• Data Access
  • Your Email  
  • Your Email  
Keep me signed in.
Forgot your password?
Close
  • Forgot Your Password?
  • Enter the email you signed up with and we'll email it to you.
  • Your Email  
Close
Back
MDO
Mining Data Solutions
  • Home
  • Database
  • Subscribe
  • Sign In
  • Sign In
Brazil
Casa de Pedra Complex

This page is not tailored to
devices with screen width under 750 px.
 Location:
7 km NW from Congonhas, Brazil

  Address:
Av. Brigadeiro Faria Lima, 3400 Itaim Bibi
São Paulo
Brazil
04538-132
Phone  ...  Subscription required
EmailEmail
WebsiteWeb
Additional Resources for Suppliers & Investors
Drill results over 30 g/t Au
Stay on top of recent discoveries.
Search drill results by commodity and grade.
Largest mines in the Americas
Mining and mill throughput capaciites.
Full profiles of select mines and projects.
Deepest underground mines
Shaft depth and mill throughput data.
Full profiles of select mines and projects.
Heavy mobile equipment
HME type, model, size and quantity.
Full profiles of select mines and projects.
Permitting and construction projects
Projects at the permitting or construction stage. Full profiles of select projects.
Mines with remote camps
Camp size, mine location and contacts.
Full profiles of select mines and projects.
Mines & projects in Brazil
A list of country's mines and projects.
Full profiles of select mines and projects.
  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Fleet
  • Personnel
  • Filings & News

Thank you for browsing through mine profiles compiled by the Mining Data Online team.

Would you like to subcribe or schedule a Demo?
  • Name:
     
  • Company:
     
  • Position:
     
  • Phone:
  • Email:
  • Message:

Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Iron Ore
Mining Method
  • Truck & Shovel / Loader
Production Start...
Mine Life2092
The Casa de Pedra mining complex includes Casa de Pedra and Engenho mines.

The Engenho mine is located at 20°27'37.2" S 43°54'13.5" W.

CSN Mineração’s current business plan contemplates an expansion in annual production capacity from 34 million tons in 2022 to 108 million tons per year in 2033, assuming it is able to complete all of its planned expansion projects.


Owners

Source: p. 46,84,85
CompanyInterestOwnership
Compania Siderurgica Nacional S.A. 78.2 % Indirect
The Casa de Pedra mining complex (Mina Casa de Pedra and Mina do Engenho) property covers an area of 4,701.55 ha and is owned by CSN Mineração S.A.

CSN Mineração was consolidated in 2015 from the merger of the mining assets of CSN (Companhia Siderúrgica Nacional) and Namisa (Nacional Minérios S.A.) and was divided between CSN (87.52%) and a consortium composed of large Asian steelmakers (12.48%).

Compania Siderurgica Nacional S.A. now owns 78.2% of CSN Mineração mines.

Contractors

Subscription required - Subscription is required.


Deposit Type

  • Banded iron formation


Summary:

The iron oxide deposits of the Casa de Pedra mining complex are located within the Quadrilátero Ferrífero, an area of approximately 7,000 km2 within the San Francisco Craton in the central part of Minas Gerais, Brazil.

The Minas Supergroup includes four groups: Caraça, Itabira, Piracicaba and Sabará. The thickest sequence of banded iron formation (BIF) with economically exploitable high-grade iron oxides belong to the Itabira Group, which consists of itabirites, dolomites and subordinately, metapelites. The itabirites are metamorphosed and strongly oxidized iron formations with discontinuously high iron contents, a more or less lenticular morphology and dimensions ranging from a few decimeters to hundreds of metres (Rosiére and Chemale, 2000).

The iron formations of economic interest in the property are hosted within the Minas Supergroup, Itabira Group and Cauê Formation.

