Tau-Ken Altyn LLP Gold Refinery
The enterprise was built in 2013 as directed by the instruction of the Yelbasy for refining gold-bearing raw materials with a nominal production capacity of 25 tons of refined gold and 50 tons of refined silver per year. At that, the production and technological potential is sufficient to produce 70 tons of gold and 400 tons of silver per year.
Tau-Ken Altyn refinery was commissioned in November 2013 and carries out activities for processing of gold-bearing raw materials (cathode and placer gold, jewelry and technical scrap, Dore alloy with a minimum gold content of 10%).
The final products within the priority state for the purchase of refined gold are sold to the National Bank of the Republic of Kazakhstan as a matter of priority to replenish the gold and foreign exchange reserve.
The plant is located on the territory of the industrial park – Astana – New City Special Economic Zone.
The production and engineering personnel of the plant are staffed with qualified personnel with extensive experience in the field of precious metal enrichment and refining, as well as have undergone practical training at enterprises in Italy and Russia. The plant currently employs 73 people.
The plant produces:
• refined gold with a quality of 99.99%, in the form of standard bullions weighing 12 kg, 100 grams, 250 grams, 500 grams, 1,000 grams weighted bullions, granules;
• refined silver with a quality of 99.99%, in the form of standard bullions weighing 30 kg, 100 grams, 250 grams, 500 grams, 1,000 grams weighted bullions, granules.
The refinery’s technology is developed in accordance with international innovative methods of refining precious metals, which are equal to world leaders.
When choosing a refining technology, one of the main selection criteria was the environmental friendliness of the processes used. In this connection, the technology of the electrochemical method of refining precious metals has been selected, which, in combination with the equipment used in the technological process, ensures absolute environmental safety.
Thus, in 2015, the plant’s technological line was supplemented with the latest innovative ACIDLESS SEPARATION unit, which provides the process of vacuum distillation of silver from gold-silver alloys. The technological process solves a number of important problems and has economic advantage, achieved due to the high processing speed of gold-silver alloy, high recovery of precious metals.
In 2017, application of the equipment for hydrometallurgical gold precipitation was completed, which will expand the range of raw materials for gold processing, and also reduce the cost of some of the products. This equipment made it possible to process additional types of raw materials, such as cathode gold, prepared electronic scrap and off-balance tails.
Further development of the plant provides for the production of higher value added products, in particular, the manufacture of blanks for the jewelry and technical industries, as well as the manufacture of measured bullions (from 1 to 100 grams) to be sold to the population as investment gold. For these purposes, during the design of the plant, areas for further prospective development were provided.
On September 19, 2019 Tau-Ken Altyn LLP received the Good Delivery certificate. Also in 2019, the planned level of the design capacity of gold refining production in the amount of 25 tons was reached.
The following events are planned for 2021:
1) completion of the implementation of the automation system for production accounting of precious metals in all areas of the technological process with the integration of the accounting system;
2) development of a strategy for the development of refining production of Tau-Ken Altyn LLP;
3) development of technology for processing solid industrial waste, taking into account the results of research and development.
Production of refined gold and silver by Tau-Ken Altyn LLP:
|Finished products||2014-2020 actual||2014 actual||2015 actual||2016 actual||2017 actual||2018 actual||2019 actual||2020 actual||2021 plan|
Tau-Ken Temir LLP Silicon Plant
In order to reanimate and re-launch idle production, in accordance with the decision of the Council for Mining and Metallurgical Activities under the President of the Republic of Kazakhstan dated December 5, 2013, Tau-Ken Samruk JSC was appointed as the operator for implementation of the investment and strategic project “Preparatory work and launch of a plant for the production of metallurgical silicon in the Karaganda region”. Tau-Ken Temir LLP was established to implement this project, which is a 100% subsidiary of JSC NMC Tau-Ken Samruk.
Description of the plant:
The design capacity of the plant is 24 thousand tons of technical silicon per year.
The plant is equipped with the equipment of the German company SMS SIEMAG and installed two ore thermal furnaces (OTF) with capacity of 12 thousand tons of silicon each.
The production of technical silicon in Kazakhstan is a new industry, the development of which has begun recently. At the moment, Tau-Ken Temir LLP is the only producer of technical silicon in Kazakhstan. The main raw material, quartz, is supplied from the Aktas deposit of the Karaganda region, owned by Silicon Mining LLP (a subsidiary of the Company).
In September 2014, ore thermal furnace No.1 was put into operation after a long downtime.
In September 2015, ore-thermal furnace No.2 was commissioned after complete relining of the furnace bath.
In 2016-2017, 2 stages of the Partnership investment program were implemented for the acquisition and modernization of production equipment and special equipment.
