Heap leaching— a low-cost recovery method for small gold deposits in northwestern Ontario

CIM Bulletin, Vol. 76, No. 850, 1983

R.C. BEARD, Mineral Resources Coordinator, NW Region, Ontario Ministry of Natural Resources, Kenora, Ontario

Heap leaching, currently being applied in the treatment of low-grade ores in the southwestern United States, is shown to have potential for use in northwestern Ontario. The history and operation of the process are described, and cost comparisons are given.
Keywords: Leaching, Heap leaching, Gold deposits, Mineral processing, Porosity, Column leaching, Sodium cyanide, Cyanidation.