| 磷在CaO-SiO2-FetO-P2O5与2CaO·SiO2颗粒界面间的传质行为 |
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| 引用本文： | 豆晓飞,祝明妹,林天成,王雨,谢兵,朱斌,周宏.磷在CaO-SiO2-FetO-P2O5与2CaO·SiO2颗粒界面间的传质行为[J].重庆大学学报(自然科学版),2015,38(5):78-82. |
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| 作者姓名： | 豆晓飞 祝明妹 林天成 王雨 谢兵 朱斌 周宏 |
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| 作者单位： | 1. 重庆大学 材料科学与工程学院,重庆,400044;2. 重庆大学 材料科学与工程学院，重庆 400044; 重庆钢铁集团公司，重庆 400080;3. 重庆钢铁集团公司,重庆,400080 |
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| 基金项目： | 重庆市博士后特别资助项目(NO.XM201326)；中国博士后基金资助项目(NO.2013M542259)。 |
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| 摘 要： | 对2CaO·SiO2(C2S)颗粒与C2S饱和的CaO-SiO2-FetO-P2O5渣在1 500℃下的反应进行了实验研究,采用SEM/EDS观测了C2S颗粒与熔渣界面之间不同位置各成分的含量变化,讨论了磷在C2S颗粒与熔渣界面间的传质行为。结果表明,在C2S颗粒与其周围熔渣形成的固液两相区内生成了n·2CaO·SiO2-3CaO·P2O5(nC2S-C3P)固溶体。随着反应时间的延长,nC2SC3P固溶体层越来越厚,在指向C2S颗粒内部方向,nC2S-C3P固溶体层中的磷含量逐渐降低。了解磷在C2S与熔渣界面间的传质行为,有助于CaO-SiO2-FetO-P2O5中nC2S-C3P固溶体形成机理的研究。
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| 关 键 词： | 2CaO·SiO2 CaO-SiO2-FetO-P2O5 铁水脱磷 n·2CaO·SiO2-3CaO·P2O5 固溶体 传质行为 |
| 收稿时间： | 2015/5/20 0:00:00 |
Behavior of phosphorus transfer from CaO-SiO2-FetO-P2O5 slags to 2CaO·SiO2 particles |
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| DOU Xiaofei,ZHU Mingmei,LIN Tiancheng,WANG Yu,XIE Bing,ZHU Bin and ZHOU Hong.Behavior of phosphorus transfer from CaO-SiO2-FetO-P2O5 slags to 2CaO·SiO2 particles[J].Journal of Chongqing University(Natural Science Edition),2015,38(5):78-82. |
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| Authors: | DOU Xiaofei ZHU Mingmei LIN Tiancheng WANG Yu XIE Bing ZHU Bin and ZHOU Hong |
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| Institution: | College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P.R.China,College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P.R.China; Chongqing Iron and Steel Group Corporation, Chongqing 400080, P.R.China,College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P.R.China,College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P.R.China,College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P.R.China,College of Materials Science and Engineering, Chongqing University, Chongqing 400044, P.R.China; Chongqing Iron and Steel Group Corporation, Chongqing 400080, P.R.China and Chongqing Iron and Steel Group Corporation, Chongqing 400080, P.R.China |
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| Abstract: | In this paper,the behavior of phosphorus transfer from CaO-SiO2-Fet O-P2 O5 slags to 2CaO · SiO2 (C2 S)particles is investigated.The reaction between C2 S particles and the slag saturated C2 S is conducted at 1 500℃ in laboratory.Ingredients at different positions on the interface between C2 S particles and the slag are observed and analyzed by SEM/EDS and the phosphorous transfer behavior is discussed.The result shows that C2 S particles react with the particles surrounded molten slag in the solid-liquid two phase zone and forms then·2CaO·SiO2-3CaO·P2O5 (nC2S-C3P)solid solution.With the reaction time progressing,the thickness ofnC2S-C3P solid solution layer increases.In the direction to the inside of C2 S particles,the phosphorus content in the nC2 S-C3 P layer decreases.Knowing the behavior of phosphorus transfer from CaO-SiO2-Fet O-P2 O5 slags to C2 S phase is helpful to study the formation mechanism ofnC2 S-C3 P in the slags. |
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| Keywords: | 2CaO·SiO2 particles CaO-SiO2-FetO-P2 O5 slags hot metal dephosphorization 2CaO· SiO2-3CaO·P2 O5 solid solution behavior of phosphorus transfer |
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