Tag Archives: Mining tyres

MAXAM launches its biggest open-pit mining tyre to date

MAXAM has announced the launch of its biggest open pit mining tyre to date, the MS403 59/80R63.

Using pioneering compounding technology and cutting-edge engineering, the MS403 is manufactured in MAXAM’s state-of-the-art radial tyre facility, the company says.

“To meet the most challenging application requirements in the open-pit mining segment, MAXAM has engineered the MS403 to provide the industry with a robust and durable solution for the largest mining haul trucks,” it explained.

To meet the demands that large haul trucks with 63 in tyres face, the 59/80R63 MS403 encompasses a heavy-duty casing and bead construction with advanced compounding technology, the company says. Similar to the large 63 in product lineup in the mining series, the MS403 has undergone advanced engineering, extensive research, and rigorous and repeated global testing.

“With the main goal of providing exceptional performance and lower cost-per-tonne value, MAXAM designed the 59/80R63 MS403 to maximise global mining operation’s productivity,” MAXAM says.

Featuring an aggressive tread pattern that increases shoulder lug stability and reduces irregular wear on the tread, the MS403 59/80R63 is engineered to cope with the most severe challenges on haul roads. The bead construction and casing enables greater load capacity and ground contact, while the MS403 features a deep tread depth for boosted tyre life.

It also contains a heat-resistant undertread for reduced internal heat build-up, increasing the tyre’s TKPH/TMPH. In addition, it features a “unique” two-stage lug to improve self-cleaning capability.

Matt Johnson, VP of MAXAM Mining Group, says: “In the demanding mining global market, the addition of the 59/80R63 size further enhances our flagship mining product line, delivering a comprehensive line of viable solutions to mining applications globally in every size.

“With only a few manufacturers capable of producing the largest and most aggressive 63-in large tyres, this showcases MAXAM’s commitment to play an integral part in the mining industry’s operation and future. We are confident that the largest open-pit mining tyres will perform on par with other tier-one tyres with a more competitive price and value.”

MAXAM adds to MS708 wheel loader tyre offering with two new sizes

MAXAM has added two new sizes to the MS708 series of tyres to provide, it says, a zero-maintenance, three-stage solution to heavy-duty wheel loaders and underground mining applications.

The MAXAM MS708, now available in 30/75-29 & 18.00-25 sizes, is one of the most progressive solid off-the-road tyres on the market, constantly evolving for wheeled loaders operating in the most severe waste, recycling and underground mining applications, the company says. With the addition of the specific sizes, MAXAM can now deliver this design to even more cutting-edge equipment. The 18.00-25 is a size for underground mining, while the 30/75-29 is a solid tyre replacement for heavy-duty loader applications using 29.5R25, 29.5R29, and 875/65R29 sizes.

The low durometer centre compound combined with patented “Double D” apertures allows the MS708 to provide an excellent ride versus two-stage products, according to MAXAM. Featuring a  high traction and wearable tread pattern with 50% tread rubber, the MS708 is billed as delivering the deepest wearable tread in the market. Increasing its footprint as it wears and transitions through four distinct tread patterns, the MS708 ends in a standard L5 pattern to provide maximum tyre life. Incorporating a 25% heat-dissipating body, the MS708 delivers effective heat dissipation and superior ride quality.

The MS708 delivers maximum strength, extreme traction and high value. Manufactured using technologically-advanced equipment and proprietary building and curing processes, the MS708 is made to perform. This process, unlike most manufacturers, eliminates tread separation and delamination defects for extended wear rates, the company says.

Cat offers performance and fuel efficiency boost with new 777E haul truck

Cat has released its new 2021 Cat® 777E haul truck, a machine that, it says, features improvements in power, torque and transmission control to deliver best-in-class productivity, on top of a configurable Eco Mode operation to reduce fuel consumption and drive down cost-per-tonne of material moved.

One of the most popular trucks in its class, the new 777E offers the highest in-class payload of 98.2 t.

