sodium in neat (no solvent) by bringing a mixture of powdered NaAlCl3 and Na3AlF6 with pieces of Na (ratio=10:5:2) into a warm furnace; violent reaction, mass and furnace getting white-hot, for completion of reaction further heating;; tapping, Al flows out in liquid slag; yields Al pieces of 6-8 kg;;
Gmelin Handbook: U: SVol.C8, 5.1.2, page 12 - 55
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Katz, J. J.; Rabinowitch, E.
The Chemistry of Uranium, Tl.1, McGraw-Hill, New York - Toronto - London 1951, S.355/82