Study on Conductivity of Molten Mold Flux

To investigate the effect of electromagnetic field on molten mold flux, the electrical conductivity of the CaO–SiO2–Al2O3–MgO–CaF2–Na2O system was tested by the AC four-electrode method, and the influencing factors and change in the law of conductivity of the molten mold flux was analyzed. The results show that the conductivity of molten mold flux increases with the increasing content of Na2O, CaF2, and other components, and the basicity of mold flux. In this work, the electrical conductivity of the molten mold flux is approximately 0.026–0.810 Ω−1 cm−1. For every 0.1 increase in optical basicity, the conductivity increases by about 58.7%. As the temperature increases every 25 K, the conductivity increases by about 27.2%.KeywordsMolten mold fluxesElectrical conductivityAC four-electrode method