It comes fitted with an updated Cat C32 engine that delivers increased horsepower and a 7% improvement in torque to increase hauling performance. Optimised fuel mapping of the engine and adaptive economy mode, meanwhile, determine the most efficient operating point to improve truck fuel economy.

Additionally, operators can select a variable engine derate from 0.5% to 15% in Eco Mode operation to further reduce fuel consumption ‒ and the new automatic engine idle shutdown feature reduces fuel use and wear on engine components, Cat says.

Today’s 777E truck improves productivity by up to 5%, Cat claims.

“The new Advanced Productivity Electronic Control Strategy improves transmission and engine coordination to better utilise available engine power,” the company says. “The result is as much as 7% more torque delivered to the drive wheels for improved hauling performance. The new control system also provides smooth shifting for greater operator comfort.”

The 777E now offers a second gear start when underfoot conditions and grade allow. This feature enables the truck to reach optimum speed more quickly, lowers cycle times and minimises the number of transmission shifts. To save fuel, a new auto neutral idle tool shifts the transmission into a “neutral-like condition” when the truck is idling in drive, Cat explains. The transmission’s speed limit feature allows the machine to run at optimal gear for selected speed.

When working in cold conditions, the new auto-stall feature assists in quickly bringing the transmission to operating temperature at start-up. The effect is less non-productive time and reduced fuel consumed for warm-up, according to Cat.
The 777E also features a new gearshift lever with integrated hoist and park brake controls, which eases operation. The auto hoist feature delivers controlled truck bed descent to prevent body slams and increase component life.

A new touchscreen display features enhanced user interface options, the company says.

“Easy to read, it delivers improved navigation through machine control systems,” Cat says. “The new display allows operators to monitor key machine operating parameters, like tracking payload, as well as upcoming scheduled service intervals.”

Productivity enhancing technology

A host of newly integrated Cat technologies help to improve hauling efficiency and truck longevity on the 777E, Cat says.

The new Truck Production Management System (TPMS) integrates strut pressure sensors and on-board computing and displays truck payload to the loading machine operator. The system helps attain target payload, Cat says.

The Vital Information Management System on board the 777E allows operations to proactively manage machine health and production. Real-time machine performance, operating data and diagnostics are displayed on the in-cab monitor for easy viewing and troubleshooting. Integrated prognostics develop trends from cumulative collected operating data to help increase truck cycle efficiency.

A new “Tonne-Kilometer” feature helps ensure that truck operation falls within the operating range of the tyres. The system monitors payload, speed and ambient temperature to calculate operating conditions, and the operator receives an audible warning when conditions exceed tyre limits.

The updated 777E comes standard with Product Link™ with either cellular or satellite reporting options to meet the needs of the mine. Product Link captures critical machine operating data – location, hours, fuel, etc – and reports it back to the main office through VisionLink®, helping to improve productivity, truck use, safety and maintenance efficiency, Cat says.

Elevated safety

With integrated TPMS, the overload speed limiter works in conjunction with the improved truck payload system to automatically reduce travel speed when the truck is overloaded, according to Cat. Brake actuation is now fully hydraulic and delivers fast response and smooth application.

The new adjustable mirror package for the 777E improves rear visibility for the operator. An optional camera system delivers enhanced visibility for the operator to the machine’s front, rear and sides with the video feed displayed on the in-cab monitor.

Engine crank and machine lockouts disable the engine starter/secondary steering and implements to improve servicing safety, meanwhile. Lockout engagement is conveniently located at ground level and an indicator light display ensures lockout is effectively engaged, Cat says.

The new optional automatic lubrication system provides grease for all lube points on the machine, eliminating the need for manual intervention. The tank fill-point is conveniently located at ground level to improve refilling simplicity and enhance safety, the company added.

Michelin takes on more of the load with new rigid dump truck tyres

Michelin North America has completed the MICHELIN® X®TRA LOAD line-up with the addition of the 21.00R33 tyre dimension for 50 ton (45 t) payload rigid dump trucks.

