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Kyrgyzstan
Bozymchak Mine (East Region and Bozymchak Operation)

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 Location:
37 km SW from Ala-Buka, Kyrgyzstan

  Regional Office:
109 K. Akiev Street
Bishkek
Kyrgyzstan
720010
Phone  ...  Subscription required
WebsiteWeb
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  • Overview
  • Owners
  • Geology
  • Mining
  • Processing
  • Production
  • Reserves
  • Financials
  • Personnel
  • Filings & News

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Overview

StatusTemporary Suspension
Mine TypeOpen Pit
Commodities
  • Copper
  • Gold
  • Silver
Mining Method
  • Truck & Shovel / Loader
Processing
  • Flotation
Mine Life16 years (as of Jan 1, 2016)
East Region and Bozymchak are separate divisions but have been combined for segmental reporting purposes.

October 29, 2020 - Achieving top end of gold guidance is dependent on the restart of the Bozymchak mine in Q4, where production has been temporarily suspended since 7 October, to ensure employee safety following recent political instability in Kyrgyzstan.


Owners & OPERATOR

Source: p. 180, 182
CompanyInterestOwnership
KAZ Minerals plc. 100 % Indirect
KAZ Minerals Bozymchak LLC (operator) 100 % Direct

Deposit Type

  • Skarn


Summary:

The Bozymchak deposits were generated by intrusion of a large granitoid stock with pinkish-grey porphyritic granites of the Dzhalgyzuriuk massif into carbonate cauntry rocks of Devonian and Carboniferous age. Devonian sediments are polymict clastics, calcareus sandstones and limestones of Frasnian-Famennian age. Carboniferous sediments are sandstones and limestones, sometimes siliceous and bituminous, of Tournaisian-Visean age and pyroclastic sedimentary rocks (andesitic and dacitic tuffs) of mid- Carboniferous age.

Mineralization is generally in skarn zones, in the form of disseminated sulphides with associated gold. The major sulphide component is chalcopyrite with lesser bornite and covellite; there is some rare presence of sphalerite and arsenopyrite. Surface oxide mineralization is only weakly developed and is primarily marked by the occurrence of malachite. The skarn mineralization is of garnet-wollastonite and garnet-pyroxene types; metamorphosis of limestone and dolomite has occurred locally to form marble and siliceous limestone. The thickness of the skarn horizon varies from a minimum of around 7 m up to 85 m.

To the east of the main central deposit sulphide zones are found which contain chalcopyrite, pyrite and pyrrhotite, with, in this zone, serpentinites which are the products of alteration of pyroxenite; some fibrous asbestos is also found.

The Bozymchak deposit comprises four sectors separated as discrete areas by faulting:
- South-western sector;
- Central sector;
- Eastern sector;
- Davan sector.

In the Central sector the skarn horizon occurs along a bow-shaped strike along the contact of country rock and the intrusion, along a 2 km strike with dip to the south of between 75-86 degrees.


Mining Methods

  • Truck & Shovel / Loader


Summary:

The dimensions of the final pit is 350 m deep, 700m long and 300m wide, the main benches are 30 m with sub benches at the 10 m giving a total of 12 benches.


Crushing and Grinding


Processing

  • Flotation

Source: Subscription required

Summary:

At Bozymchak produce copper concentrate which also contains gold and silver content as by-products. The copper concentrate from the Bozymchak is toll processed at the Balkhash smelter into finished products of copper cathode, gold bars and silver bars.

The selected plant design is conventional and generally well considered. Ore is delivered by truck or front and loader to fixed grizzly above a bunker that is discharged by an apron feeder that feeds a vibrating grizzly from which the oversize feed the TST 1200 primary jaw crusher. Vibrating grizzly undersize and the primary crushed product is conveyed to a vibrating screen from which the oversize discharges into the sarge bin ahead of the secondary crusher. A belt feeder under the sarge bin feeds the XL 300 secondary coner crusher and the vibrating screen undersize joins the secondary crushed product and the tertiary crushed product on a conveyor to another vibrating screen. The oversize from the second vibrating screen is co ........

Recoveries & Grades:

CommodityParameter201920182017201620152014
Copper Head Grade, % 0.820.860.890.880.971
Copper Recovery Rate, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Copper Concentrate Grade, %  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Head Grade, g/t 1.571.551.641.46
Gold Concentrate Grade, g/t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Head Grade, g/t 11.210.711.29.5
Silver Concentrate Grade, g/t  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Gold Recovery Rate, %  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Production:

CommodityProductUnits201920182017201620152014
Copper Payable metal kt  ......  Subscription required  ......  Subscription required7.57.9
Copper Concentrate kt  ......  Subscription required  ......  Subscription required3434133
Gold Payable metal koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Silver Payable metal koz  ......  Subscription required  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Operational Metrics:

Metrics201920182017201620152014
Ore tonnes mined  ......  Subscription required  ......  Subscription required  ......  Subscription required935 kt449 kt426 kt
Waste  ......  Subscription required  ......  Subscription required  ......  Subscription required5.9 Mt4.5 Mt
Tonnes processed  ......  Subscription required  ......  Subscription required  ......  Subscription required1,034 kt
Annual mining capacity  ......  Subscription required  ......  Subscription required  ......  Subscription required
Subscription required - Subscription is required.

Reserves at December 31, 2019:

CategoryTonnage CommodityGrade
Proven 7.4 Mt Copper 0.73 %
Proven 7.4 Mt Gold 1.2 g/t
Proven 7.4 Mt Silver 7.4 g/t
Probable 4.3 Mt Copper 0.7 %
Probable 4.3 Mt Gold 1.05 g/t
Probable 4.3 Mt Silver 6 g/t
Proven & Probable 11.7 Mt Copper 0.72 %
Proven & Probable 11.7 Mt Gold 1.15 g/t
Proven & Probable 11.7 Mt Silver 6.9 g/t
Measured & Indicated 13.6 Mt Copper 0.78 %
Measured & Indicated 13.6 Mt Gold 1.3 g/t
Measured & Indicated 13.6 Mt Silver 7.9 g/t

Financials:

Units202020162015
Capital expenditures (planned) M USD  ......  Subscription required
Capital expenditures M USD  ......  Subscription required 9  
Revenue M USD  ......  Subscription required 16  
Operating Income M USD  ......  Subscription required 1  
Gross profit M USD  ......  Subscription required 28  
EBITDA M USD  ......  Subscription required 5  
Subscription required - Subscription is required


Heavy Mobile Equipment:

Mine Management:

Job TitleNameProfileRef. Date
....................... Subscription required ....................... Subscription required Subscription required May 30, 2020
Subscription required - Subscription is required.

Staff:

EmployeesYear
Subscription required 2016
Subscription required 2015

Corporate Filings & Presentations:

DocumentYear
................................... Subscription required 2019
................................... Subscription required 2018
Annual Report 2017
Annual Report 2016
Corporate Presentation 2016
Press Release 2015
Annual Report 2014
Other 2011
Subscription required - Subscription is required.

Aerial view:

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