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Chile
Radomiro Tomic Mine

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 Location:
26 km N from Calama, Chile

  Address:
Avenida Central Sur, N° 1990 Villa Ayquina
Calama
Chile
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Costs & Financials
  • Fleet
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Copper
  • Molybdenum
Mining Method
  • Truck & Shovel / Loader
Processing
  • Crush & Screen plant
  • Bacterial leaching
  • Flotation
  • Heap leach
  • Solvent Extraction & Electrowinning
Mine Life2065
The Radomiro Tomic mine is a state of the art facility, and the world’s largest producer of copper using the highly efficient SX-EW process.
Latest NewsChile's Codelco gets regulatory nod to extend life of Radomiro Tomic mine     March 16, 2021


Owners

Source: p. 16, 24
CompanyInterestOwnership
Codelco Corp. 100 % Indirect
In 1997, Codelco inaugurated the first operation led by Chileans, the Radomiro Tomic mine.

Codelco Corp. operates seven mine sites (known as “divisiones”): Chuquicamata, Ministro Hales, Radomiro Tomic, Gabriela Mistral, Salvador, Andina, El Teniente, in addition to the Ventanas Smelter and Refinery.

Deposit Type

  • Porphyry


Summary:

The Chuquicamata district includes the Chuquicamata and Radomiro Tomic megadeposits, the exotic copper deposit Mina Sur, the newly developed Ministro Hales mine (formerly known as Mansa Mina) located 5.5 km south of Chuquicamata, and the deposits of the Toki cluster (Toki, Genoveva, Quetena, Miranda, and Opache) located about 15 km SSW of Chuquicamata. Total identified resources for the Chuquicamata district are estimated at 107.4 Mt of fine copper considering a cutoff Cu grade of 0.2 wt% (Codelco Memoria Anual 2011). Inferred resources for the cluster are estimated at about 20 Mt of fine copper, with Toki contributing with ca. 11.2 Mt and Quetena with ~3.8 Mt (Camus 2003; Rivera et al. 2006).

The deposits of the district are located in the Late Eocene–Early Oligocene (43–31 Ma) porphyry copper belt that extends for about 1,400 km, from 18°S to 31°S (Sillitoe 1988; Sillitoe and Perelló 2005). The rocks in the area range in age from Paleozoic to Tertiary. The main structural feature observed is the West Fault, which is part of the Domeyko Fault System (Boric et al. 1990; Dilles et al. 1997) and divides the district in two domains: an eastern domain and a western domain.

The main copper oxide minerals in the Radomiro Tomic deposit are atacamite, copper clays, chrysocolla, and copper wad. Their relative abundance provides the basis for dividing the oxide zone into two major geologic units: the Upper Oxide unit and the Lower Oxide unit. Furthermore, the study of mineral abundances in the oxide zones allowed the definition of an oxide mineral zonation that consists of five mineral assemblages, based on the relative proportion of the three main copper oxide components: atacamite, copper clays, and chrysocolla. These classifications allow both an understanding of the distribution of copper minerals throughout the zone and an interpretation of the supergene processes that formed it.

The Upper Oxide unit is mineralogically heterogeneous. The copper content is furnished, on average, by 40 vol percent atacamite, 31 vol percent copper clays with minor chysocolla and copper wad. The Lower Oxide unit is more homogeneous. Atacamite accounts for 70 vol percent of the copper ore minerals with minor amounts of copper clays and chrysocolla. Copper and chlorine concentrations and porosity are greater in the Upper Oxide unit, whereas hematite, chalcocite, and molybdenite concentrations and specific gravity are greater in the Lower Oxide unit.

The vertical distribution of the Cl/Cu ratio shows a chlorine-deficient zone located between elevations of 2,780 and 2,870 m. Between these elevations, the proportion of atacamite is lower and the proportion of copper clays, chrysocolla, and copper wad is higher than in other portions of either the Upper Oxide or Lower Oxide units. [2001, Oxide Mineralization at the Radomiro Tomic Porphyry Copper Deposit, Northern Chile P.1]


Mining Methods

  • Truck & Shovel / Loader


Summary:

Radomiro Tomic is mined by open pit extraction method.

Sulfide ores
In open-pit mines, the process of producing copper from sulfide ores begins at the mine pit. Waste rock and ores containing copper are first drilled and blasted and then loaded onto diesel-electric trucks by electric shovels. Waste is hauled to dump areas.

