The Kamoa-Kakula Copper Mine — a joint venture between Ivanhoe Mines (39.6%), Zijin Mining Group (39.6%), Crystal River Global Limited (0.8%) and the Government of the Democratic Republic of Congo (20%) — is a very large, near-surface, flat-lying, stratiform copper deposit with adjacent prospective exploration areas within the Central African Copperbelt, approximately 25 kilometres west of the town of Kolwezi and about 270 kilometres west of the provincial capital of Lubumbashi.
Kamoa-Kakula began producing copper concentrates in May 2021 and began commercial production on July 1, 2021. Phased expansion is projected to make Kamoa-Kakula the second largest copper complex globally. Kamoa-Kakula is powered by clean, renewable hydro-generated electricity and is projected to be among the world’s lowest greenhouse gas emitters per unit of metal produced, as confirmed by a 2020 independant audit performed by Hatch Ltd., of Mississauga, Canada. The Kakula Mine will have one of the most favourable environmental footprints of any tier-one copper mine worldwide. Along with a relatively small surface footprint, approximately 55% of the mine’s tailings will be pumped back into underground workings. Ivanhoe Mines has pledged to achieve net-zero operational greenhouse gas emissions (Scope 1 and 2) at the Kamoa-Kakula Copper Mine.
Technical Reports 2020
Click here to view the Kamoa-Kakula Integrated Development Plan 2020
Click here to view the Kamoa-Kakula 2020 Resource Update, March 2020
First copper production began May 25, 2021
Initial production of copper concentrate at the Kakula Mine processing plant began on May 25, 2021.
Kakula is projected to be the world’s highest-grade major copper mine, with an initial mining rate of 3.8 Mtpa, ramping up to 7.6 Mtpa in Q3 2022. Phase 1 is expected to produce approximately 200,000 tonnes of copper per year, and phases 1 and 2 combined are forecast to produce approximately 400,000 tonnes of copper per year. Based on independent benchmarking, the project’s phased expansion scenario to 19 Mtpa would position Kamoa-Kakula as the world’s second-largest copper mining complex, with peak annual copper production of more than 800,000 tonnes.
Given the current copper price environment, Ivanhoe and its partner Zijin are exploring the acceleration of the Kamoa-Kakula Phase 3 concentrator expansion from 7.6 Mtpa to 11.4 Mtpa, which may be fed from expanded mining operations at Kansoko, or new mining areas at Kamoa North (including the Bonanza Zone) and Kakula West.
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A Floatation platform lift during construction of the initial Kakula Copper Mine
The Kakula Copper Mine in the Democratic Republic of Congo (DRC) is on track for first production in June 2021
Underground development at the Kansoko Mine currently is in low-to-medium-grade ore zones, grading between approximately +2% and +3% copper. Kansoko is being developed by training crews and will be a supplemental source of ore when the Kakula concentrator processing capacity doubles to 7.6 Mtpa − currently planned to be commissioned in Q2 2022.
Aerial view of the Kakula North stockpile
Kamoa-Kakula Integrated Development Plan 2020 (IDP 2020)
In September 2020, Ivanhoe Mines announced extremely positive findings of an independent definitive feasibility study (DFS) for the development of the Kakula Copper Mine; together with an updated pre-feasibility study (PFS) that includes ore mined from the nearby Kansoko Copper Mine in addition to ore mined from Kakula; and an updated, expanded preliminary economic assessment (PEA) for the overall development plan of all the copper discoveries made to date at the Kamoa-Kakula Project on the Central African Copperbelt in the DRC.
The DFS, PFS and updated PEA, collectively referred to as the Kamoa-Kakula Integrated Development Plan 2020 (Kamoa-Kakula IDP20), build on the excellent results of the previous studies announced in February 2019. The new DFS incorporates the advancement of development and construction activities to date, and has once again confirmed the outstanding economics of the first phase Kakula Mine. As well, the expanded PEA shows the excellent potential to develop the project to a much larger scale and with a significantly larger production capacity.
Kamoa-Kakula mining licence, showing the Kamoa, Kamoa North, Kakula and Kakula West Mineral Resource areas, and a portion of Ivanhoe’s 100% owned Western Foreland area.
