The Physical Properties of Slags for Electro-slag Remelting in CaF2-CaO-Al2O3-SiO2 System
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Xiaohua Wang
,
Chen Yan
Abstract
It is an effective way to decrease power consumption, pollution emission, to increase productivity and improve ingot quality by using lower CaF2 content even CaF2 free slag during the electro-slag remelting (ESR) process. In this study, a conventional slag, namely ANF-8 with composition of 60 mass%CaF2-20 mass%CaO-20 mass%Al2O3 was chosen as a reference slag. A new quaternary slag system of CaF2-CaO-Al2O3-SiO2 with four lower CaF2 content levels in mass fraction, 59%, 55%, 50%, 45% were prepared and labeled as S1, S2, S3 and S4 respectively. The effects of CaF2 content and temperature on the physical properties of the slag were investigated. The results showed that the melting points and the conductivity of the samples S1–S4 were all lower than those of the sample ANF-8. The melting point and the conductivity (1600 °C) of Sample S4 achieved 1372 °C and 1.936 Ω−1·cm−1, respectively. The conductivities of Sample S4 at 1550–1650 °C reached 1.741–2.131 Ω−1·cm−1, and were lower than those of ANF-8 and S1–S3. Considering the physical properties of the four new slags in the CaF2-CaO-Al2O3-SiO2 quaternary system and low CaF2 in the slag to decrease the power consumption and pollution emission, the slag S4 was the most suitable for the ESR process.
©[2013] by Walter de Gruyter Berlin Boston
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- Freeze-lining Formation and Microstructure in a Direct-to-blister Flash Smelting Slag
- The Mechanism of Dross Formation during Hot-dip Al-Zn Alloy Coating Process
- Solidification Behaviour of Slags: The Single Hot Thermocouple Technique
- Investigation of Continuous Casting Slag Films Sampled on Site and Comparison with Laboratory Results
- Thermal Conductivity of R-Na2O-SiO2 (R = Al2O3, CaO) Melts
- Investigation of Blowing High Silicon Hot Metal by Double Slag Process
- An Investigation of Electro-deoxidation Process for Producing Titanium from Dense Titanium Dioxide Cathode
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Articles in the same Issue
- Masthead
- Effect of Some Lubricants on the Flow Characteristics of ‘EPDM’ Rubber Under Compressive Load
- Friction Stir Welds of AA6351-T6 and AA2024-T6 Dissimiler Aluminium Alloys
- Effect of Welding Parameters on Pitting Corrosion Rate in 3.5N NaCl of Pulsed Current Micro Plasma Arc Welded AISI 304L Sheets
- An Investigation of Flank Wear Land Inclination in Orthogonal Machining
- Modeling of Radial Over Cut in Electrochemical Machining of Al-B4C MMC Using Response Surface Methodology
- Fundamental Research on a Rational Steelmaking Slag Recycling System by Phosphorus Separation and Collection
- KTH Steel Scrap Model – Iron and Steel Flow in the Swedish Society 1889–2010
- Direct Electrochemical Reduction of Titanium-Bearing Compounds to Titanium-Silicon Alloys in Molten Calcium Chloride
- In Situ Observation of the Evolution of Intragranular Acicular Ferrite at Mg-containing Inclusions in 16Mn Steel
- The Physical Properties of Slags for Electro-slag Remelting in CaF2-CaO-Al2O3-SiO2 System
- Freeze-lining Formation and Microstructure in a Direct-to-blister Flash Smelting Slag
- The Mechanism of Dross Formation during Hot-dip Al-Zn Alloy Coating Process
- Solidification Behaviour of Slags: The Single Hot Thermocouple Technique
- Investigation of Continuous Casting Slag Films Sampled on Site and Comparison with Laboratory Results
- Thermal Conductivity of R-Na2O-SiO2 (R = Al2O3, CaO) Melts
- Investigation of Blowing High Silicon Hot Metal by Double Slag Process
- An Investigation of Electro-deoxidation Process for Producing Titanium from Dense Titanium Dioxide Cathode
- Interaction between Molten Steel, Alumina Lining Refractory and Slag Phase
