Benefication of low grade ore at the Detour Lake Mine


The Detour Lake mine is located in north-eastern Ontario, approximately  three hundred kilometres north-east of Timmins and 185 kilometres by road north-east of Cochrane.

The mill processes a free milling gold ore using both gravity circuit and leaching with a state of the art carbon-in-pulp circuit.The grinding circuit is a conventional SABC circuit with a tonnage of 55,000 mtpd at 95 microns with the addition of pre-crushing upstream of the SAG mill.

The present paper will describe the methodology used to successfully prove that gold of the Detour Lake Mine ore is mostly concentrated in the fine size fraction of the blasted rocks. It will describe the various options possible to create value from this ore property.

This paper was presented at CMP 2016. The author may be contacted at This email address is being protected from spambots. You need JavaScript enabled to view it. for copies of the paper.