东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (4): 567-570.DOI: -

• 论著 • 上一篇    下一篇

添加剂对石灰含硼高硅高硫铁水脱硫的影响

杨中东;薛向欣;刘奇;刘素兰;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-04-15 发布日期:2013-06-22
  • 通讯作者: Yang, Z.-D.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2006AA03Z529);;

Effect of additive agents on lime desulfurization of boron-containing molten iron with high silicon/sulfur content

Yang, Zhong-Dong (1); Xue, Xiang-Xin (1); Liu, Qi (1); Liu, Su-Lan (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-04-15 Published:2013-06-22
  • Contact: Yang, Z.-D.
  • About author:-
  • Supported by:
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摘要： 采用喷吹方法,研究了添加剂对活性石灰脱硫的影响.结果表明,当铁水中添加0.1%Al,活性石灰用量仅为13 kg/t时,即可使硫质量分数从0.1%降至0.005%;铁水中添加Al后石灰界面反应层主要由铝酸钙、铁酸钙及硫化钙组成,在1 400℃实验温度下为熔融态,有利于硫的扩散;当活性石灰中添加25%CaCO3,3%CaF2粉,石灰用量为15 kg/t时,也能使硫质量分数从0.1%降至0.01%以下;含硼铁水温度高是采用活性石灰脱硫的有利条件.

关键词: 含硼铁水, 高硅高硫, 喷吹, 脱硫, 添加剂

Abstract: The effect of additive agents on active lime desulfurization of boron-containing molten iron with high Si/S content was studied with injection method. The results showed that the sulfur content can be lowered from 0.1% to less than 0.005% by adding 0.1% Al and 13 kg/t active lime, and the interfacial reaction layer of lime is mainly composed of calcium aluminate, calcium ferrite and calcium sulfide-they are all in fusion state at 1400°C to benefit the diffusion of sulfur. Thus, the sulfur content decreases from 0.1% to below 0.01% if adding 25%CaCO3 and 3%CaF2 with 15 kg/t active lime. In this way, the high-temperature molten iron is the advantageous condition for lime desulfurization.

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