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EXPERIMENTAL STUDY ON PREPARATION OF SLAG FIBER FROM BLAST FURNACE SLAG AND FLY ASH
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摘要: 根据CaO-SiO2-Al2O3-MgO-FeO-Na2O-K2O多元体系的液相线温度和黏度的计算结果，以高炉渣和粉煤灰为原料，用喷吹法转型制备了矿渣纤维。热力学计算结果表明，混合熔体制备矿渣纤维是可行的。经过1450℃时的喷吹实验，高炉渣比例为80%~60%时获得了细长、均匀的棉絮状高质量矿物棉纤维。系统研究了高炉渣配比、喷吹温度、喷吹压力等因素对纤维直径的影响。1450℃时，当高炉渣比例从20%增加至60%时，纤维平均直径从18.08 μm降低至6.03 μm；当高炉渣比例从60%增加到80%时，纤维平均直径为5~7 μm，单纤维平均拉伸强度约为1085 MPa；但是当高炉渣比例>80%时，喷吹产品以玻璃球为主。喷吹温度越高，喷吹压力越大，获得的纤维直径越小。从实际生产的角度出发，控制高炉渣比例为60%~80%，喷吹温度控制在1400~1500℃可以获得高质量的矿物棉纤维。Abstract: In this paper, On the basis of calculating the liquidus temperatures and viscosities of the slag system CaO-SiO2-Al2O3-MgO-FeO-Na2O-K2O, slag fiber was successfully prepared from blast furnace slag and coal ash by the high-speed air-injection method. The effect of factors such as mass ratio of blast furnace slag to coal ash (slag/coal), air-injection temperature and pressure was investigated in detail. While the air-injection experiment was carried out at 1450 ℃, the slag/coal was increased from 20% to 60%, the diameter of the slag fibers was subsequently decreased from 18.08 μm to 6.03 μm. the slag/coal was increased from 60% to 80%, the average fiber diameter was between 5 and 7 μm and the single fiber average tensile strength was about 1085 MPa. However, the glass beads, otherwise fibers, have been prepared if further increased the slag/coal. Hence, high quality mineral wool fibers could be obtained by controlling the addition ratio of the blast furnace slag between 60% and 80%, and the air-injection temperature between 1400 and 1500 ℃.
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Key words:
- blast furnace slag /
- fly ash /
- slag fiber /
- viscosity /
- fiber diameter
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杨铧.冲天炉矿棉面临的挑战及其对策探讨[J].新型建筑材料,1993(9):10-13. 杨铧.高效利用高炉熔渣显热的一步法矿棉生产技术[J].新型建筑材料,2003(3):54-55. 杨铧.用高炉渣热装熔炼矿物棉可能性探讨[J].新型建筑材料,1995:26-29. 戴晓天,齐渊洪,张春霞, 等.高炉渣急冷干式粒化处理工艺分析[J].钢铁研究学报,2007,19(5):14-19. 杨铧.高炉熔渣显热的高效利用:新一步法矿棉技术获得成功[J].节能与环保,2003(2):34-35. 杨铧.高炉熔渣显热的利用:一步法矿棉技术[J].保温材料与节能技术,2002(6):17-19. 用酸性岩石-石英闪长玢岩在冲天炉中溶炼制取岩棉的研究报告[J]. 保温材料与节能技术, 1990(6):2-9. 杜培培,龙跃,李智慧, 等.熔渣酸度系数对矿渣棉性能的影响[J].过程工程学报,2015,15(3):518-523. 张玉柱,刘卫星,张伟, 等.改性高炉渣作为矿渣棉原料的实验研究[J].功能材料,2012,43(增刊1):59-62,66. 孙鹤群,李军,苍大强, 等.利用液态高炉渣制备矿渣棉的调质研究[J].冶金能源,2016,35(2):40-45. 姚建新,边妙莲.粉煤灰对矿渣棉用调质高炉渣析晶性能的影响[J].科学技术与工程,2019,19(36):388-393. 李军,张玲玲,赵贵州, 等.高炉熔渣调质制备高酸度系数矿物棉纤维的研究[J].冶金能源,2019,38(3):41-45. 张良进,龙跃,李智慧, 等.喷吹工艺参数对矿渣棉质量的影响[J].材料与冶金学报,2016,15(1):20-24,32. 唐续龙,张梅,郭敏,等. 基于熔渣结构的多元渣系黏度模型[J]. 工程科学学报, 2020,42(9):1149-1156. 彭苏宁, 刘庆云. 粉煤灰纤维棉及其制品的开发, 粉煤灰综合利用, 1999,13(1):44-47. MILITKY J, KOVACIC V. Ultimate mechanical properties of basalt filaments[J]. Text Research Journal, 1996, 66:225-229. -
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