Orica’s corporate vision of “mobilising Earth’s resources in a sustainable way” is being further realised through a host of developments from its Digital Solutions and Blasting Technologies divisions, IM reports.

Those involved in charging operations could soon benefit from the launch of Orica and Epiroc’s Avatel™ solution, which, in combination with the WebGen™ wireless initiation platform, offers the ability to remotely blast a development face.

At the same time, the company is busy with the sustainable production of emulsion, the integration of geological orebody information to optimise energy use for blasting, and the expansion of downstream mineral processing tools.

Avatel is a combination of state-of-the-art hardware and software solutions designed to mechanise the blasting process.

It includes Orica’s HandiLoader™ emulsion process body, Epiroc’s M2C carrier integrating an RCS 5 control system with Orica’s LOADPlus™ control system, a WebGen 200 wireless initiation system and an automated WebGen magazine. Epiroc has also incorporated onboard dewatering and lifter debris clearing capability, while Orica’s SHOTPlus™ intelligent blast design software is leveraged to deliver superior blasting outcomes, Orica says.

These components help eliminate the need for personnel exposure at the development face throughout the charging stage of the mining cycle, keeping personnel out of the line of fire, by substituting inherently high hazard manual tasks with a mechanised development charging solution.

A prototype Avatel unit is set to commence operations at Agnico Eagle Mining’s Kittilä gold mine in Finland in the next few months. This follows “alpha trialling” of the complete prototype unit at Epiroc’s Nacka test mine in Stockholm, Sweden.

Adam Mooney, Vice President of Blasting Technology for Orica, said: “Our goal for Kittilä is to expose Avatel to a real mining environment, putting the unit through its paces in an active mine where safety, productivity and reliability are core requirements for success.

“We will gain a practical understanding of how Avatel will fit in with and benefit the entire mining cycle, while also taking the opportunity to measure the blasting improvements possible through the combined use of electronic initiation timing and the precise blast energy control available with Avatel.”

A separate unit, meanwhile, will head to Newcrest Mining’s Cadia copper-gold mine in New South Wales, Australia, later this year, for the first commercial deployment. This is currently undergoing pre-delivery commissioning at Epiroc’s customer centre in Burnie, Tasmania.

Not too far away in Papua New Guinea, Orica has successfully commissioned a Cyclo™ emulsion technology unit, which has been running at a customer site for around two months, according to Mooney. The unit in question has treated in excess of 100,000 litres of used oil, he said.

Cyclo combines the company’s emulsion technology with used oil processing technology to transform mine-site used oil for application in explosives. To provide the tight quality control and regular testing required to manufacture emulsions with such inputs, Orica has partnered with CreatEnergy to develop a standalone, on-site solution to treat used oil.

Orica initially scheduled Cyclo for market introduction in late 2022, but it scaled and sped up development and production plans to support customers’ operations and curtail material disruptions brought about by COVID-19.

The first automated containerised used oil recycling system was commissioned in Ghana late in 2021, with the Papua New Guinea unit being the latest deployment.

A Senegal Cyclo debut is on track for July given the unit is already in country and connected into the emulsion plant on site, Mooney explained.

The company also plans to bring to market a Cyclo unit suitable for Arctic conditions by the end of this year, with the solution already under construction.

Data to insights to intelligence

Aside from hardware and sustainable emulsion solutions, Orica has recently signed an agreement with Microsoft Azure predicated on creating data-rich and artificial intelligence-infused tools that enable productivity, safety and sustainability benefits on site, with Raj Mathiravedu, Vice President of Digital Solutions, saying such a tie-up enables the company to think of the blasting value chain in a much more holistic manner.

“Orica Digital Solutions’ purpose is to develop and deliver a suite of integrated workflow tools to enable the corporate vision of mobilising Earth’s resources in a sustainable way,” he said. “A key attribute to delivering this workflow is the journey that we need to incorporate from data to insights to intelligence.”

Mathiravedu says the company is looking to go beyond the traditional solutions pairing software and IoT devices for a discrete product to – with the help of Microsoft Azure capabilities – building “answer products” focused on improving workflows.

