东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (9): 1261-1264.DOI: -

• 材料与冶金 • 上一篇    下一篇

LF精炼废渣中硫赋存形式的研究

吕宁宁1，于景坤1，苏畅1，王洪章2   

  1. (1东北大学 材料与冶金学院，辽宁沈阳110819；2沈阳东大冶金科技股份有限公司，辽宁沈阳110819)
  • 收稿日期:2013-03-19 修回日期:2013-03-19 出版日期:2013-09-15 发布日期:2013-04-22
  • 通讯作者: 吕宁宁
  • 作者简介:吕宁宁(1985-)，男，山东莱芜人，东北大学博士研究生；于景坤(1960-)，男，辽宁康平人，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(51274059).

Research on the Occurrence Form of Sulfur in LF Refining Slag

LYU Ningning1， YU Jingkun1， SU Chang1， WANG Hongzhang2   

  1. 1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China; 2. Northeastern University Metallurgical Technology Institute Co.Ltd.， Shenyang 110819， China.
  • Received:2013-03-19 Revised:2013-03-19 Online:2013-09-15 Published:2013-04-22
  • Contact: YU Jingkun
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摘要： 以CaO，SiO2和A12O3为主要原料，分别制备了CaO-A12O3二元和CaO-SiO2-A12O3三元渣样，分析了炉渣通过水冷及随炉冷却时渣中硫的赋存形式.研究结果表明:在12CaO·7A12O3为基体的CaO-A12O3二元渣中，硫在水冷及随炉冷却时主要以11CaO·7A12O3·CaS固溶体的形式存在；在CaO-SiO2-A12O3三元渣中，当A12O3的含量较低时，硫在水冷及随炉冷却时均以CaS的形式存在；当A12O3的含量较高时，硫在水冷时以CaS的形式存在，但在随炉冷却时则以11CaO·7A12O3·CaS固溶体的形式存在.通过改变成分和冷却方式可以控制精炼废渣中硫的赋存形式.

关键词: 精炼废渣, 硫, 赋存形式, 固溶体, 水冷, 随炉冷却

Abstract: (CaOA12O3)slag and(CaOSiO2A12O3)slag were synthesized with CaO， SiO2 and A12O3 as main raw materials. The occurrence form of the sulfur in the slag under different cooling methods such as watercooling and furnacecooling was investigated. The results showed that 11CaO·7A12O3·CaS solid solution is the main occurrence form of sulfur in the CaOA12O3 slag with the substrate of 12CaO·7A12O3. However，in the CaOSiO2A12O3 slag， when the A12O3 content was low， sulfur existed in the form of CaS single phase in both water and furnace cooling processes， while the A12O3 content was high， sulfur existed in the form of CaS single phase when the slag was watercooled， while when the slag was furnace cooled， the sulfur existed in the form of 11CaO·7A12O3·CaS solid solution. The occurrence form of sulfur in LF refining slags can be controlled by changing the cooling method and the composition of the slag.

Key words: refining slag, sulfur, occurrence form, solid solution, watercooling, furnacecooling

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