Y G, et al. Status and developing needs of mould fluxes for continuous casting in China. Continuous Cast, 2014(5): 1 [8] (王谦, 何生平, 李玉刚, 等. 中国连铸保护渣技术现状及发展需 求. 连铸, 2014(5):1) Arefpour A R, Monshi A, Saidi A, et al. Effect of CaF2 and MnO on mold powder viscosity and solidification during high-speed continuous casting. Refract Ind Ceram, 2013, 54(3): 203 [9] Persson M, Seetharaman S, Seetharaman S. Kinetic studies of fluoride evaporation from slags. ISIJ Int, 2007, 47(12): 1711 [10] Haverkamp R G. An XPS study of the fluorination of carbon anodes in molten NaF–AlF3–CaF2 . J Mater Sci, 2012, 47(3): 1262 [11] Shi C B, Cho J W, Zheng D L, et al. Fluoride evaporation and crystallization behavior of CaF2–CaO–Al2O3–(TiO2 ) slag for electroslag remelting of Ti-containing steels. Int J Miner Metall Mater, 2016, 23(6): 627 [12] Park H S, Kim H, Sohn I. Influence of CaF2 and Li2O on the viscous behavior of calcium silicate melts containing 12 wt pct Na2O. Metall Mater Trans B, 2011, 42(2): 324 [13] Tong Z F, Qiao J L, Jiang X Y. Kinetics of Na2O evaporation from CaO ‒Al2O3‒SiO2‒MgO ‒TiO2‒Na2O slags. Ironmaking Steelmaking, 2017, 44(4): 237 [14] Park J Y, Ryu J W, Sohn I. In-situ crystallization of highly volatile commercial mold flux using an isolated observation system in the confocal laser scanning microscope. Metall Mater Trans B, 2014, 45(4): 1186 [15] Shin S H, Cho J W, Kim S H. Structural investigations of CaO–CaF2–SiO2–Si3N4 based glasses by Raman spectroscopy and XPS considering its application to continuous casting of steels. Mater Des, 2015, 76: 1 [16] Guo J M, Peng K W, Yi L, et al. Study on properties of Al2O3‒CaO‒SiO2‒CaF2‒MgO slag system. Appl Mech Mater, 2014, 513-517: 24 [17] Zhao J X, Ge B L, Cui Y R, et al. High temperature properties measurement of slag with higher volatile content. Ind Heat, 2016, 45(2): 12 (赵俊学, 葛蓓蕾, 崔雅茹, 等. 含易挥发组元炉渣的高温性能检 测. 工业加热, 2016, 45(2):12) [18] Han X L, Li P. Effect of alkalinity, F’s content and Na2O content in steel slag film crystals. J Hebei United Univ Nat Sci Ed, 2014, 36(1): 18 (韩秀丽, 李沛. 碱度值R、F-含量和Na2O含量对中碳钢保护渣 渣膜结晶体的影响规律. 河北联合大学学报(自然科学版), 2014, 36(1):18) [19] Zhao X J, Wen H Q, Zhang J Y. The phase properties of mold flux in continuous casting mold flux. Mod Metall, 2019, 47(3): 46 (赵显久, 温宏权, 张捷宇. 连铸结晶器保护渣物相性能研究. 现 代冶金, 2019, 47(3):46) [20] 赵忠宇等: 含氟连铸保护渣黏度检测与预测模型 · 535 ·