in neat (no solvent) pressing a mixture of pyrite and common salt; the mixture contains 60 percent NaCl and 40 percent S; extraction with H2O vapor; evaporation of the lye; heating the residue in H2SO4;;
参考文献
Na: MVol., 177, page 537 - 538
Handbuch der Soda-Industrie und ihrer Nebenzweige, 3. Aufl., F. Vieweg u. Sohn, Braunschweig 1909, Bd. 2, S. 216
Ferraboschi, F.
Proceedings of the Chemical Society, London, 1909 , vol. 25, p. 179
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Gmelin Handbook: S: MVol.B2, 1.6.2, page 514 - 516