“These workflows can benefit from understanding how geology within the orebody intelligence space can help us determine the optimised energy required for blasting in a real-time production workflow,” he said. “We have started this journey and are already delivering value to our customers by integrating workflows from orebody to processing.”

One example of this is the company’s FRAGTrack™ suite of solutions, devised to provide blast fragmentation data with auto-analysis capability.

Delivered as part of the company’s BlastIQ Digital Optimisation Platform, FRAGTrack is able to capture real-time fragmentation measurement data for optimising drill and blast operations, improving downstream productivity and tracking of operational performance.

Originally developed for measurements on both face shovels and conveyors, the solution was expanded earlier this year with the launch of FRAGTrack Crusher for automated pre-crusher fragmentation measurements.

There are several vendors offering fragmentation measurement tools throughout the industry, but Mathiravedu says Orica’s solution can carry out such analysis consistently and accurately – day or night – in extremely dusty and dynamic environments like mining.

“The FRAGTrack image processing technology can handle extremely dusty and lighting-affected conditions beyond any solutions in the industry,” Mathiravedu said. “It is also able to learn and adapt to specific operational environments like the dumping habits of different truck operators using artificial intelligence technology. Together with the integration with fleet management systems, it can provide a fully autonomous and integrated measurement solution.”

On conveyors, the FRAGTrack solution can reliably measure fines with increased accuracy compared with conventional systems that leverage curve-fit algorithms, according to Mathiravedu, with the advanced image and 3D processing techniques providing the ability to measure fragments down to 5 mm in size.

The combination of FRAGTrack Conveyor and Orica’s ORETrack™ solution can provide not only particle size distribution information, but also critical information on ore grade and hardness for the milling operations in real time.

“The FRAGTrack platform architecture has been designed to be scalable to incorporate different sensor inputs along with its high-performance GPU compute capabilities,” Mathiravedu said, explaining that there could be further analysis solutions down the line.

China’s Wuxi Boton has announced the world’s first carbon neutral conveyor belts for delivery to BHP’s Spence copper mine in Chile in August as part of an exclusive pilot project between the two companies.

The two companies jointly developed this pilot project, under which the conveyor belts were verified by SGS, a leading testing, inspection and certification company, as meeting the requirements of PAS 2060:2014 (specification for the demonstration of carbon neutrality).

SGS awarded the world’s first certificate of “Achievement of Carbon Neutrality for Steel Cord Rubber Conveyor Belt” to a batch of belts produced by Boton for BHP. The conveyor belts will be shipped to BHP’s Spence copper mine, where they will be used in the production and transportation of Spence mining products to customers around the world, including China.

The scope of the pilot project was for Wuxi Boton, as the incumbent contractor for BHP’s operations at both Minerals Australia and Minerals America, to select the conveyor belts to be ordered by BHP and identify how to offset the estimated greenhouse gas (GHG) emissions associated with the production of those conveyor belts using high-quality carbon offsets prior to delivery.

BHP’s Group Procurement Officer, James Agar, said: “Wuxi Boton have been a reliable partner to BHP for over eight years, supplying high-quality conveyor belts to our assets in Australia and Chile. Both companies are committed to mitigating climate change in accordance with their respective climate targets and goals. This shared vision of a better world led Wuxi Boton, in December 2021, to extend the offer of an exclusive pilot to deliver a carbon neutral conveyor belt to BHP.

“The partnership with Wuxi Boton has been invaluable in helping BHP verify the feasibility of using high-quality carbon offsets to GHG emissions in our supply chain (Scope 3) and grow the potential demand for supplying ‘traced’, ‘low carbon’, or ‘carbon neutral’ products amongst our suppliers.”

Wuxi Boton’s Chairman, Zhifang Bao, said: “It is difficult for any enterprise to achieve low-carbon transformation on its own. Only by building a global platform, co-operating with the whole industry chain, and jointly exploring low-carbon technologies and road maps can we reach the other shore.

“Therefore, joint innovation is an inevitable choice. Instead of passively accepting, it is better to take the initiative to lead, which is a very important choice faced by enterprises all over the world. We are pleased to see that the partnership between BHP and Boton has expanded from a single business level to a strategic synergy level. In the journey of global energy transition, leading companies, including Boton and BHP, are jointly working towards building a more sustainable future.”

When a coal mine in South Africa’s Mpumalanga province needed to replace its high maintenance conventional transfer chutes, it looked to Weba Chute Systems for the best custom-engineered design, the manufacturer says.

Weba Chute Systems is currently busy with designs that will pave the way for the retrofitting of over a dozen chutes at the mine. Eight of the units are silo discharge chutes, transferring coal from the operation’s run-of-mine feed to its coal processing plant. Another four chutes are to be replaced in the plant itself, while there is another chute located between two related feed conveyors.

“The main objective of the new bespoke chutes is to ensure stable supply to the plant, and from there to the nearby power station,” Dewald Tintinger, Weba Chute Systems’ Technical Manager and Designer, says. “The existing equipment is demanding too much maintenance, leading to unacceptable levels of downtime.”

The key to improved uptime and extended chute lifespan is the company’s flow control principles in its designs. The chutes in the plant, for example, must deal with oversize material of between 150 mm and 500 mm in size.

“Handling these large particles, chutes are exposed to high levels of impact and wear,” Tintinger says.“With the controlled flow philosophy of our Weba ‘cascade’ chute system, we control both the velocity and the impact.”

Commenting on other aspects of the custom designs, Tintinger says the transfer points will include features such as dead-boxes to create a lining from the mined material itself. This reduces the wear on the chute’s metal surfaces, extending the maintenance intervals and delivering more uptime. He highlights that the processing plant feeds the power station directly through two overland conveyors.

“This is a highly efficient model for delivering coal, but it demands that all elements of the materials handling system are working together,” he says. “Any disruption of coal flow caused by a transfer chute can cause costly delays, and render coal delivery unreliable.”

He notes that the mine has had good experience from the many other Weba chutes already installed at this operation, and is now standardising on this internationally accepted transfer point design for better results.

Designs and engineering are conducted in-house by Weba Chute Systems’ experienced team, using the latest software and finite element analysis tools for testing.

The design work is expected to be completed around the middle of 2022. Thereafter the mine will be in a position to contract the fabrication and installation work.

Martin Engineering, a leader in bulk material handling technologies and training,  has announced the availability of two rugged secondary conveyor belt cleaners , both engineered for fast and easy maintenance.

The innovative design of the DT2 S and DT2H reversible cleaners   from Martin Engineering reduces system down time and labour for clean up or service , while helping to prolong the service life of other conveyor components, the company says.

The models feature  a unique split-track blade cartridge that slides in and out on a stainless steel mandrel , meaning the cleaners can be serviced or replaced without stoppin g the belt when on-site safety approvals are in place, Martin Engineering claims .

Dave Mueller, Conveyor Products Manager for Martin Engineering , says:  “Even when the cleaner is encrusted with material,  one half of the split frame can be removed so the cartridge can be changed in just five minutes .  This allows users to have a spare cartridge on hand and quickly change it out when the blades need replacement. Then they can take the used cartridge back to the shop, clean it up and change the blades so it’s ready for the next service. ”

These secondary cleaners serve a wide variety of applications, including mining .  Both products significantly reduce material carryback , and arr  engineered to accommodate reversing conveyors to avoid damage to the belt or splicing, the company says . With steel blades and tungsten carbide tips set into a flexible base , the DT2 cleaners offer simple , effective solutions that can solve a number of carryback -related problems.

Martin DT2H Reversing Cleaner XHD

Designed for particularly demanding conditions, the DT2H Reversing Cleaner XHD is suited for heavy material loads on belts ranging from 400 to 2,400 mm wide that  operate at speeds up to 6 .1 m/s. 

The company explains: “ Carryback accumulations along the return run of the conveyor can occur when the cleaning systems on a conveyor fail to remove most of the material that adheres to the belt after unloading its cargo . Increased build up results in unnecessary labour costs for clean up, and can lead to premature failure of conveyor components if left unchecked.”

Mueller said: “ Carryback can have an extremely sticky texture and abrasive nature , which can muck up conveyor components and contribute to premature failure.  One key to the success of these cleaners is the blade’s negative rake angle ( less than 90 degrees ) . W ith a negative angle, you get a ‘scraping’ action that mitigates potential belt damage , while delivering outstanding cleaning performance.”

Martin DT2S Reversing Cleaner

Like its larger counterpart, the Martin DT2S reversing cleaner can be installed on belts ranging from 400 to 4,800 mm  wide . But, unlike the DT2H, the DT2S is designed for a lower maximum belt speed of  4 . 6 m/s on belts with vulcanised splices. Mu e ller pointed out that this is primarily due to the difference in application s: “ T he DT2S has a slim frame that allows it to fit in spaces as narrow as 7 in (178 mm). As a result, the DT2S can be attached to belts that may be too small for primary cleaners.”

Both of the DT2 cleaners can be used in medium- to heavy-duty environments, provid ing a lasting solution to a diverse array of complex problems that are caused by carryback and  minimising   fugitive material, the company says.

An example of the cleaners’ performance can be found at the Pueblo Viejo Dominicana Corporation (PVDC) mine in the province of Sanchez Ramirez, about 89 km northwest of the city of Santo Domingo in the Dominican Republic.  O perators at the operation, majority owned by Barrick, were experiencing excessive carryback and dust on its conveyor system ,  result ing in expensive equipment failures, unscheduled downtime and increased maintenance. Production is 365 d/y, but, between April and October, moisture can cause cohesion in fine clay particles, causing the cargo to become sticky. The substance had the consistency of thick toothpaste, which was also able to adhere small chunks of aggregate to the belt, causing destructive carryback that damaged pulleys and headers.

In just two weeks, Martin Engineering technicians replaced the existing belt scrapers at 16 locations with Martin QC1 Cleaner XHD primary cleaners fitted with low-adhesion urethane blades specifically designed for tacky material loads , along with DT2H secondary cleaners. The secondary cleaner blades can endure hot summer temperatures, high moisture content and constant production schedules, according to the company.

Following the upgrades , o perations are now cleaner, safer and more productive , giving executives and stakeholders more confiden ce in the sustained operation of the mine, which is projected to be profitable for the next 25 years or more .  

BEUMER Group says it has completed the acquisition of the FAM Group of Magdeburg, Germany, in the process, increasing its conveyor system and loading technology offering.

BEUMER, a leader in the manufacture of intralogistics systems for conveying, loading, palletising, packaging, sorting and distribution, signed the purchase agreement in early May, with the transaction legally concluding on June 9, 2022.

The BEUMER Group has held a stable position in the bulk materials technology market for decades and, with the acquisition of the FAM Group, the systems provider has significantly strengthened its market position in the minerals and mining sectors, it said.

The FAM Group is a manufacturer of conveyor systems and is an internationally operating, medium-sized group with 750 employees. The company is one of the world’s leading full-range bulk handling and processing equipment suppliers, able to plan, design and manufacture turnkey plants and systems for mining, extracting, loading and storing minerals, raw materials and goods.

In addition to expanding the BEUMER Group’s portfolio, FAM’s know-how and global positioning also complement BEUMER’s competence in the project planning of plants, BEUMER said. FAM brings not only planning and engineering, but the entire value chain to the BEUMER Group, including aftersales service.

The company concluded: “The BEUMER Group offers FAM a long-term perspective anchored on the highest possible quality, sustainability and innovation: for almost 90 years now, the BEUMER Group, a family-run and wholly self-financed company, has been developing customized system solutions for the mining industry, among others.”

Earlier this month, Rudolf Hausladen became the new CEO of BEUMER Group, succeeding Dr Christoph Beumer, who had led the group as CEO since 2000.

BEUMER Group has responded to the changing demands of dry bulk customers with two new products that leverage its existing expertise in pipe and troughed belt conveying technology.

Speaking at a recent virtual media event, Andrea Prevedello, CEO of BEUMER Group Austria, announced the new additions under the U-Shape conveyor family.