The new MICHELIN XTRA LOAD GRIP™ and the MICHELIN XTRA LOAD PROTECT™ tyres allow users to increase load capacity by 10%, or accommodate more distance per hour to maximise productivity, the company says, adding that both the GRIP and PROTECT tyres will be offered in A4 and B rubber compounds.

Sarah Robinson, B2B Mining Marketing Manager for Michelin North America, said: “The MICHELIN XTRA LOAD tyre line is complemented by the MICHELIN XTRA DEFEND line for articulated dump trucks. This Michelin offer for transport trucks in quarries and mines provides a modern solution to maximise the amount of material loaded into these trucks while still delivering traction, damage resistance and increased tyre life.”

The new MICHELIN XTRA LOAD tyre is available for two surface rigid dump truck applications.

The MICHELIN XTRA LOAD PROTECT is for hard, sharp, abrasive conditions on flat, dry surfaces, where the priority is protection and damage resistance – conditions often found in quarries and construction sites. This application is for customers who want to carry up to 10% more load or increase the distances they carry up to a maximum speed of 34 km/h, according to the company.

With an 8% longer wear life, the revolutionary tread pattern contains a greater volume of tread rubber and has better load distribution across the contact patch, Michelin says. “The interlocking blocks and improved heat dissipation yield a cooler running tyre that allows increased speeds,” it says. “Corrosion-proof cables within the tyre structure increase aggression resistance.”

The MICHELIN XTRA LOAD GRIP tyre is for soft, loose, muddy ground conditions in mining and quarry operations on slopes and inclines, where the priority is high grip and traction. A reinforced casing gives the tyre a 10% more load capacity per machine – a huge increase in productivity when multiplied by the number of cycles made daily, the company says.

The tread is comprised of 30% more biting lug edges, which improves braking, cornering and acceleration in loose ground conditions. The tyre can also handle speeds up to 34 km/h thanks to cooler internal running temperatures, Michelin says. The tyre also provides 8% longer wear life with more rubber in the contact patch and improved damage resistance with corrosion-proof steel cables, according to the company.

For the XTRA LOAD PROTECT, the tonne miles per hour (TMPH) is increased by at least 9.3% and up to 69% depending on the specific compounding when compared with previous Michelin ranges, the company says. For the new XTRA LOAD GRIP, the TMPH is increased by at least 4% and up to 31% depending on the specific compounding when compared with previous Michelin ranges.

“This extended load and speed capability will allow users to optimise machine cycles and increase productivity,” Michelin says. “Greater volume of tread rubber in contact with the ground contributes to better load distribution, improved wear resistance and increased tyre life.”

The XTRA LOAD series is also available in sizes 18.00R33 and 24.00R35, the company added.

Nitrogen tyres and oxygen generators bring safety and sustainability to mines

David Cheeseman*, Chief Engineer of Oxair Gas Systems, believes the mining industry should take on board the latest on-site gas generation technology to help improve safety and reduce its carbon footprint.

The mining industry is becoming a lot more technology-focused, with advancements in autonomous mining technology and automated surface vehicles, as the industry presses ahead to reduce carbon emissions and boost safety in mining.

The International Council on Mining & Metals’ (ICMM) Innovation for Cleaner, Safer Vehicles (ICSV) initiative – a supply chain collaboration with original equipment manufacturers (OEM) – is to be applauded. However, in the meantime, rugged terrain will still be taking its toll on the tyres of mining vehicles, which are the workhorses of the extraction process.

These trucks operate in harsh environments and extremes of temperatures, which is why nitrogen-filled tyres are ideal, because they remain inflated for longer and are more resistant to hot climates and freezing at high altitudes, making them safer for operators and site staff alike. Unlike compressed air, nitrogen is an inert gas that does not react with other materials, so it is resistant to corrosion and, therefore, provides an extra tier of safety where critical applications are involved.

