MagnesiumMagnesium, with its superior stiffness-to-weight and strengthStrength-to-weight ratios, offers a lower-weight alternative to aluminumAluminum, but traditional production methods remain energy-intensive. This work presents new developments in Gravity-Driven Multiple Effect Thermal System (G-METS), a novel distillation technology that enables continuous magnesiumMagnesium recovery using just 0.5–1 kWh/kg—about 80–90% less energy than conventional processesProcess. G-METS utilizes multiple stacked evaporator-condenser pairs, where heat from magnesiumMagnesium vapor condensation in one “effect” is reused to drive evaporation in the next. The hydrostatic pressure of descending liquid metalLiquid metal creates a temperatureTemperature gradient, allowing heat to flow upward through the system. Operating under low-pressure conditions lowers the boiling point and reduces thermal losses leading to better efficiency of the system. This study presents experimental distillation data from a one-effect distiller using AZ31b alloys. This study also presents experiments on liquid Mg transfer out of the furnace and validation of models for scale-up to industrial multi-effect systems.