Freegold Mountain — Preliminary Economic Assessment

Company Freegold Mountain Gold Corp
Date 2023
Region British Columbia, Canada
Commodities Gold, Silver, Copper, Molybdenum

Executive Summary

This technical report section outlines the recovery methods for the Freegold Mountain project, specifically focusing on the Nucleus and Revenue deposits. The recovery strategy is tailored to the specific mineralization characteristics of each deposit. For the Nucleus deposit, which has low base metal content and minimal silver grade, flotation is not viable. Instead, the proposed flowsheet utilizes a gravity circuit involving Knelson Concentration and Tabling, followed by a Cyanide leach circuit for the gravity tails. Gold recovery is achieved through activated carbon absorption and carbon stripping, with a doré bar produced from the gravity concentrate and carbon stripping product. The process is expected to recover 96-97% of contained gold.

The Revenue deposit requires a different approach due to substantial Copper and Molybdenum contributions to the total metal value. This flowsheet includes flotation circuits and bypasses the SART process used in Nucleus. The design allows for a changeover without production interruption, with the initial plant housing space for the flotation circuit to be constructed prior to Revenue production. The Revenue flowsheet involves bulk flotation, Molybdenum cleaner cycles, and copper concentrate production. The Mo tails are redirected to a Cyanide leach circuit for gold recovery, similar to the Nucleus process, ensuring both gold and base metals are recovered efficiently.

Processing Overview

  • Nucleus: Gravity Concentration (Knelson, Tabling) -> Cyanide Leach -> Carbon Absorption -> Doré. SART process assumed for Copper recovery from leachate.
  • Revenue: Gravity Concentration -> Regrind -> Bulk Flotation -> Mo Cleaner -> Cu Concentrate -> Cyanide Leach -> Carbon Absorption -> Doré.
  • Key Recovery: 96-97% Gold recovery expected for Nucleus. Copper and Molybdenum recovered via flotation for Revenue.

Website: https://triumphgoldcorp.com/

Report Date: 2023

Region: British Columbia, Canada

Project Status:

Commodity: Gold, Silver, Copper, Molybdenum

Throughput: 

Mine Life: 

Mine Type: 

Ore type: 

Mineral processing basics

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