Effects of B2O3 on Melting Characteristics and Temperature-Dependent Viscosity of High-Basicity CaO-SiO2-FeOx-MgO Slag
Chong, Junkai; Shen, Yingying; Yang, Peng; Tian, Jianke; Zhang, Wenjuan; Tang, Xingchang; Du, Xueyan
2020-03
Source PublicationMATERIALS
Volume13Issue:5
AbstractIn order to reduce the amount of fluorite during the steelmaking process for environmental protection, it is essential to investigate the fluorine-free slag system. Thus, high-basicity CaO-SiO2-FeOx-MgO slag with B2O3 content from 0% to 15% was designed, and its melting characteristics and viscosity were investigated. The influence of B2O3 content on the phase diagram of the slag system was calculated using FactSage 7.3, and the break temperature was determined from the curves of temperature-dependent viscosity. The results show that, with the increase in B2O3 content, the melting characteristics of the CaO-SiO2-FeOx-MgO/B2O3 slag system, including liquidus temperature, flow temperature, softening temperature, and hemispheric temperature, all decreased; the main phase of the slag system transformed from Ca2SiO4 into borosilicate, and finally into borate; the viscous flow activation energy reduced from 690 kJ to 130 kJ; the break temperature reduced from 1590 degrees C to 1160 degrees C. Furthermore, the melting characteristics and the break temperature of the slag system with 5% and 8% B2O3 content were found to be the closest to the values of fluorine-containing steel slag.
Keywordmelting characteristics viscosity B2O3 break temperature CaO-SiO2-FeOx-MgO-B2O3 slag system
DOI10.3390/ma13051214
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation[51904139] ; Innovation Ability Improvement Project of Universities in Gansu Province[2019A-029]
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Multidisciplinary
WOS IDWOS:000524060200192
PublisherMDPI
Citation statistics
Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64230
Collection省部共建有色金属先进加工与再利用国家重点实验室
材料科学与工程学院
研究生院
Corresponding AuthorDu, Xueyan
AffiliationLanzhou Univ Technol, Sch Mat Sci & Engn, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
First Author AffilicationColl Mat Sci & Engn
Corresponding Author AffilicationColl Mat Sci & Engn
First Signature AffilicationColl Mat Sci & Engn
Recommended Citation
GB/T 7714
Chong, Junkai,Shen, Yingying,Yang, Peng,et al. Effects of B2O3 on Melting Characteristics and Temperature-Dependent Viscosity of High-Basicity CaO-SiO2-FeOx-MgO Slag[J]. MATERIALS,2020,13(5).
APA Chong, Junkai.,Shen, Yingying.,Yang, Peng.,Tian, Jianke.,Zhang, Wenjuan.,...&Du, Xueyan.(2020).Effects of B2O3 on Melting Characteristics and Temperature-Dependent Viscosity of High-Basicity CaO-SiO2-FeOx-MgO Slag.MATERIALS,13(5).
MLA Chong, Junkai,et al."Effects of B2O3 on Melting Characteristics and Temperature-Dependent Viscosity of High-Basicity CaO-SiO2-FeOx-MgO Slag".MATERIALS 13.5(2020).
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