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Effect of CaF2 on Phosphorus Refining from Molten Steel by Electric Arc Furnace Slag using Direct Reduced Iron (DRI) as a Raw Material
- Source :
- Metallurgical and Materials Transactions B. 51:3028-3038
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- The effect of CaF2 addition on dephosphorization reaction between molten steel and electric arc furnace (EAF) slag using direct reduced iron (DRI) at 1823 K (1550 °C) was investigated. Basicity, the thermodynamic parameter affecting the removal capacity of phosphorus (i.e., phosphate capacity), decreased using DRI due to an increased SiO2 concentration in the slag. To minimize slag volume and maximize dephosphorization efficiency, the CaF2 was added to the slag. As CaF2 content increased (0 to 10 mass pct), dephosphorization efficiency also increased. Thermodynamic analysis in conjunction with slag structural studies using Raman spectroscopy were conducted to explain the complicated phenomena. The results exhibited that even 5 to 6 mass pct CaF2 can improve the dephosphorization efficiency when DRI is used as raw material in an EAF process.
- Subjects :
- 010302 applied physics
Materials science
Structural material
Phosphorus
Metallurgy
0211 other engineering and technologies
Metals and Alloys
Slag
chemistry.chemical_element
02 engineering and technology
Raw material
Direct reduced iron
Condensed Matter Physics
01 natural sciences
Volume (thermodynamics)
chemistry
Mechanics of Materials
visual_art
0103 physical sciences
Materials Chemistry
visual_art.visual_art_medium
021102 mining & metallurgy
Refining (metallurgy)
Electric arc furnace
Subjects
Details
- ISSN :
- 15431916 and 10735615
- Volume :
- 51
- Database :
- OpenAIRE
- Journal :
- Metallurgical and Materials Transactions B
- Accession number :
- edsair.doi...........a34c2631ea5c97c0799eecec6f61884a