Tag Archives: Chuquicamata

Highfield Resources engages EPOS-TUNELAN joint venture for Muga potash decline work

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Highfield Resources has signed an agreement with the Portuguese/Spanish joint venture, EPOS-TUNELAN, to carry out the declines and underground mining infrastructure on the Muga-Vipasca potash project in Spain.

EPOS-TUNELAN, the joint venture formed by mining specialist contractors EPOS-Empresa Portuguesa de Obras Subterráneas S.A. and TUNELAN-Obras Subterráneas S.A., is expected to use trackless mobile equipment for both decline excavations. Three roadheaders and one conventional excavator in combination with a boom jumbo and two bolters will be utilised for excavation, face drilling and rockbolting. While four 30 t low-profile mining haul trucks and one 14 t LHD will be used to transport material to surface.

The development excavation will be supported by sprayed concrete and rock bolts, with the thickness of sprayed concrete and bolt spacing having been determined by the geological surveys developed by the drilling undertaken and will be confirmed during construction with specific scheduled horizontal drilling.

The value of the decline contract is €48 million ($52.5 million) which represents 11% of the phase 1 capital expeniture of €449 million and just under a third of the total planned contract-construction budget for Muga-Vipasca.

Muga-Vipasca is a two-phase project, which will produce a total of 1 Mt/y of muriate of potash, according to Highfield. It plans to use conventional underground room and pillar mining, with the declines accessing shallow
mineralisation. The material will then undergo conventional flotation and crystallisation processing.

The contracting strategy for the project will employ an owner-managed project delivery model that envisages the construction of the declines and the underground mining infrastructure to be undertaken by a specialist mining contractor and the civil works by a general contractor.

The scope of the EPOS-TUNELAN contract covers:

  • The construction of two parallel declines, each 2.6-km long, with a cross section of 32 sq.m and a 15% slope to access the mineralisation at a depth of 350 m;
  • The construction of crosscuts that connect the parallel declines and a bypass gallery for the mine’s main fans;
  • The construction of the declines’ pumping stations, which will be used to collect and pump out any water that could infiltrate into the declines;
  • The construction of the surface facilities to treat the fresh and saline water collected in the declines during construction;
  • The construction of the underground mining infrastructure, which includes 2 km of underground drifts within the potash deposit to access the production panels, and where the principal conveyor belts will
    be located;
  • The ore transfer room, where ore is transferred via conveyor belts from the various mining areas to the main decline conveyor belt, hauling the ore directly to the process plant;
  • The electrical room, from where the electrical network will be connected to the mine;
  • The backfill transfer room, where the backfilling material is distributed to the different conveyor belts and transported to the different mining areas; and
  • Other facilities such as the water tank room, from where the brine water network will be distributed to the mine.

The design and engineering of the declines and underground infrastructure was developed by international engineering company Systra-Subterra, which specialises in underground projects. Systra-Subterra, which has wokeed on mines like Los Bronces and Chuquicamata in Chile, will provide technical support and supervision during the construction of the declines and underground infrastructure at Muga.

The duration of the construction agreed with EPOS-TUNELAN covers 26 months and is consistent with the overall schedule of the project.

Once the bottom of the declines is reached, the main conveyor belt will be installed in the eastern decline, which will allow the continuation of the excavation works for the infrastructure by hauling the material directly
to the surface.

Highfield and EPOS-TUNELAN are negotiating the purchase of equipment which is suitable not only for the declines’ construction but for mining as well, especially road headers, trucks, loader and bolters, among
others.

Works are expected to commence in the first half of this year upon completion of funding and a final investment decision.

TAKRAF and ABB renew gearless conveyor drive technology partnership

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TAKRAF and ABB have renewed their ongoing strategic partnership regarding the deployment of gearless conveyor drive (GCD) technology on TAKRAF bulk material handling solutions to enable a more sustainable and resource-efficient future, the companies say.

The partnership, which dates back to 2011, acts as a commitment to both groups’ efforts in achieving a more sustainable and resource efficient future, regarding the deployment of GCD technology.

