Tag Archives: cemented carbide

Rio Tinto Kennecott joins Terelion’s Circularity Program focused on cemented carbide recycling

Rio Tinto Kennecott’s (Salt Lake City, USA) site has joined Terelion’s Circularity Program in what the drill bits company says marks a significant milestone in delivering on its ambitious goal of achieving circularity throughout the whole value chain.

Cemented carbide is a key component in high-quality drill bits. One important ingredient in the manufacturing is tungsten, a rare mineral difficult to come by. Through Terelion’s Circularity program, it is now possible to recycle all cemented carbide inserts on a drill bit back to virgin material – pure tungsten – which can then be used in manufacturing new cemented carbide inserts. Tools from recycled solid carbide require 70% less energy which results in 40% less CO2 emissions.

Graeme McKenzie, Operations Director at Terelion, said: “At Terelion, we are committed to working towards a more sustainable mining future. Doing so will benefit all: our planet, our customers and our business. Our aim is 90% circularity by 2030. Key in achieving this is our Circularity Program. We are very happy that Rio Tinto Kennecott shares this ambition and has decided to join our program – a clear testament also to their commitment in this area. We look forward to a successful partnership that ultimately encourages others to join this exciting initiative.”

The process of separating cemented carbide inserts from the steel body of the drill bit is done through an elaborate heating process. The inserts are then gathered and shipped to Terelion’s recycling partner – saving more than 90% of shipping emissions in the process (compared to shipping the complete drill bits).

The used products are collected on site at Kennecott and transported to a partner where the dull tungsten carbide drill bits are separated from the steel. The used carbide inserts are then sent to a process plant in Austria where they are transformed back to its original powder form, and then made into new tungsten carbide inserts that are used as the raw material for making new drill bits.

The Terelion Circularity program for tungsten carbide drill bits at the Rio Tinto Kennecott mine is estimated to reduce CO2 emissions related to carbide drill bits by 64%. The energy consumption will be reduced by 70% compared with sourcing tungsten carbide via conventional mining methods.

Rio Tinto Kennecott General Manager Minerals, Brendan Murphy, said: “We’re always looking for new and inventive ways to reduce our carbon footprint and cut waste. We are excited to support this innovative circularity program and look forward to seeing the difference it can make.”

A ceremony taking place at the Rio Tinto Kennecott Mine on May 23, 2023, marked the start of the circularity program between the two companies.

Sandvik launches Power Carbide to highlight rock tool capabilities

Sandvik has chosen to gather its range of rock tools with cemented carbide into a new group called Power Carbide.

The range comes with a combination of strength, hardness, toughness and wear resistance. All of these properties significantly enhance both drilling performance and cost effectiveness, Sandvik said.

Sandvik was the first company to produce rock tools with cemented carbide, which is one of the most successful composite engineering materials ever produced, it said.

Marie Lundbäck, R&D Manager Hard Materials, Rock Tools, Sandvik Mining and Rock Technology, said the introduction of PowerCarbide enables the company to showcase the importance of carbide grades in drilling operations. “Our key strengths in this area lie in our innovations in advanced material compositions and production processes,” she said.

Sandvik’s leading position in the cemented carbide tool market is down to a focus on R&D, continuous investments and close customer collaboration, according to the company. Sandvik also controls its entire production chain – from its own tungsten mine to the production of drill bits – which is unique in the market, it said.

Lundbäck said: “As we have the most comprehensive range of advanced carbide tools, we can offer our customers tailored solutions to meet their specific drilling needs. At the same time, we are able to contribute to a more sustainable future through our unique global carbide recycling system.”

The Sandvik PowerCarbide family currently consists of the grades DP55, DP65, GC80, SH70, XT49, XT70 and XT90. New grades will be launched and added to the family as Sandvik continues to develop the range, it said.