Surface Tension and Related Ions Behavior of Silicate Melts of the Na2O-K2O-SiO2-CaF2 System under Ultrasonic Irradiation

被引：6
|
作者：
Min, Yi [1 ,2 ,3 ]
Jiao, Shiyan [1 ,3 ]
Zhang, Rui [1 ,3 ]
Jia, Jixiang [2 ]
Qi, Jie [1 ,3 ]
Liu, Chengjun [1 ,3 ]
机构：
[1] Minist Educ, Key Lab Ecol Met Multimetall Ores, Shenyang 110819, Liaoning, Peoples R China
[2] State Key Lab Met Mat Marine Equipment & Applicat, Anshan 114021, Liaoning, Peoples R China
[3] Northeastern Univ, Sch Met, Shenyang 110819, Liaoning, Peoples R China
来源：
ISIJ INTERNATIONAL | 2021年 / 61卷 / 03期
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
surface tension; melt structure; ion behavior; ultrasonic;
D O I：
10.2355/isijinternational.ISIJINT-2020-557
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Under ultrasonic irradiation, surface tension and structure of molten slags of Na2O-K2O-SiO2-CaF2 system were measured. Results showed that, the slags were degraded gradually with the increase of ultrasonic intensity and silica tetrahedron radicals with oxygen vacancies generated in the melts. In fluorine free slag, the dissociated radicals coordinate with free oxygen anions, which lead to the decrease of electrostatic force between ions and the related decrease of surface tension. While in fluorine bearing slag, the surface tension increases for the reason that the free fluorine anions dominate the behavior of coordination, which lead to the increase of electrostatic force between ions. The increase of surface tension will promote the down flow of mold flux between the gap of solidified steel shell and the mold copper wall, which will facilitate the lubrication between them.
引用
收藏
页码：1022 / 1028
页数：7
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