The influence of CaF2 on the thermodynamic behavior of carbon in the CaO-Al2O3-CaF2 slag at 1773 K was investigated on the basis of carbide capacity concept. The carbide capacity increases with increasing CaF2 content up to about 25mol%, followed by nearly constant value in the CaOsatd-Al2O 3-CaF2 system. The capacity in the CaO-Al 2O3-CaF2 (44-49 mol% CaO) system rapidly increases by increasing the XCaF2/XAl2O3 ratio up to about unity, and then the capacity-increasing rate decreases at XCaF2/ XAl2O3≥1. The carbide capacity increases with an increase of CaO/Al2O3 ratio at a fixed CaF2 content; also, the addition of CaF2 greater than about 14mol% would have no effect on capacity regardless of CaO/Al2O3 ratio. The iso-carbide capacities obtained in the present work are very similar to the iso-sulfide capacities available in the literature.
All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry