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Author Archives: Redaktion

Testing phase: Bauer Spezialtiefbau constructs cut-off wall elements in geothermally active ground for the first time as part of gold mine expansion

One of the largest gold deposits in the world is located on the volcanic island of Niolam, the main island in the Lihir archipelago of Papua New Guinea. The mine was discovered in 1982 and the sought-after precious metal has been extracted in open-cast mines for nearly 25 years – now reaching a depth of up to roughly 300 m ...

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Red Dog Mine Alaska: Ground improvement in permafrost

Red Dog Mine, one of the world’s largest zinc mines, is located in the north-west of Alaska, around 170 km north of the Arctic Circle and nearly 1,000 km to the north-west of Anchorage. The mine has been operating since the late 1980s with around 10 % of the world’s zinc extracted here in open-cast mining. Its location in the Arctic ...

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Firing production economically

For an economical and sustainable operation, the Austrian plant Retznei of Lafarge Zementwerke GmbH relies on alternative fuels and raw materials to ignite the new calciner (Figure 1). In order to transport, store and dose the kiln-ready material efficiently, the manufacturer awarded BEUMER Group, Beckum/Germany to develop an individual single-source solution. The core of this system solution is a U-shape ...

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New Doppelmayr material ropeway takes up operation in Colombia

Zijin-Continental Gold Sucursal Colombia is developing the Buriti-cá gold mine (Figure 1) in the northwest of Columbia, approximately 72 km from the city of Medellin. The area where the mine is located is mountainous and therefore logistically challenging. The reusable residues of the gold extraction process are used in an underground backfill, which is why they must be taken from ...

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Everything depends on correct positioning

The so-called Terra Invader systems can penetrate up to 8000 m into the earth in order to tap oil, gas or geothermal resources (Figure 1). The latter are becoming more and more important in times of increasingly scarce fossil resources. This is down to their high availability: there are huge amounts of geothermal energy around the world. The market leader for ...

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Sandvik introduces a 16 l Stage V engine for its largest truck Toro™ TH663i

Sandvik Mining and Rock Solutions has released a new engine option for its largest truck, Toro™ TH663i (Figure 1). This fuel efficient 16 l Stage V engine from Volvo Penta is powerful and reliable, delivering 585 kW output. The engine and the truck have been designed to work together seamlessly, for strong performance in underground mines. The Toro™ TH663i truck’s ...

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Sandvik jaw crushers now available as a plug-and-play solution with enhanced safety features

Sandvik Rock Processing Solutions’ jaw crushers are now delivered with everything for plug-and-play installation (Figure 1). Quarry and mine owners will find it easy to install and run primary crushing applications in minimum time while ensuring maximum efficiency. Quarries and mines need a crushing solution that is not only tough, durable and reliable, it should be easy to get up ...

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TAKRAF Group develops new and improved DELKOR BQR flotation cell with “MAXGen” mechanism to serve the minerals industry

Maximizing the sustainable recovery of minerals has become a critical success factor, at a time when the efficient recovery from less rich ores, aging or secondary deposits is one of the mining industry’s key challenges. TAKRAF Group, Leipzig/Germany, with its well-known DELKOR brand for liquid/solid separation and beneficiation equipment, has developed new generation BQR flotation cells with the proprietary MAXGen ...

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ScrapeTec conveyor belt seal for the Chuquicamata mine

ScrapeTec Trading GmbH in Kamp-Lintfort/Germany delivers now to the big players, to the very large mines in Chile. AirScrape, the new contact free seal skirting is listed by CODELCO and was ordered directly from the Chuquicamata mine. CODELCO Chuquicamata is one of the most important copper producers in the world. The performance of the new conveyor skirting “AirScrape” convinced CODELCO ...

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RAG-Stiftung defies the pandemic – foundation model proves itself robust and capable of handling a crisis

The year 2020, a year defined by the coronavirus pandemic, has been very successful for RAG-Stiftung, Essen/Germany, despite the resulting challenges. The Board of Management of the foundation communicated this on 9th June 2021 as part of the Annual Press Conference at the Zollverein World Heritage Site (Figure 1). At the end of 2020, the assets of RAG-Stiftung exceeded the ...

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