Continuous Ferric Chloride Leaching of Galena.
Murphy JE; Eichbaum BR; Eisele JA
Proc Soc min eng AIME Annu Mtg Los Angeles, California, 1984 1984 2(1):38-42
The Bureau of Mines demonstrated ferric chloride leaching of galena concentrate on a continuous bench scale basis. Leaching was performed at 95 deg. C (200 deg. F) and with a contact time of 15 min. The ferric chloride leaching solution was continuously fed to a leaching tank at a constant rate for periods up to 45 h. In each test, a constant redox potential was maintained in the slurry exiting the leaching tank by controlling the concentrate feed rate. In the 45-h test, lead extraction exceeded 99.5%, and lead chloride produced was 99.97% Pure.
Proc. Soc. Min. Eng. AIME Annu. Mtg, Los Angeles, California, 1984, V.2, No. 1, Feb. 1985, pp. 38-42