Abstract
Activity of SiO 2 in SiO 2- Al 2O 3-CaO slag was measured in low SiO 2 level in order to provide a thermodynamic basis for the reaction between metal and slag. The activity of SiO 2 was measured by equilibrating C-saturated Fe-Si-melts and slags in a 1 atm CO gas atmosphere at 1,600°C. This was carried out by melting an Fe-C-Si alloy and SiO 2- Al 2O 3-CaO slag in a C crucible under a CO atmosphere. Weighted reagents were carefully mixed and placed in the C crucible. Mixed powder in the C crucible was heated above the melting temperature to induce convection current. After four hours, it was heated to 1,700°C and held for five minutes to increase the viscosity of the fluid to get an easy to pour out of the crucible. Fe-C-1%Si is prescribed close to the equilibrium composition with the slag to reach equilibrium in a short time.
Original language | English (US) |
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Pages (from-to) | 86-91 |
Number of pages | 6 |
Journal | Iron and Steel Technology |
Volume | 9 |
Issue number | 10 |
State | Published - Oct 2012 |
Externally published | Yes |
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry