Tag Archives: Wear parts

Weir releases new gate valve as it advances Terraflowing, ToolTek solutions

Comminution of minerals, Mineral processing, Mining equipment, Mining maintenance, Mining services, Water management, , , , , , , , , , , ,

Weir Minerals has released a new Isogate® WR knife gate valve to reduce cycling discharge while improving wear life.

The lightweight, long-lasting Isogate WR knife gate valve offers miners and aggregates operators alike a step change in valve performance, according to Weir Minerals.

The release came on the same week Weir Group announced its 2020 financial results, which saw the company report revenue and adjusted operating profit of £1.97 billion ($2.73 billion) and £305 million from continuing operations, respectively. These figures were down 4% and 3%, respectively, from 2019 totals.

On the new valve, Weir said: “Incorporating the latest advances in design and materials technology from Weir Minerals’ expert engineers, the range of Isogate WR knife gate valves are more reliable, while producing minimal fluid discharge and weighing considerably less than equivalent mining valves.”

John Abbott, Global Product Manager – Valves & Tailings, said: “Drawing on decades of wear analysis, we’ve optimised the Isogate WR knife gate valve’s body design, by reinforcing the areas subjected to the harshest wear and pressure. At the same time, we have reduced the weight elsewhere to produce a robust, long-lasting mining valve that’s significantly lighter than comparable products.

“The weight reduction can be especially significant in situations where a number of valves are used on a specific installation, such as in a hydrocyclone cluster, or where lightweight piping systems are used.”

The gate has also been redesigned, with stronger materials resulting in a thinner gate that can still withstand the pressure of mining slurries. This combines with the valve’s unique gate guide that, Weir says, reduces deflection by ensuring smooth gate movement and less strain on the sleeve elastomer during blade transition.

The Isogate WR knife gate valve uses Weir Minerals’ new Isogate WSL sleeve, which comes with proprietary Linard® HD 60 silica-reinforced natural rubber to solve the three most common problems with sleeved knife gate valves: leakage during cycling, tearing and load distribution ring (LDR) failure due to corrosion and erosion, the company explained.

Leveraging the Linard HD 60 rubber’s high resilience against cut, tear and abrasive wear to improve wear life, the new Isogate WSL sleeve fully encloses the LDR to prevent corrosion. By allowing the rubber to move with the blade cycles, the design reduces the chance of tearing while reducing slurry discharge by up to 75%, according to Weir.

The Isogate WSL sleeve can also be used in existing Isogate WS knife gate valves, improving wear life and decreasing discharge on cycling.

Abbott added: “When designing the Isogate WR knife gate valve, we focused on features that improve the everyday experience of working with our valves. This includes important things like improved grease distribution and improved body flushing when used on high solids concentration applications.

“In-depth finite element analysis enables us to ensure the product’s integrity, while making it lightweight. There are also a lot of smaller features to make life easier, such as a larger grease reservoir, ISO mount standardisation and an external visual indicator for the valve’s status.”

Other notable developments from Weir Group’s 2020 financial results included the first order for ESCO’s ToolTek™ system.

This collaborative effort with key mining customers provides enhanced safety for maintenance personnel during the replacement of worn Nemisys® points and adapters, according to ESCO. It features a hydraulic crane mounted tool that is remotely operated, well out of harm’s way during the replacement of worn components. New parts are pre-staged on racks  positioned on the flatbed truck outfitted with the hydraulic crane. The truck also features a recycle bin for safer disposal of worn parts.

Alongside this, Weir said in 2020 it installed the first pilot Terraflowing® plant at a customer’s mine site designed to cost-effectively reduce water in tailings, enabling this waste product to be safely stored or repurposed.

Terraflowing incorporates a two-stage cyclone dewatering process followed by centrifugation of the final stage of cycloning overflow. In the process, three dewatered tailings streams are produced: a primary cyclone underflow, a secondary cyclone underflow and a centrifuge pulp. These three streams can be combined or used in different configurations depending on the end use of the tailings stream, according to Weir Minerals.

This three-stage system offers the flexibility to make provision for variations in mineralogy and particle size distribution as well as the opportunity to recover ‘tailings as a resource’, it added.

Kwatani breathes new life into scalping screens with rubber, polyurethane wear panels

Comminution of minerals, Equipment maintenance, Mineral processing, Mining equipment, Mining services, , , , ,

As mines move towards using one large scalping screen between primary and secondary crushers – rather than a modular approach using multiple smaller screens – Kwatani says it has found ways to triple the panel life in these single mission-critical units.

According to Kenny Mayhew-Ridgers, Chief Operating Officer of Kwatani, any downtime in this single-line stream would require the mine to store several hours of production. While some mines schedule regular weekly production halts during which an exciter or worn screen panels can be replaced, many operations are not so lenient, he said.

“The message from these mines is clear: the longer the scalper can run between maintenance interventions, the better,” Mayhew-Ridgers said. “Our research and development efforts, together with extensive testing in the field, have allowed us to extend the life of screen panels from eight weeks to over six months.”

While smaller screens use wire mesh screening media, Kwatani has evolved larger screens that use rubber or polyurethane screen panels. Although these panels present less open area, they deliver important advantages.

“Key to the success of our design is our integrated approach – which matches the panel design with that of the scalping screen itself,” Mayhew-Ridgers said. “This allows us to achieve a balance between screening area, aperture layout and screen panel life – a result based on a sound understanding of screen dynamics.”

Whereas wire mesh undergoes rapid wear from abrasive materials, the rubber or polyurethane panels are more wear resistant and deliver longer life, according to the company. The latter require gentler declines for effective stratification, but a key factor is the stiffness of the screen bed.

“The stiffness of the supporting structure must go hand-in-hand with the screen panel design to achieve our required results,” Mayhew-Ridgers said.

Polyurethane panels, while strong and lightweight, have screening apertures that tend to be too stiff for heavy-duty scalping applications. This leads to blinding. Rubber overcomes this problem, however, and also delivers improved wear life.

Kwatani has also developed a panel replacement system – with a fastening mechanism on the underframe – that improves safety and saves time, it says.

ME Elecmetal looks for sales, service boost with Road Machinery & Supplies Co partnership

Comminution of minerals, Equipment maintenance, Mineral processing, Mining consumables, Mining equipment, Mining services, , , , , , , ,

ME Elecmetal has selected Road Machinery & Supplies Co (RMS) as a manufacturers’ representative for its line of crusher wear product solutions.

RMS is a distributor of construction and mining equipment with sales and support operations throughout the Upper Midwest of USA. It represents the best brands in the industry and backs them up with responsive, knowledgeable product support and technology solutions, enabling customers to complete their jobs safely and on time, according to ME Elecmetal.

As a distributor for ME Elecmetal, RMS will provide sales, parts, service, and other support capabilities to customers in Iowa, Minnesota, Nebraska and Michigan’s Upper Peninsula.

“As part of our effort to increase our market presence in this important region of the United States, we are pleased to begin our relationship with Road Machinery & Supplies,” George Schlemmer, Director of Crusher Products and Solutions for ME Elecmetal, said. “The years of experience in the states they will represent, as well as their highly skilled and knowledgeable sales and service teams, will be a great asset in providing our end customers with premium quality crushing and aggregate solutions.”

RMS Aggregate Division Manager, Ben Schmidtlein, said: “We feel our new partnership with ME Elecmetal will have a direct impact to our customers’ bottom lines. We are excited to combine top-quality wear materials to our great products and services.”

Metso Outotec to discontinue North Bay operations as part of consumable wear parts restructuring

Comminution of minerals, Equipment maintenance, Mining consumables, Mining services, , , , ,

Metso Outotec is developing its global rubber and poly-met supply chain by restructuring its consumables wear parts manufacturing operations in North America, leading to the closure of its factory operations in North Bay, Canada.

Production will be ramped down by the end of the first half of 2021, with the closure affecting a total of around 65 employees.

Metso Outotec says it will use the existing North and Central American manufacturing footprint in order to serve customers.

Sami Takaluoma, President, Consumables business area at Metso Outotec, said: “We are continuously developing our global supply footprint to ensure sustainable and profitable growth. To close a factory is a hard but necessary decision, and we realise that it will have implications on our employees. We will work to support them through the transition.”

The North Bay unit produces rubber and poly-met wear parts used in the mining industry.

Metso Outotec is a leading provider of rubber and poly-met mill lining with an extensive service network in all main mining markets. The company currently operates 11 factories manufacturing synthetic solutions globally.

Metso Outotec starts up mining wear parts facility in Lithuania

Comminution of minerals, Equipment maintenance, Mining consumables, Mining equipment, Mining maintenance, Mining services, , , , ,

Metso Outotec’s new manufacturing site in the region of Šiauliai (Šiauliai län), northern Lithuania, has started its operations.

The new plant further strengthens the company’s capability to produce high-quality rubber and poly-met wear parts for its mining customers, the company said. The investment was announced back in March 2020.

“Our target is to continuously develop our global operations to ensure a competitive footprint and reliable deliveries for our customers globally,” Sami Takaluoma, President, Consumables business at Metso Outotec, said. “I am very pleased that the ramp-up of the new factory in Lithuania has been now completed by a very competent team. First products have been successfully sent to our customers.”

The factory uses fossil-free and renewable electricity in its production, and processes have been optimised for each customer segment. The location of the factory in Lithuania was decided based on a careful analysis of the current customer closeness in Europe and Russia, and with good logistical connections to the Middle East and Africa regions, Metso Outotec said. With access to many logistics options, customers will also benefit from the improved delivery and warehousing capabilities.

Metso Outotec, which operates currently 11 factories manufacturing synthetic solutions globally, said the factory will employ 80 people by the end of 2020.

In October 2019, the company opened a new Business Services centre in Vilnius, the capital of Lithuania. Currently the centre employs about 100 experts and offers services related to finance operations and customer logistics. The scope of the centre is growing and will cover new areas in the future, the company explained.

Sandvik cone crushers go circular with recycled wear parts

Comminution of minerals, Environmental, Equipment maintenance, Mining equipment, Sustainable mining, , , , , , , ,

Sandvik Group is encouraging circularity in the mining industry through the recycling of steel from used cone crusher parts to make new crushing equipment.

While extractive industries such as mining are responsible for 50% of global carbon dioxide (CO2) emissions, recycling steel from mining equipment could make all the difference, according to Anders Åkesson, QM EHS Manager, Crushing & Screening at Sandvik Mining & Rock Technology (SMRT).

Circularity is becoming vital in the reduction of CO2 emissions, and can help improve the environmental position of many industries. With the mining industry contributing a large percentage of global CO2 emissions, implementing circularity could help it make vital reductions, Åkesson says.

To produce equipment, the mining industry predominantly uses manganese steel, which is renowned for its work-hardening properties and resistance to abrasion. This means the material becomes harder with the more impact it receives, creating a low friction surface suited to crushing. For this reason, manganese steel has been used in high impact applications for over 100 years, making it an ideal material for cone crushers.

Cone crushers are used to grind down rocks, which are fed into the top of the crusher and pressed between the mantle and the cone. This breaks the rock down into smaller fragments, which are then passed through lower levels of the crusher where they are broken down further.

“It’s vital that cone crushers are made from a material that provides the necessary force to grind the rocks, while withstanding the abrasive nature of the process,” Åkesson said.

Using recycled steel from used cone crusher parts to make new cone crushers, Sandvik SMRT has demonstrated and improved circularity of steel production for mining equipment, he explained. The division was nominated for Sandvik’s first sustainability award in April 2020, which recognises sustainable innovations from its employees.

Sourcing manganese steel from one of the world’s most sustainable manganese foundries, based in Sweden, was the first step SMRT took towards its sustainable innovation. A total of 91% circular steel was used to manufacture wear parts, such as the cone and mantle of a cone crusher. These wear parts are reused to produce new wear parts for the cone crushers – creating a continuous cycle, Åkesson said.

Moving away from a linear model, Sandvik increased the circularity and sustainability of its products and eliminated 79% of production emissions, according to Åkesson. “In addition, Sandvik cone crushers help SMRT’s customers to lower their environmental impact as they are buying from the circular economy – contributing to their own sustainability goals,” he said.

Åkesson concluded: “With mining contributing towards CO2 emissions in more ways than one, it’s essential that the industry uses methods that reduce emissions. Reusing and recycling steel to manufacture mining equipment has demonstrated an opportunity that helps meet the sustainability goals of both equipment suppliers and their customers. If the industry wants to become circular, taking a look at equipment a good place to start.”

CR beefs up Pilbara service offering with ‘Boots on the Ground’

Communications in mining, Equipment maintenance, IoT, Mining consumables, Mining equipment, Mining maintenance, Mining services, Steel and iron ore, , , , , ,

As part of CR’s strategy to further increase its on-site service model and ensure it maintains a high level of service through these times of regional and border restrictions, it has announced its local Pilbara ‘Boots on the Ground’ initiative.

“Equipped with the latest in vehicle safety, communication, navigation and journey management systems, we welcome Troy Honey back to the CR Australasia Team,” the company said. “Troy is residential to Karratha, has been a North West local for four years and, combined with over 20 years of experience servicing the Pilbara resources sector, he will be an asset to ensuring our customers productivity assets are maintained to the highest level possible.”

CR added: “Whether it is during restrictions or any time requiring service, CR’s ‘Boots on the Ground’ will provide the rapid response required by the Pilbara’s world leading mining industry, all the while supporting the local communities of the Pilbara in Western Australia.”

Caterpillar addresses hydraulic shovel basket wear with new two-piece bucket

Mining consumables, Mining equipment, Mining maintenance, Mining safety, Mining services, , ,

Caterpillar has introduced a new two-piece bucket for hydraulic mining shovels that, it says, reduces downtime, optimises bucket capacity and increases rebuild safety.

The design reduces downtime by limiting refurbishment to the area of the bucket subjected to most of the wear – the basket.

“The replaceable basket enables faster, easier and safer rebuilds compared to traditional buckets,” the company said. “In addition, the basket design can evolve with mine site conditions to further reduce downtime and optimise capacity over the life of the bucket.”

The durable upper structure of a bucket will host several baskets during its long service life, thus the need for optimising basket replacement, Cat said. Also, the two-piece bucket is lighter than conventional buckets, yet features high wear resistance, according to the company.

“The basket is a single piece of structural steel with no liner or wear plates, and the floor and sideplate thickness are optimised for bucket size and anticipated wear rate,” Cat said. “The basket is retrofittable onto legacy buckets used in compatible digging conditions.”

The two-piece bucket enhances both safety and serviceability, according to the company.

Replacing just the basket requires less gouging, welding, and grinding than buckets protected with wear plates, while the single-piece basket design reduces potential hazards caused by stored energy.

“After the initial design is completed for the application, replaceable baskets can be ordered in advance and stocked on site,” Cat said.

Weir ESCO expands Nemisys tooth system offering for hydraulic excavators

Equipment maintenance, Mining consumables, Mining safety, Mining services, , , , ,

Weir’s ESCO division says it has extended its Nemisys mining tooth system to a new range of excavators.

The expanded Nemisys offering serves as a direct upgrade and replacement for the SV2® system and competitor weld-on systems for plate lip hydraulic excavators, it said.

Earlier this year, the company introduced the Nemisys N70 Lip System for hydraulic excavators as it looks to expand the tooth system’s reach beyond the large mining shovels, large excavators and wheel loaders it was initially developed for.

This latest addition will see the mining tooth system support 160 ton (145 t), 200 ton (181 t) and 250 ton (227 t) excavators.

“Operating on over 700 machines worldwide, the Nemisys system has demonstrated market leadership in reliability, site safety and enhancing machine performance,” the company said.

ESCO says the Nemisys system features hammerless locking mechanisms for greater safety and easy replacement, while the slim contoured profile improves bucket loading and reduces fill energy.

“The system is also known for reducing or eliminating unplanned downtime, providing major improvement in cost reduction and balancing machine maintenance cycles,” it said.

CR readying new cast lip system for large wheel loader buckets

Equipment maintenance, Mining consumables, Mining equipment, Mining maintenance, Mining services, , , , , , , ,

CR is preparing a new addition to its DecaEdge™ range of cast lip systems for large wheel loader buckets, with the new product due for public release by the end of the year.

The new DecaEdge DE2553 cast lip will complement the existing range and suit large mining wheel loader buckets with capacities between 14 cu.m and 20 cu.m, according to the company.

DecaEdge leverages the experience of CR’s RazerEdge™ cast lip range which revolutionised the market for 100 t to 400 t excavator lip and ground engaging tool (GET) systems, the company said. CR already has two lips in the market for the Komatsu L1850 and L2350, WA1200 and Cat 994 wheel loaders.

With over 160,000 combined operating hours and counting, a DecaEdge lip can last for up to 25,000 operating hours with no major rebuilds, according to the company. The system removes outdated plate lip features by employing integral cast noses and better material placement to achieve plane alignment and spade angle optimisation, delivering an over 33% reduction in total cost of ownership of the lip and GET system, according to CR’s General Manager of Product Management, Quintin Nienaber.

“It also eliminates the need for wear blocks and wear packages,” Nienaber says. “The specially designed teeth and shrouds are designed to also protect the lip, which means that every time a ground engaging tool is replaced, the underside wear package is refreshed, simplifying the maintenance process and reducing the demand on maintenance teams,” Nienaber says.

CR said the DecaEdge DE2553 is anticipated to uphold the durability and maintenance savings benefits experienced with the current DecaEdge range.

“CR is excited to broaden the range of this revolutionary technology,” it added.