Leveraging the advantages of pipe conveyors and troughed overland belt conveyors, the U-Shape conveyor enables an environmentally friendly and efficient operation in port terminals, BEUMER Group said. The design allows the implementation of more narrow curve radii than a troughed belt conveyor with higher mass flows than a pipe conveyor, all with dust-free transport, the company says.

The company explained the hybridisation of the two: “The troughed belt conveyors allow high mass flows even in case of heavy and robust materials. Their open design makes them suitable for coarse materials and very large volumes.

“The pipe conveyors, on the contrary, present other specific advantages. The idlers form the belt to a closed tube protecting the material transported against external influences and the environment from emissions such as material loss, dust or odours. Partition plates with hexagonal cuts and idlers in a staggered arrangement keep the tube shape closed. The pipe conveyors allow the implementation of more narrow curve radii and larger angles of inclination than open troughed belt conveyors.”

With requirements changing – the quantities of bulk materials growing, the routing becoming increasingly complex and environmental considerations rising – BEUMER Group found the need to develop the U-Shape conveyor.

“In this solution, a special idler configuration brings the belt in a u-shape,” it said. “Thus, the bulk material reaches the discharge station. An idler configuration similar to that for the troughed belt conveyor is used for opening the belt.”

Bringing together the advantages of open troughed belt conveyors and closed pipe conveyors, conveyed material is protected against external influences such as wind, rain or snow; and the environment against possible material loss and dust.

Within the family are two products that offer higher curve flexibility, higher capacity, bigger lump size allowance, no spillage and reduced power consumption, according to Prevedello.

The T-U-Shape conveyor is a U-shape conveyor designed like a normal troughed belt conveyor, but comes with a 30% reduction in width, allowing the ability to take on tighter curves, Prevedello says. This looks to have many applications in tunnelling applications.

The P-U-Shape conveyor, as the name would infer, is derived from the pipe conveyor, but offers 70% higher capacity with the same width and 50% higher lump size allowance, Prevedello says, explaining that it could allow BEUMER Group to consider the use of pipe conveyors in space-constrained environments.

New installations will obviously be targeted as part of this new product launch, but Prevedello says there are both greenfield and brownfield application possibilities with these new conveyors.

The T-U-Shape conveyor had more ‘new’ installation opportunities in tunnelling applications, he said, with the tight turning radii benefits allowing for small installations in tunnels.

With many ports shifting focus away from coal and handling different materials, the P-U Shape conveyor’s increased capacity and higher lump size flexibility could be of benefit in brownfield applications, he added.

“The ports are facing the challenges of dealing with new materials, so adapting what they have is important here,” he said.

REMA TIP TOP AG says it has acquired HEMPEL Industrievulkanisation GmbH & Co. KG, a conveyor technology company based in Neu-Ulm in a transaction that further expands its materials processing technology service network in southern Germany.

For 45 years, Hempel Industrievulkanisation has been a force to be reckoned with in the field of conveyor technology in southern Germany, focusing on the installation, repair and splicing of conveyor belts made of rubber and PVC, REMA TIP TOP says.  The company is also a service partner for the maintenance and renewal of conveyor systems, coating and repair of conveyor belt drums and idlers and wear protection technology.

“Both companies are linked by a long-standing partnership, which will be taken to the next level with the acquisition,” company Owner Roy Hempel, who started his career at REMA TIP TOP, said.

Bodo Wein of REMA TIP TOP, who will support Roy Hempel on the management board, said “Service and solution orientation will continue to be the unrestricted focus of our thinking and business in the future.”

Martin Engineering, a leader in conveyor accessories and bulk material handling solutions, has launched what it says is a comprehensive digital educational resource for conveyor operation and safety.

The online Foundations™ Learning Center draws from the collective knowledge and expertise gathered over nearly 80 years solving bulk handling challenges. Aimed at apprentice technicians and experienced engineers alike, the non-commercial information is offered at no charge and is accessible by computer, tablet, or smartphone.

An extension of the Foundations training curriculum, t he Learning Center uses a mix of text , photos, videos, webinars, online events , and live experts available to answer questions . T he result is a unique central hub for industry professionals of all knowledge levels to use as a resource for building a deep understanding of material flow and safe, efficient conveyor operation, Martin Engineering says.

“ N ot everyone learns by reading a textbook or following a lecture, so we set up the Learning Center as the place to go for all things conveyor and bulk handling for all types of learners,” Jerad Heitzler , Foundations Training Manager and curator of the Learning Center, said. “Technology allows us to accommodate different learning styles by offering several avenues to the same knowledge. The centre is designed in categories to provide easy access to the resources and organised  so that people can find what they need quickly.”

The Learning Center is an online portal where plant operators, managers, and supervisors can send members of their teams to build their understanding of every aspect of conveyor operation and safety practices. The platform provides visitors with immediate solutions that are applicable and actionable, regardless of the equipment manufacturer. It is also a place to learn about the latest technologies, techniques , and compliance measures.

Building from its comprehensive training resources Foundations, The Practical Resource for Cleaner, Safer, More Productive Dust & Material Control and Foundations for Conveyor Safety , the Learning Center has been modelled on decades of knowledge from Martin’s experienced team of engineers and field technicians in every corner of the bulk materials handling industry. To start with, t he creators have focused on the basics of conveyor operation and safety, with more advanced subject matter being added regularly.

The Learning Center resources supplement and enhance Martin Engineering’s extensive Foundations training program . The in -person training program combines the hands-on instruction and personal attention found in a classroom setting with the Learning Center technology, the textbook, and comprehension testing.

The modules of the Learning Center are split into nine categories :

Once the Learning Center has been fully explored, users should have the foundation needed to operate belt conveyors safely and effectively. If managers choose, they can refer their employees to the Learning Center to gain professional development credits toward their certification to become qualified as maintenance technician s , operators, foremen, m illwrights/fitters and so on.

The feedback from people who have already used the Learning Center has been excellent, according to the company. Users find it informative, easy to use, engaging, and an overall enjoyable experience. Managers and supervisors say they like having a trustworthy and cost-effective source for quick, unbiased information.  

“Of course, nothing replaces hands-on training and on-the-job experience, so that’s why the training system is called Foundations,” Heitzler said. “We provide the basic knowledge needed to work safely and efficiently in a platform that they can easily access when they need it.”

Higher production demands across all bulk handling segments require increased efficiency at the lowest cost of operation, in the safest and most effective manner possible, R Todd Swinderman, CEO Emeritus of Martin Engineering, writes*.

As conveyor systems become wider, faster and longer, more energy output and more controlled throughput will be needed. Add an increasingly stringent regulatory environment, and cost-conscious plant managers must closely review which new equipment and design options align with their long-term goals for the best return on investment (ROI).

Safety is likely to become a new source of cost reduction. The percentage of mines and processing facilities with a robust safety culture are likely to increase over the next 30 years to the point where it is the norm, not the exception. In most cases, with only a marginal adjustment to the belt speed, operators quickly discover unanticipated problems in existing equipment and workplace safety. These problems are commonly indicated by a larger volume of spillage, increased dust emissions, belt misalignment and more frequent equipment wear/failures.

Higher volumes of cargo on the belt can produce more spillage and fugitive material around the system, which can pose a tripping hazard. According to the US Occupational Safety and Health Administration (OSHA), slips, trips and falls account for 15% of all workplace deaths and 25% of all workplace injury claims. Moreover, higher belt speeds make pinch and sheer points in the conveyor more dangerous, as reaction times are drastically reduced when a worker gets clothing, a tool or a limb caught from incidental contact.

The faster the belt, the quicker it can wander off its path and the harder it is for a belt tracker to compensate, leading to spillage along the entire belt path. Caused by uncentred cargo, seized idlers or other reasons, the belt can rapidly come in contact with the mainframe, shredding the edge and potentially causing a friction fire. Beyond the workplace safety consequences, the belt can convey a fire throughout the facility at extremely high speed.

Another workplace hazard − one that is becoming progressively more regulated − is dust emissions. An increase in the volume of cargo means greater weight at higher belt speeds, causing more vibration on the system and leading to reduced air quality from dust. In addition, cleaning blade efficiency tends to decline as volumes rise, causing more fugitive emissions during the belt’s return. Abrasive particulates can foul rolling components and cause them to seize, raising the possibility of a friction fire and increasing maintenance costs and downtime. Further, lower air quality can result in fines and forced stoppages by inspectors.

As belts get longer and faster, modern tracking technology becomes mandatory, with the ability to detect slight variations in the belt’s trajectory and quickly compensate before the weight, speed and force of the drift can overcome the tracker. Typically mounted on the return and carry sides every 70 to 150 ft (21-50 m) − prior to the discharge pulley on the carry side and the tail pulley on the return − new upper and lower trackers utilise innovative multiple-pivot, torque-multiplying technology with a sensing arm assembly that detects slight variations in the belt path and immediately adjusts a single flat rubber idler to bring the belt back into alignment.

To drive down the cost per tonne of conveyed material, many industries are moving toward wider and faster conveyors. The traditional troughed design will likely remain a standard. But with the push toward wider and higher-speed belts, bulk handlers will need substantial development in more reliable components, such as idlers, impact beds and chutes.

A major issue with most standard chute designs is that they are not engineered to manage escalating production demands. Bulk material unloading from a transfer chute onto a fast-moving belt can shift the flow of material in the chute, resulting in off-centre loading, increasing fugitive material spillage and emitting dust well after leaving the settling zone.

Newer transfer chute designs aid in centring material onto the belt in a well-sealed environment that maximises throughput, limits spillage, reduces fugitive dust and minimises common workplace injury hazards. Rather than material falling with high impact directly onto the belt, the cargo’s descent is controlled to promote belt health and extend the life of the impact bed and idlers by limiting the force of the cargo at the loading zone. Reduced turbulence is easier on the wear liner and skirting and lowers the chance of fugitive material being caught between the skirt and belt, which can cause friction damage and belt fraying.

Longer and taller than previous designs, modular stilling zones allow cargo time to settle, providing more space and time for air to slow down, so dust settles more completely. Modular designs easily accommodate future capacity modifications. An external wear liner can be changed from outside of the chute, rather than requiring dangerous chute entry as in previous designs. Chute covers with internal dust curtains control airflow down the length of the chute, allowing dust to agglomerate on the curtains and eventually fall back onto the belt in larger clumps. And dual-skirt sealing systems have a primary and secondary seal in a two-sided elastomer strip that helps prevent spillage and dust from escaping from the sides of the chute.

Faster belt speeds can also cause higher operating temperatures and increased degradation of cleaner blades. Larger volumes of cargo approaching at a high velocity hit primary blades with greater force, causing some designs to wear quickly and leading to more carry back and increased spillage and dust. In an attempt to compensate for lower equipment life, manufacturers may reduce the cost of belt cleaners, but this is an unsustainable solution that doesn’t eliminate the additional downtime associated with cleaner servicing and regular blade changes.

As some blade manufacturers struggle to keep up with changing production demands, industry leaders in conveyor solutions have reinvented the cleaner industry by offering heavy-duty engineered polyurethane blades made to order and cut on site to ensure the freshest and longest lasting product. Using a twist, spring or pneumatic tensioner, the primary cleaners are forgiving to the belt and splice but are still highly effective for dislodging carry back. For the heaviest applications, one primary cleaner design features a matrix of tungsten carbide scrapers installed diagonally to form a 3D curve around the head pulley. Field service has determined that it typically delivers up to four times the service life of urethane primary cleaners, without ever needing re-tensioning.

Taking belt cleaner technology into the future, an automated system increases blade life and belt health by removing blade contact with the belt any time the conveyor is running empty. Connected to a compressed air system, pneumatic tensioners are equipped with sensors that detect when the belt no longer has cargo and automatically backs the blade away, minimising unnecessary wear to both the belt and cleaner. Additionally, it reduces labour for the constant monitoring and tensioning of blades to ensure peak performance. The result is consistently correct blade tension, reliable cleaning performance and longer blade life, all managed without operator intervention.

