Abstract
The effect of boron mud and CaF2, which were used as fluxing agents, on surface tension and density of CaO-SiO2-B2O3 ternary slag systems was investigated. The surface tension and density were measured by using the ring detachment method and Archimedean method, respectively. The results indicated that surface tension and density of the slag systems decreased with increasing temperature in the range of 1380—1480 °C. When 5%—10% CaF2 was employed as fluxing agent, the surface tension and density of slag were decreased with increasing CaF2 content, and the surface tension changed from 0.3 to 0.6 N/m, while the density changed from 3.4 to 4.1 g/cm3. However, when using 5%—10% boron mud as fluxing agent, the surface tension was enhanced, whereas the density decreased with the increase of boron mud content, and the variation range was 0.4—0.6 N/m for surface tension and 3.2—3.9 g/cm3 for the density. As a conclusion, using boron mud as fluxing agent to substitute for CaF2 did not cause significant changes in slag surface tension and density.
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