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Brazil
Serra Norte Complex (Northern System)

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 Location:
31 km W from Parauapebas, Brazil

  Regional Office:
Rodovia Raimundo Mascarenha Predio T Leve
Parauapebas
Brazil
68515-000
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WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2038
The Serra Norte Complex corresponds to deposits called N1, N2, N3, N4 and N5. The mines in operation are N4E, N4W and N5. There are four processing plants: Plant I (capacity of 85Mt/year), Plant II (capacity of 40Mt/year), Plant III (capacity of 18Mt/year) and Plant IV (capacity 3Mt/year).

Projects N1 and N2 are expected to start up in 2026 and project N3 is expected to start up in 2023.


Owners

Source: p. 46
CompanyInterestOwnership
Vale S.A. 100 % Indirect
Vale conducts iron ore business in Brazil primarily at the parent-company level, and through subsidiaries Mineracao Corumbaense Reunida S.A. (‘‘MCR’’) and Mineracoes Brasileiras Reunidas S.A. (‘‘MBR’’).

Contractors

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Deposit Type

  • Banded iron formation
  • Metamorphic


Summary:

The Carajás Mineral Province hosts world-class deposits of Fe, Cu, Au, Mn, and Ni, resulting from polyphase tectonic evolution, accompanied by hypogenic and supergenic enrichment processes, developed on sedimentary and magmatic rocks of the Archean core of the Amazonian Craton.

Mineralization occurs mainly as a product of supergenic enrichment, developed on jaspilites (algoma-like BIFs interlayered with basalts) in high, flat-topped regions that make up the plateaus observable by remote sensors. The irregularity and discontinuity of the deposits along this mineral province demonstrates the existence of structures inherited from deformational events that favored the thickening of the jaspilite and the efficiency of supergenic processes through the tilting and fracturing of these rocks.

The main Carajás iron ore deposits are associated with flat-topped elevated plateaus, in general, elevated areas, between 650-800 meters, defined along two main morphological alignments corresponding to Serra Norte and Serra Sul. These alignments materialize the limbs of the Carajás Syncline.

The Serra Norte Complex corresponds to the inverted limb geological domain of the Carajás Syncline. The high deformation pattern of this domain is reflected in the geometry and the distribution of the iron formations, whose segmentation by faults and folds of different orientations and scales, individualizes plateaus from N1 to N9.

The plateaus of the Serra Nor ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Serra Norte Complex corresponds to deposits called N1, N2, N3, N4 and N5. The mines in operation are N4E, N4W and N5. Projects N1 and N2 are expected to start up in 2026 and project N3 is expected to start up in 2023.

N4 and N5 mines, currently in operation, utilize open pit mining and are operated by large loading and hauling equipment, namely, hydraulic excavators with loading capacity up to 80 ton, cable excavators with loading capacity up to 109 ton and front-end-loader with loading capacity of 72.6 ton. The haulage is carried out by truck with payload capacity of 400, 363 and 290 Tons. In some regions of these mines, where maximum relevant iron ore caves are presented, continuous miners are utilized, which eliminates drilling and blasting thereby reducing ground vibrations caused by blasting and avoiding damage to the caves near the mining areas.

The mining method at Serra Norte is open pit, as a normal standard operation used across the mining
industry. Part of the material is free digging and other parts require blasting. The ore is loaded into the haul road trucks and dumped straight into the crusher. Blending is required to adjust the average Fe grade.

Mine design
The mine design includes benches with heights 15m, berms with widths of 12m, face angles between 26 and 85 degrees, all according to the lithology in the mine. Ramp access is 40m wide with 10% gradient. The ore is either hauled to stockpiles or dumped straight ........


Crushing and Grinding
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Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2021202020192018201720162015
Iron Ore kt  ......  Subscription required  ......  Subscription required  ......  Subscription required131,500142,700143,600127,600
All production numbers are expressed as concentrate.
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Operational Metrics:

Metrics2022
Annual processing capacity  ......  Subscription required
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Reserves at December 31, 2021:
The economic cut-off grade was not applied, as it is lower than the values estimated in the mineralized portion of the block

CategoryTonnage CommodityGrade
Proven 464.3 Mt Iron 66.1 %
Probable 1,126 Mt Iron 65.7 %
Proven & Probable 1,590 Mt Iron 65.8 %
Measured 592.7 Mt Iron 66.4 %
Indicated 491.5 Mt Iron 66.1 %
Measured & Indicated 1,084 Mt Iron 66.3 %
Inferred 293.4 Mt Iron 66 %


Pipelines
TypeMaterialDiameterLengthDescription


Heavy Mobile Equipment as of April 8, 2022:
HME TypeSizeQuantity
Drill ....................... Subscription required
Excavator 80 tons
Loader (FEL) 72.6 tons
Shovel (rope) 109 tons
Truck (haul) 400 tons
Truck (haul) 363 tons
Truck (haul) 290 tons
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Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 31, 2022
....................... Subscription required ....................... Subscription required Subscription required May 31, 2022
....................... Subscription required ....................... Subscription required Subscription required May 20, 2022
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Staff:

EmployeesContractorsTotal WorkforceYear
Subscription required Subscription required Subscription required 2022

Corporate Filings & Presentations:

DocumentYear
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2019
Form 20-F 2018
Form 20-F 2017
Form 20-F 2016
Form 20-F 2015
Form 20-F 2014
Form 20-F 2011
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