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Guinea
Sangaredi (Boké) Mine

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 Location:
1 km SE from Sangaredi, Guinea

  Address:
9eme Etage, Immeuble Zein – B.P : 523
Conakry
Guinea
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Personnel
  • Filings & News

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Overview

StageProduction
Mine TypeOpen Pit
Commodities
  • Bauxite
Mining Method
  • Truck & Shovel / Loader
Production Start...
Guinea is the world's second-largest producer of bauxite, with a unique alumina content in the Sangarédi deposit.


Owners

Source: p. 56,328
CompanyInterestOwnership
Dadco Alumina and Chemicals Limited 5.1 % Indirect
Alumina Ltd. 9.18 % Indirect
Alcoa Corp. 13.77 % Indirect
Rio Tinto plc 22.95 % Indirect
Government of Guinea 49 % Indirect
Compagnie des Bauxites de Guinée SA (CBG) (operator) 100 % Direct
Compagnie des Bauxites de Guinée SA is a bauxite operation in Guinea owned by Halco Mining Inc. (51%) and the Guinean Government (49%). Halco is a consortium comprised of Rio Tinto (45%), Alcoa (45%) and Dadco Investments (10%).

Contractors

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Deposit Type

  • Bauxite


Summary:

The bauxite deposits within the Compagnie des Bauxites de Guinée (CBG) lease are of two general types. TYPE 1: In-situ laterization of Ordovician and Devonian plateau sediments locally intruded by dolerite dikes and sills. TYPE 2: Sangaredi type deposits are derived from clastic deposition of material eroded from the TYPE 1 laterite deposits and possibly some of the proliths from the TYPE 1 plateaus deposits.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The Sangaredi site is an open cut mine including the following operations: stripping, drilling, blasting, loading, hauling. At Sangarédi, bauxite is produced according to a well-executed mining plan. The process consists of drilling holes in the mine, loading them and blasting them with the ANFO explosive. The hole pattern is designed to achieve optimal ore fragmentation. After this operation, the bauxite is loaded into 77-100 metric ton trucks and transported to the homogenisation stockpiles at N'Dangara. It is then loaded into trains (120 cars of 82 tonnes each) which transport it to the Kamsar plant. The production flow is maintained continuously through a rotation loop.


Crushing and Grinding


Processing


Summary:

The bauxite is transported by railway cars approximately 135 km away from Sangaredi to Kamsar. At Kamsar, the raw material is crushed in a giant workshop and handled to the production control stocks or to the drying kilns. The crushed and dried bauxite is then sent for loading onto ships with capacities ranging from 50 to 70 thousand tonnes on average. In Kamsar, the installations include the following assets: locomotive repair shop, railway cars unloader, primary crusher, secondary crusher, scrubbers, conveyors, stacker, reclaimer, bauxite dryers, dry bauxite storage, bauxite sampling tower, power house, wharf, ship loader, etc. The crushing plant is used only to reduce oversize material – no screening required. Four bauxite dryers are installed in order to reduce the moisture content of the bauxite before shipping. With the expansion of our operating capacities, we will produce up to 19 million tonnes per year in the first phase, 25 million tonnes in the second and possibly 28 ........


Production:

CommodityUnits2022202120202019201820172016
Bauxite kt  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required13,03915,40916,023
All production numbers are expressed as ore.
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Reserves at December 31, 2022:

CategoryOreTypeTonnage CommodityGradeRecoverable Metal
Proven Mt Bauxite 344 Mt
Proven Bauxite Mt Al2O3 47 %
Probable Mt Bauxite 18 Mt
Probable Bauxite Mt Al2O3 49.4 %
Proven & Probable Mt Bauxite 362 Mt
Proven & Probable Bauxite Mt Al2O3 47.1 %
Measured Bauxite 325 Mt Al2O3 43.7 %
Indicated Bauxite 5,953 Mt Al2O3 46.6 %
Measured & Indicated Bauxite 6,278 Mt Al2O3 46.5 %
Inferred Bauxite 736 Mt Al2O3 45.8 %
Total Resource Bauxite 7,014 Mt Al2O3 46.4 %



Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 11, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2023
....................... Subscription required ....................... Subscription required Subscription required Aug 4, 2023
Subscription required - Subscription is required.


Corporate Filings & Presentations:

DocumentYear
Annual Report 2022
Annual Report 2022
Form 10-K 2022
................................... Subscription required 2020
Annual Report 2017
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