Carbon-in-pulp Gold Adsorption from Cyanide Leach Slurries.
Hussey-SJ; Salisbury-HB; Potter-GM
NTIS: PB 80-101538 :22 pages
A jig tailing with gold content ranging from 0.33 to 0.43 Oz/ton was leached in weak cyanide solution with extractions of up to 97 pct in 24 hours. By countercurrent batch leaching studies and laboratory pilot plant operation, minus 10- plus 20-mesh and minus 6- plus 16- mesh coconut carbon were loaded to 700 oz/ton of au. Minor silver in the ore reported in the carbon in amounts of up to 100 oz/ton. Gold adsorption rate data and an equilibrium adsorption curve for minus 10- plus 20-mesh carbon at ambient temperatures were developed and used in the successful application of a cascade design theory. The work was performed as a part of the overall Bureau of Mines research effort to help maintain an adequate domestic supply of metals by making improvements in mineral-processing technology.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 80-101538