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Proyecto Touro copper project, Spain – update

Image of Spain flag and periodic table symbol for copper

26th November 2021

By: Sheila Barradas

Creamer Media Research Coordinator & Senior Deputy Editor

     

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Name of the Project
Prieska copper/zinc project.

Location
In the Northern Cape, in South Africa.

Project Owner/s
Diversified metal explorer and developer Orion Minerals.

Project Description
An updated bankable feasibility study (BFS) has confirmed the potential of the Prieska project to underpin a significant near-term, low-cost, copper/zinc development project, with exceptional opportunities for future growth.

The project has total mineral resources of 30.49-million grading 1.2% copper and 3.7% zinc.

The updated BFS on the foundation phase of the project proposes the development of a new 2.4-million-tonne-a-year copper/zinc mining operation at the brownfield project.

Underground and surface mining methods are planned to be used in conjunction with conventional froth-flotation concentration to produce differentiated copper and zinc concentrates for export.

Peak production is estimated at 23 000 t/y of copper and 88 000 t/y of zinc.

The life-of-mine has been extended by two years, from 9.7 years to 11.5 years.

Material changes in the updated BFS, compared with the 2019 BFS plan, include:
 

  • reducing the mine dewatering timeline and supplementing the treatment of that water,
  • incorporating additional mineral resources into the mining plan that will increase the mine life by two years,
  • a more conservative timeline to ramp up to steady-state production,
  • prioritising the early mining of high-grade zones in the mining sequencing,
  • the adoption of semiautogenous grinding mills in the processing flowsheet,
  • an owner-miner operating philosophy for underground mining,
  • using an experienced contractor to operate the processing plan, and
  • a change in the key operational infrastructure being supplied by third-party financing and in the supply of select key operational infrastructure.

The mining methods for the project remain unchanged, compared with those stated in the 2019 BFS. Tunnel development remaining from the previous mining operations allows for early access to underground production mining areas. A combination of longhole open stoping with fill and drift-and-fill mining methods are planned to be used, supported with paste backfill.

Potential Job Creation
Not stated.

Net Present Value/Internal Rate of Return
The project has a net present value, at an 8% discount rate, of A$779-million, compared with A$574-million in the 2019 BFS, and an internal rate of return of 39%, compared with 38% in the 2019 BFS. Payback from first production is estimated at 2.4 years, a decrease of five months.

Capital Expenditure
Total startup capital, including contingency, has decreased from A$400-million in the 2019 BFS to A$373-million in the updated BFS.

Peak funding requirements have increased from A$378-million in the 2019 BFS to A$413-million.

Planned Start/End Date
Orion Minerals is targeting production startup in 2024, market conditions permitting.

Latest Developments
Orion Minerals is targeting net-zero carbon emissions from its Prieska mine by collaborating on a new megascale renewable-energy hub.

The company has initiated discussions with the Central Energy Corporation (CENEC) to include its flagship Prieska copper/zinc project in the Prieska Power Reserve, the large-scale renewable-energy hub currently planned for the Prieska district, in the Northern Cape.

The renewable energy generated at the Prieska Power Reserve will be stored as green hydrogen and ammonia on a long-term basis, and the project is aimed at achieving energy independence to avoid the constraints and limitations of South Africa’s national electricity grid.

Orion has said that access to the Prieska Power Reserve would significantly reduce carbon emissions from the Prieska project, with the potential that the mine could be entirely powered by renewable-energy and green hydrogen sources to potentially achieve net-zero carbon emissions. This would position Prieska as one of the greenest and lowest-carbon-emission copper and zinc producers in the world.

It would also have the potential to significantly reduce mine operating costs, which also opens the door to potentially incorporate future value-adding beneficiation and downstream processing at Prieska using reliable, low-cost, clean renewable energy.

Key Contracts, Suppliers and Consultants
Companies involved in the BFS included A&B Global Mining; ABS Africa; BPDT & Co; Bluhm Burton Engineering & Ventilation Consultants; Beulah Africa; Cart Investments; DRA Projects South Africa; Earth Science Solutions; Endeavour Financial Limited; Falcon and Hume Attorneys Inc; Fraser McGill Mining & Minerals Advisory; Knight Piésold; METC Engineering; Gariep Mining and Exploration Services; Mets Consulting South Africa; Patterson and Cooke; PCDS Consultants; Power Plant Electrical Technologies; Professional Cost Consultants; Promethium Carbon; Shift Innovations; SRK Consulting; Strategy4Good; The MSA Group; Turnkey Civil (International) Group; VBKom Engineering Consultants; Whittle Consulting; and Z Star Mineral Resource Consultants.

Contact Details for Project Information
Orion Minerals, tel +27 11 880 3159 or email info@orionminerals.com.au.

Edited by Creamer Media Reporter

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