Effect of B2O3 content on the viscosity of copper slag

被引：34
|
作者：
Shi, Yu [1 ,2 ]
Wei, Yonggang [1 ,2 ]
Zhou, Shiwei [1 ,2 ]
Li, Bo [1 ,2 ]
Yang, Yindong [3 ]
Wang, Hua [1 ]
机构：
[1] Kunming Univ Sci & Technol, State Key Lab Complex Nonferrous Met Resources Cl, Kunming 650093, Yunnan, Peoples R China
[2] Kunming Univ Sci & Technol, Fac Met & Energy Engn, Kunming 650093, Yunnan, Peoples R China
[3] Univ Toronto, Dept Mat Sci & Engn, Toronto, ON M5S3E4, Canada
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 822卷
基金：
中国国家自然科学基金;
关键词：
Copper slag; B2O3; Viscosity; FTIR; Microstructure; FactSage; SMELTER SLAGS; TEMPERATURE; RECOVERY; MATTE; ENTRAINMENT; REDUCTION; BEHAVIOR; LOSSES; WASTE; MELTS;
D O I：
10.1016/j.jallcom.2019.153478
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Suitable additives can improve the viscosity characteristics of copper slag, thereby improving slag-copper separation. In this study, the effects of B2O3 on the performance of copper slag were studied. The results showed that when the content of B2O3 addition was increased from 0 to 4%, the viscosity of the copper slag decreased, and the activation energy of viscous flows decreased. B2O3 could act as a network modifier to simplify the Si-O-Si tetrahedral structure, as verified by an FTIR analysis. In addition, the microstructure of fayalite in the copper slag changed from dendritic to granular with the increase in B2O3 content. B2O3 could form low-melting-point eutectics with high-melting-point components in the slag, which effectively reduced the liquidus temperature and viscosity of slag. (C) 2019 Elsevier B.V. All rights reserved.
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页数：7
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