LAUSR

The olivine crystals and borate containing slag were effectively separated from the CaO–SiO2–B2O3–MgO–Al2O3 system at an optimum precipitating temperature of olivine by utilizing supergravity. The borate containing slag melt went through the filter, whereas the olivine crystals with a larger size of 300 μm–2 500 μm were intercepted by the filter. Consequently, after super-gravity separation with G=900 at 1 463 K for 5 minutes, the mass fraction of B2O3 in separated borate containing slag was 30.17 wt%, while that of the separated olivine was only 0.009 wt%, and the recovery ratio of boron in separated borate containing slag thus was up to 99.97%.