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Gold Transport by Complex Metal Chloride Vapors.
Eisele-JA; Fischer-DD; Heinen-HJ; Kesterke-DG
NTIS: PB 198 290 :12 pages
The possibility of improving the volatilization of gold through the formation of a metal-gold chloride vapor complex was investigated. Gold-silica mixtures, containing ferrous and nonferrous minerals and salts as additives, were treated in a laboratory tube furnace with a flow of chlorine gas at various temperatures. The addition of pyrite (fes2) to a charge of gold-silica increased the volatility of the gold from 3, 20, and 62 percent of the total gold to 62, 93, and 100 percent at 200 deg, 300 deg, and 400 deg c, respectively. Chemical analyses of the condensate indicated the volatile species to be feaucl6.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 198 290
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division