It is imperative that tyres are fully inflated to reduce the risk of critical air leaks and rapid deflation when the vehicles are under pressure. But being at the mercy of the supply chain for bottled nitrogen, especially in extreme locations where conditions are challenging, is costly. Nitrogen can be difficult to transport, not to mention the additional carbon footprint of delivery vehicles and safety risks for staff manually moving cylinders from one place to another, especially with the new threat of contamination posed by the coronavirus pandemic.

However, companies can avoid the hassle of having to outsource their gas from conventional cylinders by switching to an on-tap supply through a nitrogen generator. A nitrogen generator on site is the ideal alternative choice to manhandling canisters for heavy-duty equipment where precise or constant pressure is vital.

Oxair’s nitrogen generators are efficient and compact, making them an ideal solution for mining sites. They offer a continuous flow of gas extracted from the atmosphere and are an environmentally friendlier method of delivery, as they reduce the carbon footprint associated with having

Oxair’s nitrogen generators are efficient and compact, making them an ideal solution for mining sites, David Cheeseman says

cylinders transported from an off-site facility and then the return journey when they are empty.

Nitrogen generators are cheap to run and, once installed, require minimal maintenance. Nitrogen plants are built to last and are operator friendly, making them crucial where tyres need to perform well in a remote location or challenging environment.

As with all high-quality engineering solutions, nitrogen generators can be tailored exactly to suit an individual mine’s requirements. They can be designed for outdoor or covered facilities and, as well as offering low energy consumption, a supplier should be able to provide on-site training to enable local employees to properly calibrate and easily maintain the system once it is operational, as well as full ongoing maintenance support.

Some of the world’s leading gold mining companies are already seeing the benefits of gas on tap at sites rather than taking deliveries of traditional cylinders. Pressure Swing Adsorption (PSA) oxygen equipment supplied by Oxair is helping AngloGold Ashanti extract more of the precious metal from one of its flagship gold mines, potentially extending the life of the open-pit operation in Tanzania.

Two booster processors for increasing oxygen pressure and two oxygen generator tonnage plants to further improve the efficiency of the leaching process are in operation at AngloGold’s Geita Gold Mine, enhancing gold recoveries and protecting the environment by reducing cyanide consumption.

This equipment is helping to increase production and extend the mine’s lifespan beyond 2025, when it was originally set for closure. The state-of-the-art equipment supplied, which includes upgraded control systems, will double the reliable source of pure oxygen for the future activities planned at Geita. It will mean significant efficiencies in carbon in the leach technology method of gold recovery and should help the mine be both economically and environmentally sound for its extended lifespan.

Using oxygen generators significantly improves the gold dissolution process through adding highly purified oxygen at the slurry stage of leaching. Mined rock is usually ground up and turned into a slurry by adding lime, cyanide, oxygen and water before being fed through a carbon bed to extract the gold. Incorporating highly purified oxygen allows cyanide to work more efficiently and, thus, reduces the quantity of cyanide needed in the process.

A PSA tonnage plant takes oxygen directly from the air using on average of only 3 kW of electricity per 100 cu.ft of oxygen produced and transforms it into highly purified oxygen by removing nitrogen entrainments (which are useless to the leaching process).

Using oxygen generators significantly improves the gold dissolution process through adding highly purified oxygen at the slurry stage of leaching

Oxygen tonnage plants are designed for on-site applications requiring large amounts of oxygen, such as mining, with outdoor or covered standard installations – PSA equipment is bringing numerous advantages to the mining industry, as well as eliminating the need for expensive and unreliable deliveries of liquid or cylinder oxygen.

On-site generators provide mines with a turnkey solution for getting a constant, reliable source of high-quality oxygen and nitrogen where it is needed. It is clear that with responsible mining practices geared up for long-term sustainability, investments in quality equipment will be key to achieving both safety and sustainability goals.

*This piece was written by David Cheeseman, Chief Engineer of Oxair Gas Systems. Oxair is an ISO 9001 certified company focused on the design and manufacture of packaged oxygen PSA Systems, as well as Nitrogen PSA systems up to 1,000 Nm3/h.

