Overview
| Stage | Construction |
| Mine Type | Open Pit |
| Commodities |
- Vanadium
- Titanium dioxide
- Ilmenite
|
| Mining Method |
|
| Production Start | ...  |
| Mine Life | 10 years (as of Jan 1, 2021) |
In 2022, Largo Inc. will start a series of expansions of the vanadium plant and implementation of new processing plants for Ilmenite and pigment generation. These expansions and implementation will extend to 2032 as described below:
-Phase 1: Ilmenite Concentration Plant 150 kt/y + TiO2 Pigment Processing Plant 30kt/year. Construction period is scheduled for 2022-2023;
-Phase 2: TiO2 Pigment Processing Plant + Vanadium Trioxide Plant Expansions (2024- 2025);
-Phase 3: TiO2 Pigment Processing + Ilmenite Concentration Plant Expansions (2026- 2028) + Site preparation for GAN and NAN (roads/access and pre-stripping);
-Phase 4: V2O5 Expansion Second Kiln (2029-2032) with start of mining operations at GAN and NAN.
The Life-of-mine (LOM) comprises of 20 years of operation, starting with Campbell Pit until 2032, where GAN and NAN Deposits start mining, with both lasting until 2041. |
Source:
p. 10,26
The property consists of eighteen concessions totalling 17,690.5 hectares, and all permits are owned 100% by Largo Vanádio S.A., which is controlled 99.94% directly and indirectly by Largo. The remaining shares of Largo Vanádio S.A. are owned by Companhia Baiana de Pesquisa Mineral, an entity controlled by the Brazilian State of Bahia.
Contractors
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Deposit Type
- Magmatic
- Intrusion related
Summary:
The Maracás Project is Vanadiferous Titano-Magnetite (VTM) deposit.
The NNE-striking, ~70° ESE-dipping Paleoproterozoic Rio Jacaré Intrusion occurs throughout the 40 km long Maracás Project exploration permits. Along the strike of the Rio Jacaré Intrusion within the property, several discrete deposits or areas containing vanadium-rich titanomagnetite bodies have been defined, namely the Gulçari A (Campbell) deposit, the Gulçari A North (GAN) deposit, Gulçari B deposit (currently part of GAN), the Sao Jose deposit (SJO), the Novo Amparo (NAO) deposit and the Novo Amparo North (NAN) deposit. Each of these deposits are located at various stratigraphic heights within the Rio Jacaré Intrusion, and thus occur within different cyclic units.
The Gulçari A deposit (also referred to Campbell Pit) is hosted in the lower parts of the Upper Zone of the Rio Jacaré Intrusion, between cyclic units C1 and C6, with magnetite mineralization hosted predominantly within the C3 unit. This C3 unit comprises medium to coarse-grained gabbro containing lenses of magnetitite, magnetite-pyroxenite and pyroxenite. These lenses are interpreted to pinch out along strike (i.e. in a N-S direction), and it is within this C3 unit that the largest concentrations of vanadium-rich magnetite known on the property are found (Brito, 1984). This magnetite deposit extends for approximately 350 m along strike, is up to 150 m wide and has been intersected in drilling to vertical depths of at least 300 m, ........
Summary:
Mining will be conducted using conventional open pit methods (drill-blast-load-haul), by third-party contractor. The mine plan adopted a dilution of 3% for Campbell Pit, with 100% mining recovery, and for GAN and NAN Deposits, 5% dilution with 95% mining recovery.
The waste dump formation for Campbell Pit will follow the ascending methodology and include drainage bases and channels for dump stability. For GAN and NAN, the waste dumps site shall be adequately prepared to include drainage at its base and channels to direct the flow of water with the aim of aiding geotechnical stability and mitigating the erosion of the stockpiled material.
The waste disposition operation uses the ascending method, beginning during the construction of the heap at the base of the area. Waste rock will be disposed of by truck and then uniformly distributed and leveled by an operator using a tractor. This process is then repeated, stacking another bank above the original one, while maintaining a ramp for the trucks to access the area.
Based on the results of the kinematic analyses, adjustments should be made to the slopes currently used in the mine, mainly in the more altered upper portions and in the portion below, where the massif is more relaxed. In all sectors, the stability of the slopes is controlled by the structures and not by the strength of the matrix, as occurs in heavily altered materials. Breakdown mechanisms are controlled by discontinuities. For GAN a ........
Source:
- subscription is required.
Flow Sheet:
Summary:
- subscription is required.
Projected Production:
| Commodity | Units | Avg. Annual |
|
V2O5
|
kt
| 16 |
All production numbers are expressed as flake & powder.
Operational Metrics:
| Metrics | |
|
Annual ore mining rate
| ...... |
|
Waste tonnes, LOM
| ...... |
|
Ore tonnes mined, LOM
| ...... |
|
Total tonnes mined, LOM
| ...... |
* According to 2021 study.
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Reserves at October 10, 2021:
A cut-off grade of 0.3% V2O5 head is applied in V2O5 Mineral Resource.
Mineral Resources and Reserves are given for GAN and NAN Deposits. Mining at the GAN and NAN deposits commencing in 2032.
| Category | Tonnage | Commodity | Grade | Contained Metal |
|
Probable
|
12.98 Mt
|
Titanium dioxide
|
7.95 %
|
1,031,517 t
|
|
Probable
|
12.98 Mt
|
V2O5
|
0.48 %
|
62,849 t
|
|
Proven & Probable
|
42.51 Mt
|
Titanium dioxide
|
7.77 %
|
3,304,858 t
|
|
Proven & Probable
|
42.51 Mt
|
V2O5
|
0.47 %
|
198,763 t
|
Source:
- subscription is required.
Corporate Filings & Presentations:
| Document | Year |
|
Annual Information Form
|
2022
|
|
...................................
|
2021
|
|
...................................
|
2021
|
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- Subscription is required.