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Pilot Trial of Direct Modification of Molten Blast Furnace Slag and Production of High Acidity Coefficient Slag Wool Fibers

机译:高炉渣熔体直接改性及高酸度炉渣羊毛纤维生产的中试研究

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摘要

Pilot trial of direct modification of molten blast furnace slag and production of high acidity coefficient slag wool fibers were investigated nearby a blast furnace. Molten blast furnace slag discharged from blast furnace and then directly flow into specialized modification furnace and quartz was simultaneously added into the molten slag as modification agent. The modified molten slag was electric heated to 1500-1550 °C and then the melt was produced into slag wool fibers through high-speed centrifugation method. Melt with acidity coefficient of 1.2, 1.4, 1.6 and 1.8 were investigated and fibers with corresponding acidity coefficient were produced. Slag wool fibers with shot content of 5.5, 5.8, 6.2, 6.8% and average diameter of 4.5, 4.9, 5.6, 6.4 μm for four samples were successfully produced, respectively. Total energy consumption and production costs decreased by 50-70% compared to traditional cupola furnace method. This method provides an energy-saving and emission-reduction technology for the direct utilization of molten blast furnace slag.
机译:在高炉附近对熔融高炉渣直接改性和生产高酸度系数炉渣羊毛纤维的中试进行了研究。从高炉排出的熔融高炉矿渣然后直接流入专用的改性炉,同时将石英作为改性剂添加到熔融炉渣中。将改性的熔渣电加热至1500至1550℃,然后通过高速离心法将熔体制成熔渣羊毛纤维。研究了酸度系数为1.2、1.4、1.6和1.8的熔体,并生产了具有相应酸度系数的纤维。分别成功生产出了四个样品的渣含量分别为5.5、5.8、6.2、6.8%和平均直径为4.5、4.9、5.6、6.4μm的矿渣毛纤维。与传统冲天炉法相比,总能耗和生产成本降低了50-70%。该方法为直接利用熔融高炉矿渣提供了节能减排技术。

著录项

  • 来源
  • 会议地点 Phoenix(US)
  • 作者单位

    School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China,State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;

    School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;

    School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China,State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;

    School of Metallurgy and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China,State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing 100083, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Blast furnace slag; Modification; Slag wool fibers High acidity coefficient;

    机译:高炉矿渣;修改;矿渣毛纤维高酸度系数;

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