Michelin completes 49 in tyre portfolio with XD MINEWORKS

Michelin North America has introduced a new 49 in (1,245 mm) tyre for 100 ton (91 t) mining and quarry dump trucks that, it says, addresses the aggressive everyday needs of operators in North America.

The MICHELIN® XD MINEWORKS 27.00R49 is specifically designed for dependable performance, the company says.

Sarah Robinson, Michelin North America’s B2B Mining Marketing Manager, said: “Michelin has a strong heritage when it comes to supporting mines, quarries and contractors. Developed by a team of global experts, the MICHELIN XD MINEWORKS tyre is built with high-quality innovations that customers know and trust.”

MICHELIN XD MINEWORKS tyres are designed with a new tread pattern and tread depth to deliver even wear on hard soil and a worry-free product experience, according to Michelin. They use the latest mining tyre design principles, which means the incorporation of advanced casing and high-wear resistance compound technologies for surface mining tyres to handle heavy loads at lower pressure. They are designed as a good balance between tonne-kilometres/h and wear resistance, Michelin says.

Thanks to tough cables and innovative architecture, the MICHELIN XD MINEWORKS tyre allows operators to run with less pressure than competitor tyres for the same load. This feature, in particular, can deliver big benefits for the operator and the equipment, Michelin says.

The non-directional, 66 mm tread (designed for minimal rotation) minimises stone retention, while the tyre has the same Michelin manufacturing warranty as all of its mining tyres.

With the introduction of the 2-star MICHELIN XD MINEWORKS, Michelin offers a complete 49 in tyre portfolio. This also includes the 3-star MICHELIN XDR® 3 tyre that maximises productivity and tyre life and the 3-star MICHELIN XDGRIP tyre that is for the most challenging loose surface conditions.

MAXAM Mining Group releases new MS412 27.00R49 tyre

MAXAM Mining Group says it continues to innovate, adding the all-new MS412 27.00R49 tyre to its open-pit mining, quarry and OTR program.

Designed to meet the demanding conditions at mine sites globally, the MS412 is the result of cutting-edge engineering and groundbreaking compounding technology, the company claims.

The tyre features a high net-to-gross tread pattern for low wear rates that increase tyre life, while MAXAM’s engineers have strategically placed stone ejectors on the tyres to provide maximum protection from drilling – which can lead to the cause of premature tyre removal and out of service conditions.

Engineered with tread grooves that allow for “exceptional traction and heat dissipation”, the MS412 delivers excellent traction in a variety of haul road conditions, MAXAM says.

To enable high speed operation with minimum heat build-up, MAXAM says it has optimised the MS412’s base compound, thereby maximising productivity for mining operations across the globe.

“Featuring a strong all-steel casing to reduce cuts and punctures, the all-new MS412 is engineered with increased casing durability to dominate severe hauling conditions,” it said.

“As an innovative group, with years of expertise in the mining industry, MAXAM’s engineering team has designed the MS412 with a high lug-to-void ratio for improved wear and impact protection, providing mine sites increased protection and wear on haulage tyres. Similar to all large mining haulage tyres in MAXAM’s program, the MS412 has deep tread grooves to provide cooler running tread and longer tyre life.”

Delivering a premium E4 haulage tyre to the industry, the MAXAM MS412 provides exceptional performance, minimum cost-per-hour and a high net-to-gross pattern for maximum tread wear, the company says.

The MS412 is available in one size, but multiple tread compounds, including the ultra-cut resistant compound that was recently released by MAXAM.

MAXAM Tire launches new group focused on open-pit mining

MAXAM Tire says it has created a dedicated global team focused on the open-pit mining market called MAXAM MINING GROUP (MMG).

The MMG team is made up of multiple members across continents responsible for serving regional market demands. Each member of the team is an industry leading expert dedicated to providing the best customer experience along with superior business solutions, the company said.

