工程科学学报，第40卷，第10期：1139-1157,2018年10月 Chinese Journal of Engineering,Vol.40,No.10:1139-1157,October 2018 DOI:10.13374/j.issn2095-9389.2018.10.001;http://journals.ustb.edu.cn 钢铁治金过程中的界面现象 程礼梅)，张立峰)四，沈平2) 1)北京科技大学冶金与生态工程学院，北京1000832)上海大学材料科学与工程学院，上海200072 区通信作者，E-mail:Zhanglifeng@usth.cdu.cn 摘要从界面润湿性的角度，对一些治炼过程中的常见界面现象进行了详细分析.对于渣的泡沫化过程，主要分析了润湿 性对渣的泡沫化指数的影响：对于铁水和钢液脱硫过程，主要分析了对脱硫速率和脱硫剂的利用率以及穿透钢液速率的影 响：对于钢液与熔渣对耐火材料的侵蚀过程，主要分析了对耐火材料在熔渣中的饱和溶解度、熔渣在耐火材料中的侵蚀深度 以及耐火材料的侵蚀速率的影响：对于钢中夹杂物的运动过程，主要分析了对钢中夹杂物的形核、聚集、去除、空间分布等影 响.同时，本文总结得出了对于这些实际治炼过程有利的界面润湿性 关键词润湿性：泡沫渣：耐火材料侵蚀；夹杂物形核：夹杂物去除 分类号TF4 Interfacial phenomena in ironmaking and steelmaking CHENG Li-mei),ZHANG Li-feng,SHEN Ping2) 1)School of Metallurgical and Ecological Engineering,University of Science and Technology Beijing,Beijing 100083,China 2)School of Material Science and Engineering,University of Shanghai,Shanghai 200072,China Corresponding author,E-mail:Zhanglifeng@ustb.edu.cn ABSTRACT A number of important links in the metallurgical production process are related to interface phenomena,including slag foaming,hot metal desulphurization,refractory erosion,converter blowing,the behavior of inclusions in steel,and so on.Interfacial wettability is an important aspect of the interfacial interaction.By controlling the interfacial wettability between two phases,it is possi- ble to remove inclusions,improve the cleanliness of the molten steel,reduce erosion of the refractory material,improve the life of the lining material,and ensure smooth production and product quality.Thus,it is necessary to analyze interfacial phenomena in ironmak- ing and steelmaking with respect to interfacial wettability.In general,interfacial wettability can be measured by the contact angle and interfacial tension,and the contact angle and interfacial tension between the molten steel and slag are determined primarily by the sur- face active element in molten steel and the active surface component in slag.In this study,we analyzed in detail some common phe- nomena in the steelmaking process from the view of interfacial wettability.With respect to the slag foaming process,we mainly analyzed the effects of the contact angle and interfacial tension on the slag foaming index.To study the hot metal desulphurization process,we considered effects on the desulfurization rate and the utilization and penetration speed of the desulfurizing agent.Regarding the refracto- ry erosion process by molten slag and steel,we primarily studied the effects on the refractory saturation slubility in molten slag,the penetration depth of molten slag in refractory material,and the refractory erosion rate.To study the behavior of inclusions in steel,we considered effects on the nucleation,aggregation,removal,and spatial distribution homogeneity of inclusions.We also summarized the conditions associated with better interfacial wettability with respect to the corresponding phenomena. KEY WORDS wettability;slag foaming;refractory erosion;inclusion nucleation;inclusion removal 收稿日期：2017-10-11 基金项目：国家自然科学基金资助项目(51725402,51504020和51704018)工程科学学报,第 40 卷,第 10 期:1139鄄鄄1157,2018 年 10 月 Chinese Journal of Engineering, Vol. 40, No. 10: 1139鄄鄄1157, October 2018 DOI: 10. 13374 / j. issn2095鄄鄄9389. 2018. 10. 001; http: / / journals. ustb. edu. cn 钢铁冶金过程中的界面现象 程礼梅1) , 张立峰1) 苣 , 沈 平2) 1) 北京科技大学冶金与生态工程学院, 北京 100083 2) 上海大学材料科学与工程学院, 上海 200072 苣通信作者, E鄄mail: Zhanglifeng@ ustb. edu. cn 摘 要 从界面润湿性的角度,对一些冶炼过程中的常见界面现象进行了详细分析. 对于渣的泡沫化过程,主要分析了润湿 性对渣的泡沫化指数的影响;对于铁水和钢液脱硫过程,主要分析了对脱硫速率和脱硫剂的利用率以及穿透钢液速率的影 响;对于钢液与熔渣对耐火材料的侵蚀过程,主要分析了对耐火材料在熔渣中的饱和溶解度、熔渣在耐火材料中的侵蚀深度 以及耐火材料的侵蚀速率的影响;对于钢中夹杂物的运动过程,主要分析了对钢中夹杂物的形核、聚集、去除、空间分布等影 响. 同时,本文总结得出了对于这些实际冶炼过程有利的界面润湿性. 关键词 润湿性; 泡沫渣; 耐火材料侵蚀; 夹杂物形核; 夹杂物去除 分类号 TF4 收稿日期: 2017鄄鄄10鄄鄄11 基金项目: 国家自然科学基金资助项目(51725402,51504020 和 51704018) Interfacial phenomena in ironmaking and steelmaking CHENG Li鄄mei 1) , ZHANG Li鄄feng 1) 苣 , SHEN Ping 2) 1) School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China 2) School of Material Science and Engineering, University of Shanghai, Shanghai 200072, China 苣 Corresponding author, E鄄mail: Zhanglifeng@ ustb. edu. cn ABSTRACT A number of important links in the metallurgical production process are related to interface phenomena, including slag foaming, hot metal desulphurization, refractory erosion, converter blowing, the behavior of inclusions in steel, and so on. Interfacial wettability is an important aspect of the interfacial interaction. By controlling the interfacial wettability between two phases, it is possi鄄 ble to remove inclusions, improve the cleanliness of the molten steel, reduce erosion of the refractory material, improve the life of the lining material, and ensure smooth production and product quality. Thus, it is necessary to analyze interfacial phenomena in ironmak鄄 ing and steelmaking with respect to interfacial wettability. In general, interfacial wettability can be measured by the contact angle and interfacial tension, and the contact angle and interfacial tension between the molten steel and slag are determined primarily by the sur鄄 face active element in molten steel and the active surface component in slag. In this study, we analyzed in detail some common phe鄄 nomena in the steelmaking process from the view of interfacial wettability. With respect to the slag foaming process, we mainly analyzed the effects of the contact angle and interfacial tension on the slag foaming index. To study the hot metal desulphurization process, we considered effects on the desulfurization rate and the utilization and penetration speed of the desulfurizing agent. Regarding the refracto鄄 ry erosion process by molten slag and steel, we primarily studied the effects on the refractory saturation slubility in molten slag, the penetration depth of molten slag in refractory material, and the refractory erosion rate. To study the behavior of inclusions in steel, we considered effects on the nucleation, aggregation, removal, and spatial distribution homogeneity of inclusions. We also summarized the conditions associated with better interfacial wettability with respect to the corresponding phenomena. KEY WORDS wettability; slag foaming; refractory erosion; inclusion nucleation; inclusion removal