东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (2): 212-216.DOI: 10.12068/j.issn.1005-3026.2020.02.011

• 材料与冶金 • 上一篇    下一篇

气淬法粒化高炉渣实验研究

康月1, 刘超2, 张玉柱1,2, 姜茂发1   

  1. (1. 东北大学 冶金学院, 辽宁 沈阳110819; 2. 华北理工大学 冶金与能源学院, 河北 唐山063009)
  • 收稿日期:2019-07-25 修回日期:2019-07-25 出版日期:2020-02-15 发布日期:2020-03-06
  • 通讯作者: 康月
  • 作者简介:康 月(1989- ),女,河北衡水人,东北大学博士研究生; 张玉柱(1956-),男,河北南皮人,华北理工大学教授,博士生导师; 姜茂发(1955-),男,山东栖霞人,东北大学教授,博士生导师.冯明杰(1971-), 男, 河南禹州人, 东北大学副教授; 王恩刚(1962-), 男, 辽宁沈阳人, 东北大学教授,博士生导师.
  • 基金资助:
    河北省重点研发计划项目(19273806D).

Experimental Study on Granulation of Blast Furnace Slag by Gas Quenching

KANG Yue1, LIU Chao2, ZHANG Yu-zhu1,2, JIANG Mao-fa1   

  1. 1. School of Metallurgy, Northeastern University, Shenyang 110819, China; 2. College of Metallurgy and Energy, North China University of Science and Technology, Tangshan 063009, China.
  • Received:2019-07-25 Revised:2019-07-25 Online:2020-02-15 Published:2020-03-06
  • Contact: LIU Chao
  • About author:-
  • Supported by:
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摘要: 为了有效利用高炉渣余热,提高炉渣附加值,采用干式处理方法——气淬法,对高炉渣进行粒化,研究碱度和喷吹气体压力对成珠率、渣珠平均直径和粒径分布的影响规律.结果表明:成珠率随碱度的增加呈先增加后降低的趋势,碱度1.2时获得最高成珠率;渣珠的平均直径随碱度的增加先减小后增大,碱度超过1.2后,平均粒径显著增大;随喷吹压力的增加,成珠率呈先增加后减小之后又增加的趋势,压力为0.2MPa时成珠率最高;渣珠平均直径基本呈逐渐减小趋势并且减小趋势变缓;渣珠粒径集中分布在1~2.5mm之间,基本呈正态分布,分布较均匀.

关键词: 气淬, 高炉渣, 碱度, 喷吹压力, 成珠率, 平均直径

Abstract: To effectively utilize waste heat from blast furnace slag(BFS)and increase the additional value of slag, the BFS is granulated using the dry treatment(gas quenching) method. The effects of basicity and nozzle pressure on bead formation rate, mean diameter and particle size distribution of slag beads are studied. The results show that with the increases of basicity, the bead formation rate firstly increases up to the highest rate at the basicity of 1.2 and then decreases. The mean diameter firstly decreases and then increases with the basicity, especially, when the basicity is over 1.2. With the nozzle pressure increasing, the bead formation rate firstly increases, followed by a drop and then raise again. The bead formation rate reaches the highest value at the pressure of 0.2MPa. The mean diameter of the slag beads decreases gradually and the decreasing tendency slows down when the pressure is larger than 0.3MPa. The particle size distribution of slag beads mainly ranges in 1~2.5mm, satisfying the Gaussian distribution basically.

Key words: gas quenching, blast furnace slag, basicity, nozzle pressure, bead formation rate, mean diameter

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