Gearless drives eliminate the need for a gearbox, hereby significantly reducing the number of wear parts, which results in increased efficiency and reliability, as well as reduced maintenance requirements. Further advantages include a considerable reduction in the drive system’s footprint and emissions. In fact, for a large copper mine in Chile, studies showed that CO2 emissions were reduced by 66% as compared with diesel truck engines for the same copper production volume, TAKRAF states.

In 2019, TAKRAF delivered equipment for the principal ore transport system for Chuquicamata, one of the world’s largest copper ore mines, moving ore extracted underground to an above-ground processing plant using GCD technology (11 x 5 MW gearless synchronous motors). This system, boasting a total installed drive power of 58 MW, transports crushed copper ore from underground storage bins to the surface along a 7 km underground tunnel that overcomes 1 km of vertical elevation. Once on the surface, the ore then travels along an overland conveyor that transports it the final 6 km to the distribution silo.

Thomas Jabs, TAKRAF Group CEO (third from the right, shaking hands with Frank Kschamer (ABB Head of Sales Mining Germany)), said: “We are proud of our ongoing partnership and association with our drive technology partner, ABB. This is a relationship that dates back more than 12 years and has resulted in some incredible technology achievements, not to mention delivery of the world’s most powerful belt conveying system at Chuquicamata using GCD technology. GCDs bring numerous benefits, which are important to us as a company and the complete solution offering we present to our clients. With decreasing ore grades, ever-deeper mines and a general tendency to move from an open-pit operation to underground, powerful, efficient and small footprint conveyor drives will only become more important in an industry in which safety and sustainability are also increasingly important.

“We look forward to this new chapter and, together with ABB, look forward to future GCD installations.”

Master Drilling’s Mobile Tunnel Borer heads to Anglo’s Mogalakwena mine

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Master Drilling is readying its Mobile Tunnel Borer (MTB) technology for a contract at Anglo American Platinum’s Mogalakwena mine in South Africa.

The company, which revealed the news during its interim results presentation, said on-boarding for this project deployment was underway, with the start of “decline excavation” due by the end of the year.

Anglo American Platinum said in its own interim results recently that it was working on feasibility studies on the future of Mogalakwena, with completion of these studies expected at the end of 2021. Decisions on the pathway forward are expected shortly after this, however, one of the current key milestones at the asset includes progressing an underground exploration decline.

Master Drilling Executive Director, Koos Jordaan, said during the presentation that the contract with Anglo American Platinum is for a “turnkey operation” with Master Drilling providing capabilities in terms of construction, logistics and project management, in addition to its normal excavation services.

The MTB is a modular horizontal cutting machine equipped with full-face cutter head with disc cutters adapted from traditional tunnel boring machines. Unlike these traditional machines, it is designed to work both on inclines and declines, with the ability to navigate around corners and construct 5.5 m diameter decline access tunnels.

One MTB unit was previously scheduled to carry out a 1.4 km project at Northam Platinum’s Eland platinum group metals operation in South Africa, however this was cancelled in March 2020 due to the pandemic. This deployment followed testing of an MTB unit in soft rock at a quarry just outside of Rome, Italy, in 2018.

Alongside news of this latest MTB deployment, Master Drilling said in its results that it was studying the potential to deploy two of these MTB units in tandem for twin-decline access as part of the technology’s second-generation developments.

“We can already see the benefit of utilising two of these machines to do a twin-decline access to an orebody,” Jordaan said.

Looking to vertical developments, Master Drilling reported that it had received shareholder funding approval from the Industrial Development Corporation for the latest work on its Shaft Boring System (SBS), designed to sink 4.5 m diameter shafts in hard rock down to 1,500 m depths.

IM witnessed the main cutting mechanism of what was previously billed as being a 45-m long, 450-t machine at the back end of 2019.

The company has since said it will introduce a “smaller scope system” as part of its introduction to the industry.

While busy on the latest slimmed down design of the SBS, Master Drilling has signed a letter of intent with a prospective South Africa project that could see a machine start sinking activities in the first half of 2022, Jordaan said.

Outside of these developments, Master Drilling reported on several contract awards across the globe, including a three-year raiseboring extension with AngloGold Ashanti in Brazil, a joint venture agreement with Besalco Construction to work on Codelco’s Chuquicamata copper mine, an executed contract with Glencore’s Raglan mine in Canada, an agreement with Zimplats in Zimbabwe and a “long-term contract” on the Khoemacau copper-silver project in Botswana.

