Red River Resource - Gravity Circuit Design for Hillgrove Gold Mine

Mincore was engaged in the Design and Engineering of a Gravity Circuit to remove free ‘gravity recoverable gold’ from the Baker’s Creek Mine gold ore dump at the Hillgrove Mine Site. The Hillgrove Mine site included a 250 ktpa capacity processing plant comprising a selective flotation circuit (capable of producing antimony-gold and refractory gold concentrates), an antimony leach/SXEW/refining & casting plant, a gold cyanide leach circuit & gold room, and a pressure oxidation circuit. Testwork indicated that 61% of the gold in the Baker’s Creek Mine ore dump could be recovered by gravity. The gravity circuit was bolted onto the existing grinding circuit to treat the gravity recoverable gold. It was expected to treat 300 ktpa of ore with an average gold grade of 2.7 g/t.