A green and effective electrolytic process was developed to produce high-purity Mg metal using primary and secondary resources containing MgO as a feedstock. The electrolysis of various MgO resources was conducted using a Cu cathode in MgF₂ – LiF – KCl molten salt at 1043 K by applying an average current of 1.44 A for 12.5 h. The electrolysis of calcined North Korean magnesite and seawater MgO clinker yielded Mg alloys of MgCu₂ and (Cu) phases with current efficiencies of 89.6–92.4%. The electrolysis of oxidized MgO-C refractory brick, aged ferronickel slag, and ferronickel slag yielded Mg alloys of MgCu₂ and (Cu) phases with current efficiencies of 59.3–92.3%. The vacuum distillation of Mg alloys obtained was conducted at 1300 K for 10 h to produce high-purity Mg metal. After vacuum distillation, Mg metal with a purity of above 99.994% was obtained. Therefore, this study demonstrates the feasibility of the production of high-purity Mg metal from various MgO resources using a novel electrolytic process with a Cu cathode, followed by vacuum distillation.

开发了一种绿色有效的电解工艺，以使用含 MgO 的初级和次级资源作为原料来生产高纯度金属镁。_{各种 MgO 资源的电解使用 Cu 阴极在 MgF 2} - LiF - KCl 熔盐中在 1043 K 通过施加 1.44 A 的平均电流 12.5 小时进行。煅烧朝鲜菱镁矿和海水 MgO 熟料的电解产生了 MgCu ₂和 (Cu) 相的镁合金，电流效率为 89.6–92.4%。氧化MgO-C耐火砖、时效镍铁渣和镍铁渣电解生成MgCu _2镁合金和 (Cu) 相，电流效率为 59.3–92.3%。将获得的镁合金在 1300 K 下进行真空蒸馏 10 小时，以生产高纯度镁金属。减压蒸馏后得到纯度99.994%以上的金属镁。因此，本研究证明了使用带有 Cu 阴极的新型电解工艺，然后进行真空蒸馏，从各种 MgO 资源生产高纯度 Mg 金属的可行性。