“As mining applications and machinery continue to evolve, our R&D group focuses on the utilisation of leading technology to improve safety, product performance and repeatable quality,” MAXAM Tire said. “By leveraging extensive research and testing in multiple mine locations around the world, our engineering team develops site-specific tyre compounding along with the next generation casing designs to exceed site requirements for overall performance improvement.”

To meet MAXAM’s engineering team’s advanced innovations, MAXAM has invested heavily in a state-of-the-art manufacturing and quality process, with all mining products produced with multi-staged, custom designed building equipment, it said. “This new technology allows for consistent construction and minimal disruption of the casing during the curing process,” MAXAM Tire said.

“Utilising advanced shearography technology, all MAXAM mining products are screened for internal defects as part of the standard inspection. In addition, extensive ultrasonic gauge testing is completed before product is approved for distribution. “

Matt Johnson has been appointed as Vice President of the MMG. He said: “We pride ourselves in delivering solutions with the lowest cost per hour/tonne, and provide long-term, mutually beneficial business relationships with our customers and our partnerships that only begins at the placement of MAXAM products.”

Michelin goes up a size with XDR 3 surface mine haul truck tyre

After six years of development and testing, Michelin North America, has introduced the MICHELIN® XDR® 3 surface mine haul tyre in size 27.00R49.

Addressing the productivity and endurance issues found in today’s surface mines, the XDR3 – developed for a range of rigid dump trucks with payload capacity up to 400 tons (363 t) – is designed with new compounds and a revolutionary new tread pattern that helps provide exceptional tyre life, the company said.

“The use of corrosion-isolating cables in the tyre architecture is a significant upgrade in situations where this equipment is always moving as it is operated for up to 23 h/d in extreme terrain,” the company added.

These innovations allow customers to select the benefit that best fits their needs, according to the company. Customers can choose not to increase speed or load and expect a 10% increase in tyre life. Or, customers could choose either to increase speed by 10% or increase load by 10% and achieve the same tyre life as the previous generation. “This flexibility allows Michelin to better support customer needs and goals,” the company said.

Jake Thompson, Michelin North America’s B2B Mining Marketing Manager, said: “Michelin’s most popular tyre has been tested on multiple truck brands and is designed for punishing environments where the goal is safety and performance.

“Michelin responds to customer needs by providing long-lasting, innovative products that solve their most demanding business challenges in the specific environments where they operate.”

The MICHELIN XDR3 is designed for operator safety: the tread pattern provides excellent load distribution across the contact patch, lowers contact pressure and reduces wear rate, according to the company. In addition, the tread pattern is designed for better endurance, thanks to “revolutionary heat dissipation”. This helps prevent tyre overheating, which can result in failure and, in turn, jeopardize operator safety.

“The XDR3 is MEMS-ready and helps reduce rim slip through a new flat-bead wire, which is designed to strengthen the clamping force on the wheel and increase its contact surface with the rim,” the company said.

Solidium invests in Nokian Tyres as production growth starts to kick in

Finland-based Solidium Oy has confirmed the acquisition of 5.1% of Nokian Tyres for approximately €205 million ($233 million).

The shares have been acquired from the market over the last few months, the company said. Following the share purchases, Nokian Tyres represents around 3% of Solidium’s equity investments, totalling some €8.1 billion. Solidium is a holding company wholly owned by the State of Finland and a minority owner in “nationally important” listed companies.

Solidium’s CEO, Antti Mäkinen, said Nokian Tyres had successfully executed its niche strategy in the global tyre market over a long period.

“The company has promising growth opportunities at its hand owing to the greenfield investment in its third production factory, which is being built in Dayton, USA, and the investment to increase production capacity in its factory in Nokia, Finland.

“Due to these reasons, we believe Nokian Tyres has excellent foundation to create value for its shareholders. In addition, the investment done by Solidium strengthens and stabilises Finnish ownership in the company.”

In addition to providing tyres for commercial vehicles, Nokian’s Heavy Tyres division provides specialist tyres that minimise unscheduled maintenance breaks and maximise productivity in mining and tunnelling operations.