The Kamoa-Kakula Integrated Development Plan 2020 encompasses three development scenarios:
The Kamoa-Kakula IDP20, which includes the Kakula 2020 DFS, Kakula-Kansoko 2020 PFS and Kamoa-Kakula 2020 PEA, was independently prepared on a 100%-basis by OreWin Pty Ltd. of Adelaide, Australia; China Nerin Engineering Co., Ltd., of Jiangxi, China; DRA Global of Johannesburg, South Africa; Epoch Resources of Johannesburg, South Africa; Golder Associates Africa of Midrand, South Africa; KGHM Cuprum R&D Centre Ltd. of Wroclaw, Poland; Outotec Oyj of Helsinki, Finland; Paterson and Cooke of Cape Town, South Africa; Stantec Consulting International LLC of Phoenix, USA; SRK Consulting Inc. of Johannesburg, South Africa; and Wood plc of Reno, USA.
Mill construction during development of the initial Kakula Copper Mine
The Kamoa-Kakula 2020 PEA is preliminary in nature and includes an economic analysis that is based, in part, on Inferred Mineral Resources. Inferred Mineral Resources are considered too speculative geologically for the application of economic considerations that would allow them to be categorized as Mineral Reserves – and there is no certainty that the results will be realized. Mineral Resources do not have demonstrated economic viability and are not Mineral Reserves.
Modular, integrated, expanded development option potential for the Kakula and Kamoa deposits, mining a total of 19 Mtpa, with construction of a direct-to-blister smelter
Figure 1. Kamoa-Kakula 19-Mtpa PEA long-term development plan.
Figure by OreWin 2020.
Figure 2. Overview of deposits included within the Kakula 2020 DFS(6 Mtpa ─ outlined by blue dotted line), Kakula-Kansoko 2020 PFS (7.6 Mtpa ─ outlined by purple dotted line) and Kamoa-Kakula 2020 PEA (outlined by green dotted line).
Figure by OreWin 2020.
Key initial projections from the Kakula 2020 DFS
The study evaluates the development of a stage one, 6-Mtpa underground mine and surface processing complex at the Kakula Deposit of 7.6 Mtpa, built in two modules of 3.8 Mtpa, with the first already under advanced construction. The first module of 3.8 Mtpa commences production in Q3 2021, and the second in Q1 2023. The life-of-mine production scenario provides for 110 million tonnes to be mined at an average grade of 5.22% copper, producing 8.5 million tonnes of high-grade copper concentrate, containing approximately 10.8 billion pounds of copper.
The economic analysis uses a consensus, real long-term copper price of US$3.10/lb. (excluding inflation) and returns an after-tax NPV at an 8% discount rate of US$5.5 billion. It has an after-tax IRR of 77.0% and a payback period of 2.3 years.
The estimated remaining initial capital cost, including contingency, is US$0.65 billion from July 1, 2020. The capital expenditure for off-site power, which is included in the remaining initial capital cost, includes advances to the DRC state-owned electricity company, Société Nationale d'Electricité (SNEL), to upgrade two hydropower plants (Koni and Mwadingusha) to provide the Kamoa-Kakula Project with access to clean electricity for its planned operations. The hydro-power upgrading work is being led by Stucky Ltd., of Renens, Switzerland, and the advance payments will be recovered by Kamoa-Kakula through a reduction in the power tariffs paid.
Aerial picture of the Mwadingusha hydro-electric dam and power plant, with the new installed penstocks. Mwadingusha will soon be delivering 72 megawatts (MW) of clean, sustainable hydro-electricity to the national grid. The Kakula Mine is scheduled to be energized with permanent, 220-kilovolt (kV), hydro-generated power from the national grid in early 2021.
Expanded 19-Mtpa development scenario for the Kakula and Kamoa deposits
The Kamoa-Kakula 2020 PEA also assesses an additional development option of mining several deposits on the Kamoa-Kakula Project as an integrated, 19-Mtpa mining, processing and smelting complex, built in multiple stages. This scenario envisages the construction and operation of three separate mines: first, an initial 6-Mtpa mining operation would be established at the Kakula Mine on the Kakula Deposit; this is followed by a subsequent, separate 6-Mtpa mining operation at the Kansoko Mine, where two crews are working already; a third 6-Mtpa mine then will be established at the Kakula West Mine, in addition to a fourth initial mine in the Kamoa North area operating initially at 1 Mtpa. The processing plant is constructed in five modules of 3.8 Mtpa, with an ultimate capacity of 19 Mtpa.
As the resources at the Kakula, Kansoko and Kakula West mines are mined out, production would begin sequentially at five other mines in the Kamoa North area to maintain throughput of 19 Mtpa to the then existing concentrator and smelter complex, as illustrated in Figure 1.
