东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2012, Vol. 33 ›› Issue (4): 555-558.DOI: -

• 论著 • 上一篇    下一篇

不同碱度精炼渣的冶金性能

邓志银;朱苗勇;钟保军;戴永刚;   

  1. 东北大学材料与冶金学院;邢台钢铁有限责任公司技术中心;
  • 收稿日期:2013-06-19 修回日期:2013-06-19 发布日期:2013-04-04
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    中央高校基本科研业务费专项资金资助项目(N100102001)

Metallurgical properties of refining slag with different basicities

Deng, Zhi-Yin (1); Zhu, Miao-Yong (1); Zhong, Bao-Jun (2); Dai, Yong-Gang (2)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China; (2) Technology Center, Xingtai Iron and Steel Co. Ltd., Xingtai 054027, China
  • Received:2013-06-19 Revised:2013-06-19 Published:2013-04-04
  • Contact: Zhu, M.-Y.
  • About author:-
  • Supported by:
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摘要： 通过工业实验,采用气体分析、成分分析和SEM等方法研究了4种不同精炼渣系的脱氧、脱硫和控制夹杂物形态的能力.实验结果表明:相比Al2O3质量分数对脱氧能力的影响,碱度的影响表现更明显.碱度越高越有利于脱氧,当碱度约为4时(渣系3),精炼渣几乎达到最大脱氧能力.碱度越高脱硫能力越强,碱度约为1.5时,基本失去脱硫功能;碱度超过3.5时,随着碱度的增加,脱硫能力增加相对变缓.相对渣系4,采用渣系3后球状的钙铝酸盐夹杂物得到了一定程度的控制.对于要求控制钙铝酸盐夹杂物的35CrMo钢种,可以选择渣系3作为精炼渣系.

关键词: 精炼渣, 脱氧, 脱硫, 硫分配系数, 夹杂物

Abstract: Based on industrial tests, the deoxidation and desulfurization capabilities and inclusion control performance of 4 refining slags were studied with gas analysis, composition analysis and SEM examination. The results showed that the effect of slag basicity on deoxidation capability is greater than that of Al2O3 mass fraction. The higher the basicity is, the greater the deoxidation capability of the slag is. The deoxidation capability reaches almost the maximum when the basicity is about 4 (slag 3). For desulphurization, the higher the basicity is, the greater the desulphurization capability of the slag is. The desulphurization capability will be lost when the slag basicity decreases to about 1. 5. The increase of desulphurization capability with basicity of slag becomes slower at basicity above 3. 5. Compared with slag 4, slag 3 can control the calcium aluminate inclusions to certain extent, and it can thus be selected as refining slag for 35CrMo.

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