Finning captures large Cat equipment order from Codelco’s Andina, Chuquicamata mines

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Caterpillar’s relationship with Codelco in Chile continues to strengthen with the OEM, through its Finning dealer, set to deliver mining support equipment and underground loaders to two of the copper miners’ operations.

The orders, revealed in Finning’s June quarter 2021 results, contributed to a building equipment backlog in mining and construction registered during the three-month period in South America.

New equipment sales were up 48% year-on-year in the June quarter in South America and up 14% from the March quarter of this year, driven by improved market activity, mostly in construction, Finning noted.

Finning’s backlog in South America included the Codelco orders.

First was a recently awarded order for Caterpillar support equipment from Codelco’s Andina mine, valued at C$40 million ($32 million), for delivery in the first half of 2022. In addition, the company plans to provide 27 Caterpillar R3000H underground loaders to Codelco’s Chuquicamata mine, with 10 of these machines included in its June quarter backlog.

The 20 t class R3000H was launched in 2012 and remains Cat’s largest model. It replaced the R2900 XTRA, providing added value for hard rock mine operators with a significant increase in truck loading capacity, being able to three pass load 60 t class trucks, and having enhanced digging and breakout performance, faster speeds on grade, a strengthened front frame, and an available Ventilation Reduction Package. Since then there have been a number of deployments of the LHD but there are only a few underground mines in the world with a potential requirement for large numbers of loaders of this class at one operation. One of these is Codelco’s new Chuquicamata Underground blockcave copper mine. This is one of the largest single large LHD orders ever made and will help the mine achieve its intended production rate of 140,000 t/d which is a rate on a par with sister operation and the world’s largest existing underground copper mine, El Teniente. Chuqui Underground includes four levels of production; a 7.5 km main access tunnel, five clean air injection ramps and two air extraction shafts. It will produce 366,000 t of fine copper and more than 18,000 t of fine molybdenum per year & extending Chuqui’s minelife to 2060.

Overall, Finning registered June quarter revenue of C$1.8 billion and net revenue of C$1.7 billion, up 30% and 28%, respectively, from a year earlier when COVID-19-related reductions in market activity hit.

All regions delivered a strong quarter, demonstrating operating leverage in a recovering market, Finning noted. June quarter EBIT as a percentage of net revenue was 9.3% in Canada, 9.8% in South America and 5.3% in the UK & Ireland, representing a step-up in profitability levels for all regions, the company said.

The company’s consolidated equipment backlog at June 30, 2021, increased to C$1.4 billion, from C$1.2 billion at March 31, 2021, with order intake in Canada and South America outpacing deliveries in the quarter, Finning said.

“We are pleased with our strong execution and results in the second (June) quarter,” Scott Thomson, President and CEO of Finning International, said. “With a reduced cost base and more efficient operations and supply chain, we are confident in our improved earnings capacity, which puts us firmly on track to achieve the mid-cycle targets we set out during our Investor Day in June.”

 

Cedric Minería selects CDE EvoWash wet processing tech for Buin sand, gravel ops

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Chilean mining and aggregates company, Cedric Minería, has announced a major overhaul of its aggregates business following a significant investment in advanced wet processing technology from CDE, the Belfast-based company says.

The family business, which expanded into aggregates production in 2003, has revealed plans for a new wet processing solution at its Buin operation.

Established in 1981, Cedric Minería specialised in the production of calcium carbonate and sulphur products before diversifying its interests and launching its silica operation, Mina Nancy, near the city of Calama in Antofagasta Region.

It soon secured listing as a strategic supplier of silica to state-owned copper mining company Codelco for its copper smelting plant in Chuquicamata, northern Chile.

Following the success of its silica business, Cedric Minería soon after commissioned its first aggregates processing plant in Buin which supplies the local market with a range of washed sand and gravel products for pre-cast concrete, asphalt, pipe bedding and more.

This summer, CDE will commission the EvoWash™ sand wash plant and an AquaCycle™ water management system at the company’s Buin site, replacing their existing washing screws.

Using CDE cyclone technology, the new plant will enable Cedric Minería to produce two grades of high quality, in-spec fine sands: 0-5 mm and 0-8 mm.

A compact, modular sand washing system, CDE’s EvoWash screens and separates the smaller sand and gravel fractions through an integrated high-frequency dewatering screen, sump and hydrocyclones which provide control of silt cut points and eliminates the loss of quality fines with significant commercial value.

An alternative to water extraction and the costly process of pumping water to the plant, CDE’s AquaCycle significantly reduces costly water consumption by ensuring up to 90% of process water is recycled for immediate recirculation, the company says. It helps to accelerate return on investment by maximising production efficiency, minimising the loss of valuable fines and reducing water and energy costs. A single, compact and user-friendly unit, it can be applied to high and low tonnages across many market sectors.

Cedric Minería owner, Cedric Fernández, says the investment in CDE technology is a significant step forward for the company.

“We’re making a huge technological leap forward with this new plant. Cedric Minería branched into the aggregates business almost two decades ago and throughout that time we have operated a traditional system,” Fernández said. “The existing plant has served us well, but we need a modern solution that is future-ready. Our latest investment in CDE wet processing technology represents the beginning of a new chapter for our company.”

Fernández says the COVID-19 pandemic had a significant impact on the construction industry but anticipates strong future demand for sand and aggregates to support the country’s public works investments.

CDE Business Development Executive, Gustavo Brasil, says older technology is very much under the spotlight for materials processors as they work to remedy inefficiencies.

“Recognising the limitations of the existing setup, the team at Cedric Minería are setting out on an ambitious transformation project to replace a traditional processing plant with a much more advanced and efficient technological solution,” he said.

The CDE solution engineered for Cedric Minería will revolutionise its current process, he added.

“CDE’s Evowash solution will enable Cedric Minería to produce superior fine sands with less moisture content while the AquaCycle water management system will deliver massive efficiency gains by recycling process water and driving down operational costs,” he said.

Monadelphous Group banks engineering work with BHP, Rio and Codelco

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Monadelphous Group Ltd has secured several new construction and maintenance contracts in the resources sector totalling around A$215 million ($163 million).

Included within this slate of new work is a contract for smelter campaign maintenance works at the BHP owned Olympic Dam copper mine in South Australia. Monadelphous said work will commence immediately and is expected to be completed in December 2021.

Monadelphous has also been awarded a two-year extension to its existing maintenance services contract at Olympic Dam. The contract scope includes civil, structural, mechanical, building maintenance and electrical services, as well as the addition of underground rail maintenance services.

In the iron ore sector in the Pilbara region of Western Australia, Monadelphous has been awarded several contracts, including several sustaining capital contracts under its panel agreements with BHP and Rio Tinto; and a contract with Rio for the provision of construction and support services associated with the Gudai-Darri iron ore project, with work expected to be completed by the end of 2021.

In Chile, the company’s maintenance and construction services business, Buildtek, has secured a number of new contracts, including a three-year contract with Codelco for the operations and maintenance of water infrastructure at the Chuquicamata underground mine in Calama. Buildtek has been providing these services on this site since 2018.

In addition, the engineering company has secured two new contracts with Codelco for maintenance activities associated with the concentrator plant at El Teniente mine in Rancagua; and a contract with BHP Minera Escondida for the construction of modularised pump stations and associated infrastructure of the Escondida copper mine in Coloso.

Finally, Monadelphous, in collaboration with global heavy lifting services company Fagioli, has secured a contract with NMT International (Australia) to deliver specialist heavy lifting and haulage services at the Iron Bridge magnetite project, a joint venture between Fortescue Metals Group subsidiary FMG Magnetite Pty Ltd and Formosa Steel IB. The strategic collaboration with Fagioli enables Monadelphous’ specialist Heavy Lift business to increase capacity and broaden capability for the Australian resources and energy markets, it said.

ABB, TAKRAF complete commissioning of Chuquicamata conveyor system

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ABB, working with TAKRAF, has completed commissioning and testing of the world’s highest-powered gearless conveyor drive system at the Codelco-owned Chuquicamata copper mine in Chile.

