The Cerro Corona project operates an open pit mine and a copper-gold flotation processing plant. The processing plant consists of a conventional primary crushing, semi-autogenous grind (SAG)/ball milling and flotation circuit to generate a copper-gold concentrate. The final concentrate is thickened and filtered before being stockpiled for road transport to the port and for shipment to smelters in Asia and Europe.

CST is produced from this process and transported to the tailings dam where it is stored utilising recycled rainwater.

Gold Fields has an opportunity to create value from their CST waste. However, current technologies known in the market do not provide a compelling economic case for further gold recovery.

Information about the tailings can be found here.

Gold Fields are seeking a partner to identify a cost-effective method to increase recovery of gold from their CST tailings to 85% or greater. Gold is currently recovered using flotation and gravimetry to around 70% recovery.

The solution should consider the following requirements:

• The return on investment should be no longer than 12 months.
• Implementation period of the solution mut not exceed 12 months.
• Comply with Peruvian safety and environmental regulations.

1. Submission Period
   Suppliers are invited to submit their short-form solution to the challenge by 10th March 2023 for evaluation by Austmine and Gold Fields.
2. Evaluation Period
   Shortlisted suppliers will be invited to a technical briefing, where each supplier will be able to gain more information about the challenge from Gold Fields. This will allow you to refine your proposed solution prior to the next stage.
3. Pitch Session
   This is the opportunity to ‘sell’ your solution and gain feedback from operational teams, presenting directly to the Gold Fields team.
4. Full Proposal Submission
   Following the Pitch Session, shortlisted suppliers are invited to submit their formal technical and economic proposals.
5. Winner Announced
   Gold Fields will select the best fit solution/s for the challenge. Unsuccessful submitters are notified in writing by Austmine.

Challenge Launch Webinar
2nd February 2023

EOI Submission Deadline
10th March 2023

Technical Briefing
20th March 2023

Pitch Sessions
3rd April 2023

Final Proposal Deadline
21st April 2023

The Global Mining Challenge is coordinated by Austmine and supported by the Australian Government Department of Industry, Science, Energy and Resources. The program provides new supply and export opportunities for opportunities for Australian METS companies and guides participants through a process of delivering solutions, technologies, and services to major international mining customers.