A METHOD AND APPARATUS TO CONDENSE MAGNESIUM VAPOR USING A FLUID-COOLED HEAT EXCHANGER
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United States of America Patent
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Feb 9, 2023
app pub date -
Nov 20, 2020
filing date -
Nov 20, 2020
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Abstract
A system and method that uses a high-temperature condenser to collect magnesium produced by thermal reduction, electrolysis, or distillation. The condenser is a common heat exchanger design (shell/tube, plate/plate, etc.) and uses a heat transfer fluid to cool and condense magnesium gas, e.g., to 200-900° C. under vacuum or pressure conditions. Solid or liquid magnesium is collected in the condenser along with any by-products or impurities at a purity greater than 35 wt-% Mg. Magnesium is subsequently liberated from the condenser by raising the temperature of the system, lowering the pressure, or both, to induce a phase change in the metal, such as melting or distillation, for further purification to, e.g., >90 wt-% Mg.
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