Name of the Project
Kamoa-Kakula copper project.

Location
The Kolwezi district of Lualaba province, in the Democratic Republic of Congo (DRC).

Project Owner/s
Kamoa Copper – a joint venture (JV) between base and precious metals developer Ivanhoe Mines, with 39.6% ownership; Zijin Mining Group, with 39.6% ownership; Crystal River Global, with 0.8% ownership; and the DRC government, with 20% ownership.

Project Description
Ivanhoe Mines has announced outstanding economic results in the independent integrated development plan for the tier-one Kamoa-Kakula copper project.

The Kamoa-Kakula Integrated Development Plan 2020 comprises three development scenarios: the Kakula definitive feasibility study (DFS), the Kakula-Kansoko prefeasibility study (PFS) and the Kamoa-Kakula preliminary economic assessment (PEA).

Kakula
The Kakula DFS proposes the development of a Stage 1, six-million-tonne-a-year underground mine and surface processing complex at the Kakula deposit, with a capacity of 7.6-million tonnes a year built in two modules of 3.8-million tonnes a year. For this option, 110-million tonnes will be mined at an average grade of 5.22% copper, producing 8.5-million tonnes of high-grade copper concentrate and containing about 10.8-billion pounds of copper.

Kakula-Kansoko
The Kakula-Kansoko 2020 PFS evaluates the development of mining activities at the Kansoko deposit in addition to the Kakula mine, initially at a rate of 1.6-million tonnes a year, to supply the concentrator at Kakula, eventually ramping up to six-million tonnes a year as the reserves at Kakula are depleted.

Kamoa-Kakula
The Kamoa-Kakula 2020 PEA assesses an additional development option of mining several deposits on the Kamoa-Kakula project as an integrated, 19-million-tonne-a-year mining, processing and smelting complex, built in multiple stages.

An initial six-million-tonne-a-year mining operation will be established at the Kakula mine on the Kakula deposit, which will be followed by a separate six-million-tonne-a-year mining operation at the Kansoko mine. A third, six-million-tonne-a-year mine will then be established at the Kakula West mine, in addition to a fourth initial mine in the Kamoa North area operating at one-million tonnes a year. The processing plant will be built in five modules of 3.8-million tonnes a year, with an ultimate capacity of one-million tonnes a year.

As the resources at the Kakula, Kansoko and Kakula West mines are mined out, production will begin sequentially at five other mines in the Kamoa North area to maintain throughput of 19-million tonnes a year to the existing concentrator and smelter complex.

Every mining operation is expected to be a separate underground mine, with a shared processing facility and surface infrastructure located at Kakula. Material will be transported to the Kakula processing complex using a system of overland conveyors. Included in this scenario is the construction of a direct-to-blister copper smelter with a capacity of one-million tonnes of copper concentrate a year.

Potential Job Creation
Once the two processing plants at Kakula are operating, Ivanhoe expects to employ almost 2 000 permanent Kamoa employees.

Net Present Value/Internal Rate of Return
The Kakula DFS yields an after-tax net present value (NPV), at an 8% discount rate, of $5.5-billion and an internal rate of return (IRR) of 77% over a 21-year mine life, with a payback of 2.3 years.

The Kakula-Kansoko PFS yields an after-tax NPV, at an 8% discount rate, of $6.6-billion and an IRR of 69% over a 37-year mine life, with a payback of 2.5 years.

The Kamoa-Kakula PEA yields a potential after-tax NPV, at an 8% discount rate, of $11.1-billion and an IRR of 56% over a mine life of more than 40 years, with a payback of 3.6 years.

Capital Expenditure
The Kakula DFS estimates peak funding at $775-million, remaining initial capital costs at $646-million and expansion capital costs at $594-million.

The Kakula-Kansoko PFS estimates peak funding at $848-million, remaining initial capital costs at $695-million and expansion capital costs at $750-million.

The Kamoa-Kakula PEA estimates peak funding at $784-million, remaining initial capital costs at $715-million and expansion capital costs at $4.46-billion.

Planned Start/End Date
The initial production of copper concentrate at the Kakula mine processing plant began on May 25, 2021, and achieved commercial production on July 1, 2021.

The expansion of the Kakula processing plant will be brought forward from the first quarter of 2023 to the third quarter of 2022.

Latest Developments
The Kamoa-Kakula project set a new quarterly production record in the first quarter of this year, with 55 602 t of copper-in-concentrate produced.

Kamoa Copper milled 1.08-million ore tonnes during the quarter at an average feed grade of 5.91% copper.

Commercial production of the 3.8-million-tonne-a-year Phase 2 concentrator plant at Kamoa-Kakula was successfully declared on April 7.

Kamoa-Kakula has also set a new daily production record on April 8, with 25 126 t milled and 1 202 t of copper produced.

Management expects that the early commissioning of the Phase 2 concentrator plant will enable Kamoa Copper to reach the upper end of its 2022 copper production guidance of 290 000 t to 340 000 t.

First ore was introduced into the Phase 2 milling circuit on March 21, and first copper concentrate was produced about four months ahead of schedule.

The Phase 2 concentrator plant is a mirror image of the Phase 1 plant, with a design throughput of 475 dry tonnes an hour, or 3.8-million tonnes a year.

Over the past six months, the Phase 1 plant has consistently exceeded design ore throughput by about 10% to 15%, Ivanhoe Mines has said.

Kamoa Copper adds that, during the first 17 days of production, Phase 2 regularly exceeded its design throughput capacity, and continues to perform at similar throughput and recovery rates as the Phase 1 concentrator.

Kamoa Copper will increase its annualised copper production rate to more than 400 000 t from this month forward.

Key Contracts, Suppliers and Consultants
DFS/PFS/PEA:
OreWin (overall report preparation, mining, logistics, power and economic analysis); China Nerin Engineering (smelter design and basic engineering contract for the smelter); DRA Global (mine surface infrastructure and metallurgical processing); Epoch Resources (tailings storage facility design); Golder Associates (hydrology models and recommendations); KGHM Cuprum R&D Centre (technical adviser on certain mining methods and geotechnical); Outotec Oyj (smelter technology); Paterson and Cooke (paste backfill plant design and surface/underground paste distribution system); SRK Consulting (mine geotechnical recommendations); Stantec Consulting International (mining and mineral reserves); Wood (mineral resources estimation); Kamoa Copper and SNEL, together with Stucky SA (engineering procurement and construction management – Turbine 5); Voith Hydro (contractor Turbine 5);and Metso (smelter technology).

Contact Details for Project Information
Ivanhoe Mines, tel +1604 688 6630 (North America), +27 11 088 4300 (South Africa) or email info@ivanhoemines.com.