Detour lake is the second largest gold producing mine in canada with the largest gold reserves and substantial growth potential. The Detour Lake open pit mine is located in northeastern Ontario, approximately 300 kilometres northeast of Timmins and 185 kilometres by road northeast of Cochrane, within the northernmost Abitibi Greenstone Belt.
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The process plant is designed to use conventional crushing, grinding, gravity concentration, gold leaching by cyanidation, gold adsorption by carbon-in-pulp (“CIP”), and gold recovery from .
The ore undergoes primary, secondary and tertiary crushing at the plant. The crushed ore is scalped and screened before being sent to the stockyard. The mine has a stacker-reclaiming facility, at which different grades of processed ore are blended to ensure the grade requirements of the clients.
The Phase 2 mine production schedule delivers 213.4 Mt of ore grading 0.41 g/t gold to the ROM heap leach and 16.1 Mt of ore grading 2.3 g/t gold to the mill. Waste tonnage totaling 581.7 Mt will .
The PFS evaluates recovery of gold and silver from a 30,000 tpd open pit mining operation, with a process plant that will include crushing, grinding, and flotation, with fine grinding of the .
The process plant has been designed to realize an average recovery of 95.7% of the gold sourced from Goliath, 91.9% sourced from Goldlund, and 89.6% sourced from Miller over the life of the project.
The oxide process plant has been designed for a throughput of 350 t/d. The overall flowsheet includes the following steps: Three stage crushing using an open circuit jaw crusher, open-circuit secondary cone crusher and closed-circuit tertiary cone crusher. Grinding and classification. Pre-leach thickening. Cyanide leach.