Systems designed to operate at high speeds over considerable distances are generally powered only at vital locations such as the head pulley, disregarding adequate power for autonomous ‘smart systems’, sensors, lights, accessories or other devices along the length of the conveyor. Running auxiliary power can be complicated and costly, requiring transformers, conduits, junction boxes and oversized cables to accommodate the inevitable voltage drop over long runs. Solar and wind can be unreliable in some environments, particularly in mines, so operators require alternative means of reliable power generation.

By attaching a patented mini-generator to idlers and using the kinetic energy created by the moving belt, the accessibility obstacles found in powering ancillary systems can now be overcome. Designed to be self-contained power stations that are retrofitted onto existing idler support structures, these generators can be employed on virtually any steel roller.

The design employs a magnetic coupling that attaches a “drive dog” to the end of an existing roller, matching the outside diameter. Rotated by the movement of the belt, the drive dog engages the generator through the outer housing’s machined drive tabs. The magnetic attachment ensures that electrical or mechanical overload does not force the roll to stop; instead, the magnets disengage from the roll face. By placing the generator outside the material path, the innovative new design avoids the damaging effects of heavy loads and fugitive material.

Automation is the way of the future, but as experienced maintenance personnel retire, younger workers entering the market will face unique challenges, with safety and maintenance skills becoming more sophisticated and essential. While still requiring basic mechanical knowledge, new maintenance personnel will also need more advanced technical understanding. This division of work requirements will make it difficult to find people with multiple skill sets, driving operators to outsource some specialised service and making maintenance contracts more common.

Conveyor monitoring tied to safety and predictive maintenance will become increasingly reliable and widespread, allowing conveyors to autonomously operate and predict maintenance needs. Eventually, specialised autonomous agents (robots, drones, etc) will take over some of the dangerous tasks, particularly in underground mining as the ROI for safety provides additional justification.

Ultimately, moving large quantities of bulk materials inexpensively and safely will result in the development of many new and higher capacity semi-automated bulk transfer sites. Previously fed by truck, train or barge, long overland conveyors transporting materials from the mine or quarry site to storage or processing facilities may even impact the transportation sector. Stretching vast distances, these long bulk handling networks have already been built in some places with low accessibility but may soon be commonplace in many areas around the world.

*This story was written by R Todd Swinderman, CEO Emeritus of Martin Engineering

Rail-Veyor Technologies Global Inc (RVTG) has welcomed James “Jim” Hawkins as its new Chief Executive Officer (CEO), effective October 1.

Hawkins takes over the executive duties from Jim Fisk who filled the role during a year-long global search. Fisk remains as Executive Chairman of the Board of Directors.

During a career spanning 35 years at Caterpillar, Hawkins led various parts of the organisation in the functional areas of Engineering, New Product Development, Sales/Marketing, Dealer Administration and Product Management. Most recently he served as General Manager of the MineStar technology business, where he was responsible for the development, sales, implementation, operations and support of technologies developed for the mining industry to aid customers in enhancing their safety while increasing productivity and efficiency.

Notably, he led the organisation to develop and commercialise autonomy for mobile equipment – a project which created unparalleled customer value and positioned the company as a leader in this transformational technology, RVTG said.

Hawkins said: “I was attracted to Railveyor by the potential of this technology to improve the safety, efficiency and environmental sustainability of how material is moved in the mining industry. We have a great team of people with tremendous experience in solving customer problems, and I am honoured to lead them as a part of the Railveyor organisation.”

Fisk added: “The product continues to prove its value to more and more customers around the world and so, again, we’re at a turning point in the life of Railveyor as a company. I have no doubt that Jim Hawkins has the experience, insight and character to wisely lead our accelerating enterprise into the next chapter of Railveyor.”

One of the latest Rail-Veyor contracts is at PJSC Su k ha Balka’s Frunze underground iron ore mine in Ukraine.

Hawkins is a graduate of the University of Nebraska with a degree in Mechanical Engineering and has completed the Executive Leadership Program at Stanford University.

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