ABB has provided engineering design, gearless conveyor drives (GCD), electrical equipment for power supply, energy distribution and automation of a new underground and overland conveyor system at one of the world’s largest copper mines.

Chuquicamata is currently transitioning from open-pit to underground mining, with the conveyor system, commissioned in just four months, part of a new underground project that is expected to extend operations for the next 40 years.

Project management and engineering for the full electrical, control and instrumentation scope was led by ABB in Germany, with long spells on site in northern Chile to work side-by-side with TAKRAF to equip the site’s new underground operation with a large conveying system that overcomes an altitude difference of 1,200 m and covers a distance of almost 13 km, ABB said.

The three principle 11,000 t/h conveyors feature GCDs equipped with large ABB AC synchronous motors with a rated power of 5 MW each, resulting in a motor shaft torque of about 900 kNm. With every line in constant use, high availability and low maintenance are essential. Designed with a minimum of transfer stations, just one was required underground, saving significant project cost, ABB said.

Based on continuous conveying technology, the infrastructure is completely truck-less, eliminating the need for 120 large haul trucks. This results in saving around 130 million litres/y of gasoline consumption, bringing the carbon emissions from 340,000 t/y down to 100,000 t/y. It is also the first transportation system in the world to employ premium steel cable belt technology, ST10000, for use on uphill tunnel conveyors, according to ABB.

ABB high power motors in position

“This mega project achieves a number of firsts, from the system’s installed drive power to the application of the ST10000 conveyor belt,” Marc Hollinger, TAKRAF Project Manager, said. “With this project, we firmly establish TAKRAF as one of the world’s only providers capable of delivering a mega project of this nature incorporating advanced technologies that push the boundaries of what has been done before. This is a complex project of the highest magnitude demanding global cooperation between internal and external parties.”

Ulf Richter, Global Product Manager for Belt Conveyor Systems at ABB, said: “This is a new milestone in underground applications for continuous mining. It is the highest drive power ever installed on a conveyor and uses a wide range of features for data acquisition, equipment assessment and process optimisation.

“In piloting this gearless drive application with TAKRAF, we have overcome tremendous technical and logistical challenges due to underground situations, elevation change and capacity requirements.”

ABB liquid-cooled MV voltage-source frequency converters, together with large synchronous motors, deliver a decrease in active and reactive power consumption at the operation. This is highly energy efficient, and without additional network filters, it says.

ABB’s Mining Conveyor Control Program ensures smooth belt operation and safe synchronisation between high power motors and high power hydraulic brakes, necessary for secure operation of steep uphill conveyors. The drive systems also work without mechanic backstops, ABB said.

A novel embedding concept, developed jointly by TAKRAF and ABB, enables straightforward installation and alignment of the GCD motors, saving installation time and longer deployment of maintenance teams. This was considered a major benefit compared with existing GCDs in cantilevered construction, ABB said. The concept also meant motors were 100% factory assembled and tested. They can also be mechanically disconnected from the drive pulley quickly so operations can continue if drive failure occurs. The total installed drive power for the entire system, including multiple feeder conveyors, totals 58 MW, of which there are 11 x 5 MW gearless synchronous motors.

ABB has also installed ABB Ability™ Ventilation Optimizer at Chuquicamata reducing carbon emissions and providing clean air to workers in line with the strict health, safety and environment requirements.

Epiroc to supply equipment, services for Codelco’s Chuquicamata underground mine

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Epiroc is to deliver underground loaders, face drill rigs, rock bolting rigs and mine trucks to the Chuquicamata underground mine in northern Chile following an order from Codelco.

The large equipment order, which comes on top of the signing of a large contract for services at Codelco’s Andina mine and a large order for equipment used at its El Teniente mine, also includes several years of technical support and training. The order is valued at more than $20 million and was booked in April 2020.

Codelco, the world’s largest copper producer, opened the Chuquicamata underground mine in 2019 as it looked to transition the world’s largest open-pit mine into a technologically advanced underground operation. The transformation will extend the mine life by 40 years, according to Codelco.

Helena Hedblom, Epiroc’s President and CEO, said the company was proud to be a key partner of Codelco “as it significantly extends the life of the Chuquicamata mine in the most productive, efficient and safe manner possible”.