At the same time, starting from 2019, decline in prices for finished products was observed on the market, in connection with which the Management Board of JSC NMC Tau-Ken Samruk decided to suspend the production activities of the silicon plant with the optimization of the staff number, taking into account the conservation of production and industrial safety, safety of property of the industrial complex.
Production of commercial silicon (fr. 0-100 mm) by Tau-Ken Temir LLP:
|Finished product||2014-2020 actual||2014 actual||2015 actual||2016 actual||2017 actual||2018 actual||2019 actual||2020 actual||2021 plan|
|Silicon, thous. tons||76.7||1.8||11.1||19.3||15.9||14.4||14.1||–||–|
At the moment, JSC NMC Tau-Ken Samruk is actively working to attract investors to the project, and is also actively negotiating with financial institutions to provide funds for the launch of production.
Mining of Gangue Quartz at the Aktas field in the Karaganda Region by Silicon Mining LLP
Silicon Mining LLP was established on December 22, 2008 to organize mining and processing of gangue quartz – raw material for Tau-Ken Temir LLP silicon plant.
On December 09, 2016, 90.1% of the share in the authorized capital was bought by JSC NMC Tau-Ken Samruk. On January 31, 2018, permission was received to redeem 9.9% of the share in the authorized capital of Silicon Mining LLP in favor of JSC NMC Tau-Ken Samruk.
Subsoil use contract No.2810 dated October 09, 2008. Production period is 25 years (until 2033).
The Aktas quartz deposit is located in Ulytau district of Karaganda region, 130 km north-west of Zhezkazgan city, 1.5 – 2.0 km from the Aktas village.
To supply the mining enterprise with electricity, 110 and 35 kV transmission lines were brought up to the field.
As of September 01, 2019, the reserves of the field are estimated in the following volumes as indicated in the table below.
|Mineral resource||Unit of measure||State of balance stocks by categories|
|Crystalline raw materials||ton||–||791.1||791.1||396.0|
|Clear quartz for melting||ton||–||424.0||424.0||97.8|
|Gnague quartz||thousand ton||1168.9||2641.8||3810.7||304.2|
In addition, starting from 2019, the market saw decrease in silicon prices, therefore the Management Board of JSC NMC Tau-Ken Samruk decided to suspend production activities of Aktas field with the optimization of the staff size, taking into account the conservation of production, fire and industrial safety, safeguard of assets of the mining complex.
Mining volumes at Aktas field of Silicon Mining LLP:
|Finished products||Unit of measure||2017-2020 Actual||2017 Actual||2018 Actual||2019 Actual||2020 Actual||2021 Plan|
|Quartz production||thousand ton||295.3||32.9||149.6||112.8||–||–|
|Drilling and blasting works||m3||121.4||11.9||61.8||47.8||–||–|
|Finished products||thousand ton||129.4||27.4||49.0||53.0||–||–|
At the moment, JSC NMC Tau-Ken Samruk is working actively to attract investors for the project and is negotiating actively with financial institutions to provide funds to launch production.
LLP JV Alaigyr
Limited Liability Partnership “Joint Venture “Alaigyr” was established on October 20, 2011, to implement the project “Mining and Processing of Polymetallic Ores at Alaigyr Deposit in Karaganda Region”.
Alaigyr deposit is located in Karaganda region, on the border of Karkaraly and Shet regions, in 130 km south-east from Karaganda city. Aksu-Ayuly village, the administrative center of Shet region, is located in 60 km to the south-west.
Construction and commissioning of the mining and processing plant for the production and processing of polymetallic ores of Alaigyr deposit with the capacity of 900 thousand tons of ore per year is of great strategic significance for the development of industry and the social and economic progress of the region as a whole.
To implement this project, the following facilities were built and put into operation: Akchatau Substation, 110 kV high-voltage line (143 km long), wells (3 pcs.), a road from Kamkor settlement to Alaigyr deposit and the frame of the processing plant.
Documents are being drawn up for the commissioning of a railway siding with a flotation concentrate warehouse.
Mining preparatory work was carried out in the amount of more than 5 million m3.
At the moment, construction of infrastructure facilities is underway at Alaigyr deposit, including: a production and administrative building, fuel and lubricants warehouse, infrastructure, water pipe, rotational camp. The EPC contract was concluded for design, purchase and supply of equipment, construction and installation work.
After putting the facility into operation, more than 500 jobs will be created at the facility. It is planned to attract mainly the local population with organization of training and subsequent employment at the enterprise.
Reaching the design capacity is scheduled for Q4 2022.
Severniy Katpar LLP
The main activity of the Limited Liability Partnership is combined exploration and production of tungsten-molybdenum ores at the Severniy Katpar and Verkhneye Kairakty deposits.
- In relation to the Severniy Katpar deposit, following the geological exploration works, appraisal of mineral resources under the JORC Code and re-appraisal of reserves according to the State Committee on Reserves were completed, technological regulations for design of the mining and metallurgical complex were developed, and at the moment, the work on development of a preliminary feasibility study for investing the mine construction is in progress.
