东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (11): 1601-1604.DOI: 10.12068/j.issn.1005-3026.2015.11.018

• 材料与冶金 • 上一篇    下一篇

尾矿改性高炉渣的凝固行为与黏度行为

李杰1, 刘卫星2, 张玉柱1,2, 赵凯2   

  1. (1. 东北大学 材料与冶金学院, 辽宁 沈阳110819; 2. 华北理工大学 现代冶金技术教育部重点实验室, 河北 唐山063009)
  • 收稿日期:2014-11-10 修回日期:2014-11-10 出版日期:2015-11-15 发布日期:2015-11-10
  • 通讯作者: 李杰
  • 作者简介:李杰(1982-),男,河北灵寿人,东北大学博士研究生; 张玉柱(1956-),男,河北南皮人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51474090); 河北省应用基础研究重点项目(14963808D).

Solidification Behaviour and Viscosity Behaviour of Blast Furnace Slag Modified by Tailings

LI Jie 1, LIU Wei-xing2, ZHANG Yu-zhu1,2, ZHAO Kai 2   

  1. 1.School of Materials & Metallurgy, Northeastern University, Shenyang 110819, China; 2. The Key Laboratory with Modern Metallurgical Technology, Ministry of Education, North China University of Science and Technology, Tangshan 063009, China.
  • Received:2014-11-10 Revised:2014-11-10 Online:2015-11-15 Published:2015-11-10
  • Contact: ZHANG Yu-zhu
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摘要: 通过在高炉渣中加入不同质量分数的尾矿作为改性剂,研究了改性熔渣的凝固行为和黏度行为.采用X射线衍射和偏光显微镜研究了熔渣的矿物组成和显微结构,采用熔体物性测定仪研究了熔渣在1200℃到1475℃的黏度.结果表明:配加尾矿后,熔渣的酸度系数(Mk)达到1.2~1.8时,熔渣凝固后呈现非晶/玻璃质的特征;显微结构除Mk=1.8以外,均为致密均匀的结构.此外,熔渣成纤适宜的温度区间显著增大,尾矿适宜的配比为16.98%~34.18%.

关键词: 高炉渣, 矿物组成, 显微结构, 黏度

Abstract: Tailings of different mass fractions were added into the blast furnace slag (BF slag) as the modifier, and the solidification behaviour and viscosity behaviour of the modified molten slag were studied. Mineral composition and microstructure of the modified molten slag were analyzed by X-ray diffraction (XRD) and polarizing microscope. The viscosity curves between 1200℃ and 1475℃ were studied by synthetic test instrument for the physical characteristics. The results indicated that when the acidity coefficient (Mk) of the molten slag reaches 1.2~1.8 after adding tailings, the solidification structure of the molten slag has mainly an amorphous/vitreous character, and the microstructure is a compact and uniform structure except for Mk=1.8. In addition, the suitable temperature range for melting fabrication is significantly increased. The appropriate mass fraction of tailings is 16.98%~34.18%.

Key words: blast furnace slag, mineral composition, microstructure, viscosity

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