Continuous Ferric Chloride Leaching of Galena.
Murphy-JE; Eichbaum-BR; Eisele-JA
Pres At Soc Min Eng AIME Annual Mtg Los Angeles, California, Feb 26- 1984 Mar; :5 pages
The Bureau of Mines demonstrated ferric chloride leaching of galena concentrate on a continuous bench-scale basis. Leaching was performed at 95 deg c 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 pct, and the lead chloride produced was 99.97 pct pure.
Pres. At Soc. Min. Eng., AIME Annual Mtg., Los Angeles, California, Feb. 26- Mar. 1, 1984, 5 PP.