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Brazil
Chapadao Mine

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 Location:
13 km E from Catalao, Brazil

  Address:
Fazenda Chapadão, S/Nº, Zona Rural
Ouvidor
Brazil
75715-000
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Phosphate rock
Mining Method
  • Truck & Shovel / Loader
Processing
  • Desliming
  • Granulation
  • Crush & Screen plant
  • Flotation
  • Magnetic separation
Mine Life36 years (as of Jan 1, 2019)


Owners

Source: p. 107, 217
CompanyInterestOwnership
China Molybdenum Co., Ltd 100 % Indirect

Deposit Type

  • Carbonate hosted


Summary:

The Chapadão pit is located in the carbonated complex designated as Domo I (o Complex Catalão I), which belongs to the Igneous Province of Alto Paranaiba. The area is characterized by a weathering profile developed in an intrusive lithology which consists of five types of materials: fresh rock, altered rock, saprolite (two types), and lateritic soil cover.
Catalão I complex
The phoscorite-carbonatite complex Catalão I is an approximately 5 km diameter circular structure. Within this complex, rocks were concentrically emplaced, with a predominant carbonatitic rock core which is surrounded by phoscorites and in turn surrounded by silicate rocks, such as pyroxenite. The rock types are closely associated with the mineralisation in the complex with niobium mineralisation located in the core of the complex (in the phoscorite-carbonatite zone) which is in turn surrounded by high-grade phosphate mineralisation (phoscorite zone) followed by the outer low grade phosphate mineralisation (pyroxenite zone).

As such Complex I hosts both Niobium and Phosphate economically significant mineralisation.

Chapadão – Phosphate
Weathering processes generated a thick weathering cover that, on average, is 150m thick which typically contains the horizontal tabular mineralised zones which are very extensive. During the weathering process some layers were silicified due to the water table variation, resulting in hard material within the mineralised zone. Mineralisation typically occurs as Apatite with the content varying based on the weathering profile which are outlined below:
- Red and yellow laterites, the base of this unit is enriched in magnetite; therefore rich in Fe2O3, which is the main component of the soil. This layer contains no mineralisation.
- Oxide level has the highest degree of alteration and its texture ranges from sandy to argillaceous, depending on the quantity of apatite and magnetite.
- Silexite can be found in the contact between the phlogopite zone and the vermiculite zone, or between the oxide mineralisation and the vermiculite zone. It can be found as vertical or horizontal deposits. It normally contains high grades of P2O5, but also high grades of Fe2O3;
- Vermiculite zone is found on top of the phlogopite zone and is represented by interstratified minerals, rhythmic layers of phlogopite and vermiculite,
- Phlogopite zone: the mica is fresher than in the previous layers,
- Partial weathered layer contains mainly carbonates; primary structures are clearly seen and also boulders often occur.


Mining Methods

  • Truck & Shovel / Loader


Summary:

All mining operations is conducted by contractors via conventional truck and shovel open pit mining methods. Waste material from the pits is delivered through a series of haul roads to onsite waste dumps for storage at each of the current operations.

The Chapadão pit final pit design is 1.9-km long, 1.7-km wide, and 90-m deep. All mining to date has taken place in the upper zone of lateritic and saprolitic soils, targeting the oxidized ore. During the site visit it was noted that no history of instability or wall failures had occurred since the beginning of its operations. RPM noted that mine personnel performs daily visual inspections, which are documented in a check list form and stored in hard copy format.


Crushing and Grinding
Crusher / Mill TypeModelSizePowerQuantity
Ball mill


Processing

  • Desliming
  • Granulation
  • Crush & Screen plant
  • Flotation
  • Magnetic separation

Flow Sheet: Subscription required

Summary:

The phosphate operations consists of two floatation concentrators which combined have a throughput rate of 5.8 mtpa ROM. Feed for the plants is oxide material from the adjacent Chapadão pit. The concentrators, produce a slurry concentrate which is pumped via a 7 km pipeline to the separating station within the Catalão Fertilizer plant. This station separates the fines and coarse materials within the slurry, all fines and 45% of the coarse material are fed directly to the Catalão Fertilizer Plant, the remaining 55% coarse material is transported 750km via rail to the Cubatão Fertilizer Plant. [p.323]

Beneficiation: Ouvidor
The key beneficiation production processes are crushing, milling, and flotation. The beneficiation process increases P2O5 grade in the ore from 13% to 37%. The resulting phosphate concentrate is shipped to the Catalão processing plant. The process also yields barite as a by-product. The niobium tailings are supplied to the Tailings Plant for processin ........


Production:

CommodityUnits2020201920182017201620152014
Phosphate rock kt  ......  Subscription required ^  ......  Subscription required1,1161,1531,1681,1111,113
All production numbers are expressed as fertilizer. ^ Guidance / Forecast.
Subscription required - Subscription is required.

Operational Metrics:

Metrics2019201820172016
Tonnes processed  ......  Subscription required5.64 Mt
Ore tonnes mined  ......  Subscription required5,616 kt
Annual mining capacity  ......  Subscription required17 Mt
Annual processing capacity  ......  Subscription required5.8 Mt
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGrade
Proven & Probable 203.7 Mt Phosphate rock 12.16 %
Proven & Probable 203.7 Mt Niobium 0.34 %
Total Resource 452.1 Mt Phosphate rock 11.22 %
Total Resource 452.1 Mt Niobium 0.28 %

Financials:

Units201720152014
Capital expenditures M USD 24   41  
Revenue M 2,834  RMB 433  USD 486  USD
Operating Income M 131.11  RMB
Pre-tax Income M 131.11  RMB
After-tax Income M 39.8  RMB
EBIT M 91  USD 66  USD
EBITDA M 111  USD 88  USD


Heavy Mobile Equipment as of September 6, 2016:
HME TypeSizeQuantityLeased or
Contractor
Excavator 45 t 2 Leased
Excavator 35 t 1 Leased
Excavator 70 t 2 Leased
Truck (haul) 35 t 39 Leased

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Oct 9, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 9, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 9, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 9, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 8, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 8, 2020
....................... Subscription required ....................... Subscription required Subscription required Oct 8, 2020
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Annual Report 2017
Annual Report 2016
Project Description 2016
Annual Report 2015
Subscription required - Subscription is required.

Aerial view:

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