- In relation to the Verkhneye Kairakty deposit,following the geological exploration works, appraisal of mineral resources under the JORC Code was completed, the work on re-appraisal of reserves according to the State Committee on Reserves is in progress.
ShalkiyaZink LTD JSC
ShalkiyaZink LTD JSC is a mining company with exploration and production rights, owns the Subsoil Use Contract for the extraction of polymetallic ores at the Shalkiya deposit, as well as the Contract for the extraction of groundwater at the sections of wells No.1-8 of the Shalkiya deposit in Kyzylorda region of the Republic of Kazakhstan.
The total zinc reserves of the Shalkiya deposit, according to the BrookHunt Research Company (report as of November 2006), account for more than 30% of all reserves of the Republic of Kazakhstan and rank 5th among the largest deposit in the world with proven and probable reserves of 6.5 million tons of zinc according to the JORC classification.
The Shalkiya lead-zinc deposit was discovered in 1963. Exploration of the deposit began a year later, and over the next forty years was periodically renewed. Ore was mined at the deposit from the mid-1980s and up to 2008, but due to serious surges in world prices for metals throughout the entire existence of the mine, mining was not regular, and work was repeatedly stopped.
At one time, great hopes were pinned on the expansion of the deposit: it was planned to build three mines, which, unfortunately, were never equipped.
In 2008, the development of the project was prevented by the global financial crisis and construction was postponed.
Nevertheless, plans were made to expand production and build a processing plant at the Shalkiya field. To this end, studies were carried out in 2016 to confirm the reserves at the field:
Micon International performed Mineral Resource Assessment for the Shalkiya lead-zinc deposit for ShalkiyaZink LTD JSC, in accordance with the JORC Code (2012). Also, supporting technical report “Estimation of Reserves of the Shalkiya Lead-Zinc Deposit” was prepared.
ShalkiyaZink LTD JSC hired the German company Engineering Dobersek to develop the technological regulations for a concentrating mill with the capacity of 4 million tons per year for processing of lead-zinc ore from the Shalkiya deposit. The regulation was developed on the basis of the latest research carried out by Engineering Dobersek, taking into account numerous studies performed by various organizations of Russia, near and far abroad, as well as the practice of industrial processing of ore at the Australian processing plant “MMG Century”.
At the beginning of 2020, under the leadership of the National Mining Company “Tau-Ken Samruk”, a project group was created consisting of highly professional civil engineers, geologists, mine builders, technologists, IT and other narrow specialists.
A new Strategy for the implementation of the project was adopted, in particular, the progress of the design and construction was analyzed, problematic issues affecting the quality and timing of the project were identified. Thanks to the serious preparatory work of the project team, in May 2020, the design of the concentrating mill at the Shalkiya field began, as well as the adjustment of documentation for the mining part of the Shalkiya project.
The commercial products of the concentrating mill at the Shalkiya deposit are:
– lead flotation concentrate corresponding to the KC-7 grade;
– zinc flotation concentrate corresponding to the KЦ-4 grade;
The concentrating mill for processing polymetallic ore is planning to use modern, high-tech equipment with a high degree of automation for the stable operation of the technological process, achieving the required production indicators and minimizing the impact on the environment.
The enrichment process includes the following stages:
– coarse, medium, fine crushing in jaw and cone crushers and fine crushing in abrasive high pressure grinding rollers (HPGR);
– selective flotation of lead and zinc;
– fine regrind of the concentrate of the main zinc flotation
Crushing and grinding processes are used to achieve the required particle size before minerals are exposed, a factor that is critical for the subsequent flotation process.
Flotation process based on the difference in the physical and chemical properties of the surface of minerals. To separate valuable minerals from gangue minerals, flotation beneficiation uses chemicals called flotation reagents to regulate the physical and chemical reactions of the process. The range of used flotation reagents is traditional for direct selective flotation of lead-zinc ores.
The design scheme for ore processing obtains three enrichment products:
– lead concentrate;
– zinc concentrate;
– flotation tailings.
Both concentrates go through the dehydration stage. Lead and zinc concentrates, after thickening and filtering to optimum moisture content, are packed in big bags or in bulk in wagons for subsequent transportation to the consumer. The flotation tailings are sent without dehydration to the tailings dump for further storage.
Today, as part of the design of a mining and processing plant with production capacity of 4 million tons of ore per year, the process of the project digitalization is considered, which implies a high level of automation (the level of the automated process control system), the construction of BIM models (CAD-level), the MES-level is worked out with the transition to ERP systems. Innovation and digitalization of processes play an important role in the development of the industrial sector in Kazakhstan and affect the improvement of production quality and risk reduction.