东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (3): 365-368.DOI: -

• 论著 • 上一篇    下一篇

改善含MgO铁矿石软熔性能的研究

姜鑫;吴钢生;李光森;沈峰满;   

  1. 东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学材料与冶金学院 辽宁沈阳110004;辽宁沈阳110004;包头钢铁(集团)公司;内蒙古包头014010;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-03-15 发布日期:2013-06-24
  • 通讯作者: Jiang, X.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50474014)

Study on improving the softening-melting properties of MgO-bearing iron ores

Jiang, Xin (1); Wu, Gang-Sheng (1); Li, Guang-Sen (1); Shen, Feng-Man (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) Iron and Steel (Group) Company of Baotou, Baotou 014010, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-03-15 Published:2013-06-24
  • Contact: Jiang, X.
  • About author:-
  • Supported by:
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摘要： 为了改善铁矿石的高温软熔性能,重点研究了在保证炉渣中MgO含量的同时,向高炉合理添加MgO的几种方法,提出了从风口喷吹含MgO煤粉的高炉炼铁新工艺的建议.试验结果表明,减少MgO含量,可降低烧结矿的软熔带温度区间.采用合理的炉料结构,如低MgO烧结矿配加菱镁石块工艺,高MgO烧结矿配加酸性球团矿工艺等均可改善烧结矿的高温软熔性能.实验室条件下,低MgO烧结矿配加菱镁石块工艺和高MgO烧结矿配加酸性球团矿工艺,分别可使炉料软熔带温度区间降低20~30℃和50~100℃.

关键词: 高炉, MgO, 软熔性能, 烧结矿, 球团矿

Abstract: To improve the softening-melting properties of iron ores, some measures are suggested to take to add properly MgO in BF operation especially the new process in which the MgO-bearing pulverized coal is injected from tuyere under the condition that the MgO content in slag should be kept up. Experimental results showed that the decrease in MgO content may decrease the temperature range in softening-melting zone of the sinter. To improve the softening-melting properties of the sinter, the structure of furnace charge is suggested to change reasonably, mixing the low-MgO-content sinter with magnesite or high-MgO-content sinter with acidic pellet. The former and latter can decrease the temperature range of the softening-melting zone of furnace charge by 20-30°C and 50-100°C, respectively.

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