Oxide Ores
Copper oxide ore is mined, crushed and deposited into large piles.


Crushing and Grinding


Processing

  • Crush & Screen plant
  • Bacterial leaching
  • Flotation
  • Heap leach
  • Solvent Extraction & Electrowinning

Source: Subscription required

Summary:

Heap bioleaching of sulphides at room temperature is currently in industrial application at Radomiro Tomic Division.

Construction work for the Radomiro Tomic Copper Sulphide Mine - Phase I was completed in June 2010 with an investment of $370m. A crushing system was installed as part of this phase, to haul up to 100,000t of sulphide ore per day from the Radomiro Tomic mine to the concentrator plant located at Chuquicamata.

The project established the construction and operation of a stand-alone Concentrator of 200,000 t/d, it would be one of the world’s largest SAG concentrator operation. It also includes seawater desalination treatment and impulsion facilities that will have a capacity of 1.600 litres per second (l/s).

Sulfide Ores
In the conventional concentrator/smelter/refinery process for sulfide ore, this finely ground ore is agitated in a water and chemical solution and pumped as a watery mixture to the flotation separator. The solution is ........

Recoveries & Grades:

CommodityParameter201920182017
Copper Head Grade, %  ......  Subscription required0.530.51

Production:

CommodityProductUnits2020201920182017201620152014
Copper Cathode t  ......  Subscription required  ......  Subscription required332,667318,878318,255315,747327,278
Molybdenum Metal in concentrate t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017
Ore tonnes mined 70,753 kdmt77,692 kdmt78,582 kdmt

Reserves at December 31, 2020:

CategoryOreTypeTonnage CommodityGradeContained Metal
Proven Sulphide 463 Mt Copper 0.52 % 2.4 Mt
Proven Oxide 150 Mt Copper 0.54 % 0.8 Mt
Probable Sulphide 912 Mt Copper 0.5 % 4.5 Mt
Probable Oxide 351 Mt Copper 0.41 % 1.5 Mt
Proven & Probable Sulphide 1.375 Mt Copper 50 % 6.9 Mt
Proven & Probable Oxide 501 Mt Copper 0.45 % 2.3 Mt
Proven & Probable Total 1,876 Mt Copper 0.49 % 9.2 Mt
Measured 1,171 Mt Copper 0.49 % 5.8 Mt
Indicated 1,321 Mt Copper 0.44 % 5.8 Mt
Inferred 1,675 Mt Copper 0.41 % 6.9 Mt
Total Resource 4,167 Mt Copper 0.44 % 18.5 Mt

Commodity Production Costs:

CommodityUnits20192018201720162015
C1 cash costs Copper USD  ......  Subscription required 1.34 / lb 1.31 / lb 1.35 / lb 1.41 / lb
Subscription required - Subscription is required.

Financials:

Units202020192018201720162015
Revenue M USD  ......  Subscription required  ......  Subscription required2,084   2,315   1,588   1,631  
Gross profit M USD  ......  Subscription required  ......  Subscription required783.9   812.8   405   410.3  
Pre-tax Income M USD  ......  Subscription required  ......  Subscription required488.6   471.2   128.2   291.7  
After-tax Income M USD  ......  Subscription required  ......  Subscription required159.5   160.6   35.1   105  
Subscription required - Subscription is required


Proposed Heavy Mobile Equipment as of December 27, 2021:
HME TypeModelQuantity
Truck (haul) ....................... Subscription required ....................... Subscription required
Subscription required - Subscription is required.

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2021
....................... Subscription required ....................... Subscription required Subscription required Jun 23, 2021
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2020
Subscription required 2019
Subscription required 2018
Subscription required 2017
Subscription required 2016
Subscription required 2015
Subscription required 2014

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2021
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2020
................................... Subscription required 2019
................................... Subscription required 2019
................................... Subscription required 2019
Annual Report 2018
Corporate Presentation 2018
Annual Report 2017
Corporate Presentation 2017
Annual Report 2016
Corporate Presentation 2016
Financial Review 2016
Annual Report 2015
Other 2013
Other 2001
Subscription required - Subscription is required.

News:

NewsDate
Chile's Codelco gets regulatory nod to extend life of Radomiro Tomic mine March 16, 2021

Aerial view:

Subscription required - Subscription is required.

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