鋼鐵冶金過程中的界面潤濕性的基礎

程禮梅; 張立峰; 沈平

doi:10.13374/j.issn2095-9389.2018.12.002

鋼鐵冶金過程中的界面潤濕性的基礎

doi: 10.13374/j.issn2095-9389.2018.12.002

1) 北京科技大學冶金與生態工程學院, 北京 100083
2) 上海大學材料科學與工程學院, 上海 200444

基金項目:

國家重點研發計劃專項資助項目（2016YFB0300102，2017YFB0304001）

詳細信息

中圖分類號: TF4
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- 被引次數: 0
出版歷程
- 收稿日期: 2017-11-07

Fundamentals of interfacial wettability in ironmaking and steelmaking

1) School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, China
2) School of Material Science and Engineering, Shanghai University, Shanghai 200444, China

摘要

摘要: 首先介紹了界面張力和接觸角的基本概念，并總結了對于高溫體系，常見的界面張力以及接觸角的測量方法，重點對實驗過程中最常使用的座滴法進行了分析.在冶煉過程中，體系的組成，尤其是鋼液中的表面活性元素以及渣中的表面活性組分能顯著影響界面潤濕性，同時溫度對界面潤濕性的影響也不可忽略.因此系統分析了這兩個主要影響因素對界面潤濕性的影響.最后，總結了鋼鐵冶金過程中常見物質間的接觸角和界面張力.
- 界面現象 /
- 接觸角 /
- 界面張力 /
- 溫度 /
- 成分
Abstract: There are various interfacial phenomenona in ironmaking and steelmaking, including slag foaming, nucleation, aggregation, removal of inclusions in steel, and refractory corrosion. The slag-metal interface has a crucial influence on the mass transfer, energy transfer, and interfacial chemical reaction. Interfacial wettability is a very important aspect of the interfacial interaction, and studying it is essential to further understand the interfacial phenomenona. In general, the interfacial wettability can be measured by contact angle and interfacial tension. In studying interfacial phenomena, it is necessary to first measure various quantities of interfacial wettability such as surface tension, interfacial tension, and contact angle, on the same conditions of interfacial phenomena or processes. Improving the interfacial wettability can be beneficial to the control of melting and refining processes. For example, when the contact angle between the molten slag and inclusion in steel reduces and the surface tension of the molten slag increases, the adhesion between the molten slag and inclusion is stronger, and it becomes easier to remove the inclusions. Therefore, the basic concepts of contact angle and interfacial tension were first introduced in this paper. Furthermore, the common methods of measuring contact angle and surface tension in an elevated temperature system were summarized, especially for the sessile drop method, which is the mostly used in laboratory experiments. During steelmaking processes, the interfacial wettability is significantly influenced by the system compositions, especially the surface active elements in steel and the surface active composition in slag. Moreover, the influences of temperature are also considerable. Hence, the effects of these two main factors, compositions and temperature, on the interfacial wettability were analyzed in detail. Finally, the wettability among the common materials in steelmaking processes was summarized.
- interfacial phenomena /
- contact angle /
- interfacial tension /
- temperature /
- composition

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