Each 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 by 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 per annum.
The Kamoa-Kakula 2020 PEA is preliminary in nature and includes an economic analysis that is based, in part, on Inferred Mineral Resources. Inferred Mineral Resources are considered too speculative geologically for the application of economic considerations that would allow them to be categorized as Mineral Reserves – and there is no certainty that the results will be realized. Mineral Resources do not have demonstrated economic viability and are not Mineral Reserves.
Ultra-high-grade drill core, comprised almost entirely of chalcocite, from a hole drilled at Kamoa North. Kamoa North is an important source of high-grade ore in Kamoa-Kakula’s expanded 19 Mtpa development scenario. Chalcocite has the greatest percentage of copper of all the common sulphide-copper-bearing minerals ─ almost 80% copper by weight.
Summary of the PEA’s key results for the 19-Mtpa development scenario
Kamoa-Kakula Project 2020 Mineral Reserve
Classification | Ore (Mt) | Copper (%) | Copper | Copper |
---|---|---|---|---|
(Contained Mlb) | (Contained kt) | |||
Proven Kakula Mineral Reserve | – | – | – | – |
Probable Kakula Mineral Reserve | 110 | 5.22 | 12,665 | 5,745 |
Proven Kansoko Mineral Reserve | – | – | – | – |
Probable Kansoko Mineral Reserve | 125 | 3.81 | 10,525 | 4,774 |
Proven Kamoa-Kakula Mineral Reserve | – | – | – | – |
Probable Kamoa-Kakula Mineral Reserve | 235 | 4.47 | 23,190 | 10,519 |
Notes to accompany Kamoa-Kakula Project 2020 Mineral Reserve table:
Consolidated Kamoa and Kakula 2020 Mineral Resources
In February 2020, Ivanhoe announced an updated Indicated and Inferred Mineral Resource estimate for the Kamoa Deposit that includes resources in the new Kamoa North Bonanza Zone and the Kamoa Far North Zone. The new Kamoa Mineral Resource estimate has an effective date of January 30, 2020 and was prepared by George Gilchrist, Ivanhoe Mines’ Vice President, Mineral Resources, under the direction of Gordon Seibel, RM SME, of the Wood Group (formerly Amec Foster Wheeler), of Reno, USA , and is reported in accordance with the 2014 CIM Definition Standards for Mineral Resources and Mineral Reserves. Mr. Seibel is the Qualified Person for the estimate.
The project's geological team also updated the Mineral Resource estimate for the Kakula Deposit. This updated estimate has an effective date of November 2018. Effective January 30, 2020, the total, combined Indicated and Inferred Mineral Resources for the Kamoa-Kakula Project is shown in Table 8. Tables showing the Indicated and Inferred Mineral Resources separately for the Kamoa and Kakula deposits, as well as the sensitivity of Mineral Resources to cut-off grade, are shown in the appendices to this release.
Table 8. Total Kamoa and Kakula Indicated and Inferred Mineral Resource (at 1% total copper cut-off grade).
Deposit | Category | Tonnes (millions) | Area (Sq. km) | Copper Grade (%) | Vertical Thickness (m) | Contained Copper (kt) | Contained Copper (billion lbs) |
---|---|---|---|---|---|---|---|
Kamoa | Indicated | 760 | 55.2 | 2.73 | 5.0 | 20,800 | 45.8 |
Inferred | 235 | 21.8 | 1.70 | 4.0 | 4,010 | 8.8 | |
Kakula | Indicated | 627 | 21.7 | 2.74 | 10.3 | 17,200 | 37.9 |
Inferred | 104 | 5.6 | 1.61 | 6.7 | 1,680 | 3.7 | |
Total Kamoa-Kakula Project | Indicated | 1,387 | 77.0 | 2.74 | 6.5 | 38,000 | 83.7 |
Inferred | 339 | 27.4 | 1.68 | 4.5 | 5,690 | 12.5 |
Notes to accompany the total, combined Kamoa and Kakula January 2020 Mineral Resource table:
Tonnes and grades were calculated for the mining blocks, and allowances for unplanned dilution and mining recovery were applied to estimate the Mineral Reserve Statement.
Click here to view the full technical report titled: Kamoa-Kakula 2018 Resource Update, March 2018
Click here to view the Kakula 2016 Preliminary Economic Assessment, January 2017
Kamoa-Kakula Project - Environmental Impact Study Update June 2017 | Click to view PDF |