Materials refining on the Moon |
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| Affiliation: | 1. Advanced Materials Processing and Analysis Center (AMPAC), Nanoscience and Technology Center (NSTC), Materials Science and Engineering (MSE), University of Central Florida, Orlando, FL 32826, USA;2. National Aeronautics and Space Administration, Swamp Works, Kennedy Space Center, FL 32899, USA;3. Southeastern Universities Research Association (SURA)/LASSO 013, Swamp Works, Kennedy Space Center, FL 32899, USA;4. College of Medicine, University of Central Florida, Orlando, FL 32827, USA;1. Department of Bionanoscience, TU Delft, Van der Maasweg 9, 2629, HZ Delft, the Netherlands;2. Department of Computer Science, University of Geneva, 7,route de Drize, CH-1227, Carouge, Switzerland;3. Department of Aerospace Science and Technology (DAST), Politecnico di Milano, Via La Masa 34, Milano, 20156, Italy;4. Department of Materials Science and Metallurgy (CMEM), ETSEIB, Universitat Politècnica de Catalunya (UPC), Avda. Diagonal 647, 08028, Barcelona, Spain;5. Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino, Corso Duca Degli Abruzzi 24, 10129, Torino, Italy;6. Department of Space Engineering, Luleå University of Technology, Rymdcampus E10, 98128, Kiruna, Sweden;7. USRA / NASA Ames Research Center, Moffett Field, CA 94035, USA;8. Department of Biology, University of Rochester, Rochester, NY, 14627, USA;9. ,European Astronaut Centre (EAC), European Space Agency (ESA), Linder Hoehe, 51147 Cologne, Germany;10. NASA Ames Research Center, Moffett Field, CA 94035, USA;1. NASA/Johnson Space Center, Energy Systems Division, 2101 NASA Parkway, Houston, TX 77058, USA;2. NASA/Kennedy Space Center, Kennedy Space Center, FL 32899, USA |
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| Abstract: | Oxygen, metals, silicon, and glass are raw materials that will be required for long-term habitation and production of structural materials and solar arrays on the Moon. A process sequence is proposed for refining these materials from lunar regolith, consisting of separating the required materials from lunar rock with fluorine. The fluorine is brought to the Moon in the form of potassium fluoride, and is liberated from the salt by electrolysis in a eutectic salt melt. Tetrafluorosilane produced by this process is reduced to silicon by a plasma reduction stage; the fluorine salts are reduced to metals by reaction with metallic potassium. Fluorine is recovered from residual MgF and CaF2 by reaction with K2O. |
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