| The solubility of the five melt salt: NaF+NaCl, NaCl+cryolite, NaCl+NaF+cryolite, Na3PO3+NaF+NaCl, Na3PO3+NaCl+cryolite were investigated. The results show that the biggest solubility of the five melt salt was 1.2%, 1.9%, 2.1%, 1.09%, 6.04% one by one, which was laid a foundation for electrolyzing magnesia. |