Juan Mariscal, Sourcing Category Manager at Codelco, says: “Epiroc was chosen because it complied with all the technical, safety and performance requirements that Codelco demanded for the Chuquicamata Underground Mine project, while being the supplier that provided the best economic proposal for all its equipment as a whole.”

The order includes multiple units of the Scooptram ST1030 and ST18 loader, the Boomer S2 face drilling rig, the Boltec M bolting machine, and the Minetruck MT65 (pictured), the highest payload capacity underground truck in the world.

The machines will be equipped with 6th Sense solutions for automation, connectivity and information management, Epiroc says. The solutions include Epiroc’s Rig Control System, RCS, which makes the equipment ready for automation and remote control, and Epiroc’s Certiq system, which allows for intelligent monitoring of machine performance and productivity in real-time.

Delivery of the equipment will take place later this year.

Codelco to suspend work on Chuqui Underground in response to COVID-19

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Codelco says it will temporarily suspend some of its projects as part of its measures to prevent the spread of COVID-19.

This will affect construction on the Chuquicamata Underground Mine project, which was previously expected to produce 320,000 t/y of fine copper by around 2026; the early works of Rajo Inca, a 70,000 t/y copper concentrate project; and the assembly works of Traspaso Andina, which will see a new transfer system installed at the Andina division.

The decision will strengthen the health security of the divisions since the number of workers on site will be reduced to a minimum, and air and land transfers will be also be scaled back. Codelco said many of its project workers come from different regions of the country, hence the reason to reduce transfers.

The suspension will be carried out gradually, starting March 25, and will last 15 days, Codelco said. In all affected projects, limited staff will be retained to safeguard the security of the facilities and equipment.

Codelco said the measures will have no impact on production of the respective divisions – which continue to operate with increased safeguards – but will see the number of workers circulating decrease.

It added that it will continue to evaluate the implementation of new measures that protect the health of all workers while also maintaining operational continuity.

Codelco El Teniente on its way to fully-automated mining solution, Sandvik says

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Sandvik says it will deliver AutoMine® fleet solutions for underground trucks to Codelco’s El Teniente mine in Chile, continuing the copper miner’s “vision of creating the most advanced underground mines in the world”.

This AutoMine Fleet system is the first step in implementing a fully-automated mining solution using Sandvik trucks at El Teniente, the biggest underground copper mine in the world, Sandvik said.

“Codelco’s goal is to dramatically increase the productivity, safety and efficiency of its operations with AutoMine. Together with the existing OptiMine® system, the mine will become a world-class benchmark,” the mining equipment maker said.

This agreement follows the April announcement that Sandvik will deliver its AutoMine and OptiMine solutions to Codelco’s Chuquicamata mine as it converts the site from open pit to an underground mine. This development is part of Codelco’s 10-year strategic project to extend the life of its existing mines.

Rafael Guzman, Chief Engineer for Automation and Technology at El Teniente, said: “As a state-owned mining company, it is our responsibility to implement technology and solutions that ensure the safety of our people and the sustainability of our mines. Being a good corporate citizen is not negotiable. It is critical to our success.”

Sandvik and Codelco started their automation journeys together at El Teniente with the first-ever AutoMine Loading system installation, in 2004.

Patricio Apablaza, Vice President for Andean and South Cone, Sandvik Mining and Rock Technology, said: “We are proud that Codelco continues to choose Sandvik as a strategic partner for its most innovative projects. Our technology will drive even safer, smarter and more productive mining for Codelco.”

The AutoMine product family allows customers to scale up automation at their own pace, according to Sandvik. The solution covers all aspects of automation, from remote and autonomous operation of a single piece of equipment to multi-machine control and full-fleet automation using automatic mission and traffic control capabilities. AutoMine installations have logged more than 2.5 million hours with zero lost time injuries.

OptiMine, meanwhile, is a suite of digital tools for analysing and optimising mining production and processes. It integrates all relevant data into one source, delivering both real-time and predictive insights to improve operations. “OptiMine is open and scalable, giving customers the flexibility to build at their own speed and incorporate other equipment, systems and networks,” Sandvik said.