The area of the Casa de Pedra mining complex is characterized by several occurrences of iron oxide, where the main hematitic bodies occur as lenses in the northwest-southeast direction. These lenses are present along a 50 km synformal structure, with a normal flank in a north-south direction to the west and an inverted flank to the east, surrounding the Bação Metamorphic Complex in the south. The Casa de Pedra mining complex is located on the western hinge of the Sinclinal Moeda.

The Casa de Pedra mining complex area has undergone three deformational events which ........


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Casa de Pedra mining complex includes Casa de Pedra and Engenho mines.

The Casa de Pedra mine is based on conventional drill, blast, load-and-haul techniques for all mining areas and rock types. The mining fleet is fully owned by CSN Mineração.

All rock is blasted and loaded with excavators and loaders into off-road trucks and hauled to the primary crusher, stockpiles or waste dumps. Primary mining is undertaken by large hydraulic excavators (26 m3 bucket capacity) coupled with 240 t off-road trucks. Front-end loaders of 25 m3 bucket capacity also operate at the pit and stockpiles.

Mining operations at Casa de Pedra and Engenho mines use hydraulic scoops and wheeled loaders to extract iron ore that is then transported by a large fleet of trucks with an installed annual run of mine capacity of approximately 120 million tons.

All material is mined in 10 m high benches which are considered an appropriate balance between productivity and selectivity.

The mining method generates variable grades and quantities of ore that require the use of run of mine (ROM) stockpiles to meet the blending requirements. Front-end loaders are used for the ROM feed and stockpile rehandling.

The mined waste is dumped in the Batateiro waste dump.

The loss of trafficability on haulage routes occurs on a seasonal basis during the rainy season. Management plans and risk reduction strategies are in place to mitigate this.


Crushing and Grinding
Source: Subscription required

- subscription is required.


Processing

Flow Sheet: Subscription required

Summary:

- subscription is required.


Production:

CommodityUnits2022202120202019201820172016
Iron Ore Mt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required283032
All production numbers are expressed as conc., lump & fines.
Subscription required - Subscription is required.

Operational Metrics:

Metrics202220212020201920182017
Annual mining capacity  ......  Subscription required  ......  Subscription required120 Mt120 Mt103 Mt103 Mt
Plant annual capacity  ......  Subscription required  ......  Subscription required
Annual production capacity  ......  Subscription required  ......  Subscription required
Annual production capacity  ......  Subscription required  ......  Subscription required33 Mt of iron ore concentrate33 Mt of iron ore concentrate33 Mt of iron ore concentrate
Subscription required - Subscription is required.

Reserves at December 31, 2021:

CategoryTonnage CommodityGrade
Proven 152.9 Mt Iron 42.49 %
Probable 1,926 Mt Iron 41.07 %
Proven & Probable 2,078 Mt Iron 41.17 %
Measured 461.8 Mt Iron 39.8 %
Indicated 1,517 Mt Iron 37.6 %
Measured & Indicated 1,979 Mt Iron 38.1 %
Inferred 1,724 Mt Iron 37.1 %


Pipelines and Water Supply
Source: Subscription required

- subscription is required.


Heavy Mobile Equipment as of December 31, 2021:
HME TypeModelSize
Dozer ....................... Subscription required
Dozer ....................... Subscription required
Drill (blasthole) ....................... Subscription required 250 mm
Drill (blasthole) ....................... Subscription required 127 mm
Excavator ....................... Subscription required 34 cu. m
Excavator ....................... Subscription required 29 cu. m
Grader ....................... Subscription required 4.9 m
Loader (FEL) ....................... Subscription required 19 cu. m
Truck (haul) ....................... Subscription required 250 t
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2023
....................... Subscription required ....................... Subscription required Subscription required Sep 23, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Form 20-F 2022
Technical Report 2022
................................... Subscription required 2021
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Form 20-F 2018
Form 20-F 2017
Subscription required - Subscription is required.

Subscription required - Subscription is required.

Terms of Use Privacy Policy © 2017-2023 MDO Data Online Inc.