Tag Archives: Seda Kahraman

Weir Minerals targets customer ‘pain points’ with integrated solutions teams

Weir Minerals says its integrated solutions teams are combining experience from comminution to tailings, from chemistry to hydraulics, to deliver reliable solutions that solve its customers’ most frustrating pain points.

Since brothers James and George Weir founded what would become the Weir Group with their 1871 invention on the Weir boiler feed pump, engineering expertise, the company says, has been the driving force of its success.

“For almost 150 years, Weir has built its business on the principle that if something’s worth doing, it’s worth doing right and to do something right on a mine, you need the right team,” it said.

This is where the company’s integrated solutions teams come in, which combine technical expertise, local access and global knowledge to optimise mining companies’ entire process, according to the company.

John McNulty, Vice President of Global Engineering and Technology for Weir Minerals, says the industry needs integrated solutions now more than ever.

“With this approach, we continually listen to our customer’s pain points and identify ways in which we can improve their process,” he said. “Integrated solutions also aligns closely with the Weir Group’s sustainability strategy.

“We often talk to our customers about the challenges they face in terms of energy consumption, water usage and waste, and brainstorm ways in which we can help reduce their environmental impact. In this current climate, this approach is absolutely critical.”

When confronted with a problem that requires more than a single piece of equipment, Weir Minerals draws on its integrated solutions teams, made up of process engineers, design engineers, product experts, materials scientists, supply chain and logistics experts, as well as local sales teams who know the customer’s site.

These multi-disciplinary teams ensure a problem is considered from all perspectives, identifying potential issues and opportunities to optimise the circuit with upstream and downstream benefits, according to Weir Minerals.

With almost 10,000 employees operating in more than 50 countries, Weir Minerals can build teams with experience working in every kind of mine and quarry, in environments ranging from Canada’s frozen oil sands region and Indonesia’s rain-prone coal mines to remote deserts in Chile, Mongolia and Australia.

“As well as optimising equipment to provide maximum efficiency and wear life in any given situation, the integrated solutions team’s expertise allows them to tailor solutions that can be flown onto site when the roads freeze in the winter, prevent crocodiles climbing onto floating equipment, and utilise waste products like tailings as a resource,” the company says.

Seda Kahraman, a Regional Process Engineering Manager for Weir Minerals, says the company believes nothing is ‘impossible’, with engineers continually looking for better ways of doing things.

“Our team is made up of specialists each possessing different process systems’ expertise including, but not limited to: troubleshooting, designing tools and process simulation programs,” he said. “We combine this wealth of knowledge to deliver innovative solutions that address our customers’ varied needs.”

The key to Weir Minerals’ integrated solutions approach is the entire team of experts collaborating to identify all root causes of a customer’s challenge, considering all the contributing factors – which is where Weir Minerals’ interdisciplinary expertise is so important, it says.

The team perform process audits during site visits to identify bottlenecks and then, using flowsheets, mass balances, 3D layouts, and feasibility studies, advise on the most appropriate solution for the customer to not just resolve the problem they came to Weir Minerals with, but to optimise their process to save energy, reduce water waste or increase capacity, and ultimately save the customer money.

MATSA wins quick payback from Weir Cavex hydrocylone installation

Weir Minerals says the introduction of a Cavex® hydrocyclone cluster at MATSA’s processing plant, in Spain, has delivered payback in just three days.

MATSA is a modern Spanish mining company based in the north of the Iberian Pyrite Belt, a mining district that has been active for more than 2,500 years. The company, owned 50:50 by Trafigura and Mubadala Investment Company, owns and operates three mines in the province of Huelva, Spain: Aguas Teñidas and Magdalena, located in Almonaster la Real, and the Sotiel mine, in Calañas.

The processing plant, in Almonaster, recently went through a €236 million ($266 million) expansion that saw capacity go from 2.2 Mt/y to 4.4-4.7 Mt/y through the addition of a second plant. The plant now has the capacity to treat copper and polymetallic ores through three grinding lines.

Weir Minerals says it has been working with MATSA to optimise its minerals treatment plant’s primary and secondary grinding circuits.

Seda Kahraman, Regional Process Engineer Manager for Weir Minerals, said: “We have been working with MATSA for 12 years and our service team has built a solid partnership with them. We opened a service site close to MATSA and employed a full-time Service Engineer on site to provide adequate support.

“Their success is our success, and working on this particular project was both very challenging and very rewarding. They needed to increase their grinding circuit capacity from 275 t/h to 307 t/h, whilst reducing the quantity of ultrafines in the final overflow of the second hydrocyclone cluster.”

Antonio Gamiz, MATSA Plant Technical Director, said: “To maximise our plant productivity we needed a Cavex hydrocyclone cluster that was specifically designed to our application. This was achieved without an extension of the plant area and with minimal capital expenditure.”

Weir Minerals took a holistic approach to this challenge by first creating a simulation of the entire primary and secondary grinding circuit. This enabled it to visualise how the process should be running, and the most appropriate way to deliver this.

Following the simulation, the best operating conditions were calculated to support the required capacity increase and elimination of slimes, Weir said. This included the ball mills, mill liners and hydrocyclones. Using 3D laser scanner technology, the team at Weir Minerals developed a suitable layout for the equipment, including modification and steel structures.

Kahraman said:“This truly was a turnkey solution; the team had to pull together all their smarts, capabilities and tools to ensure MATSA’s grinding capacity was raised, whilst simultaneously reducing the quantity of ultrafines from their overflow. We achieved this with a range of tools and techniques including engineer design, subcontract management, and manufacturing of steel.”

To deliver the solutions MATSA required, Weir Minerals replaced the primary hydrocyclone cluster, as well as the spare parts on the secondary hydrocyclone cluster; redesigned the steel structure and walkways; installed new hydrocyclone feed pumps and piping configurations, installing and commissioning the entire project, Weir said.

The modification to the steelwork and piping, as well as the assembly of the new three-way Cavex 650CVX hydrocyclone cluster were completed in less than four days without any production interruptions, according to Weir.

Upon analysing samples from various points in the grinding circuit, it was confirmed the feed capacity had successfully increased to 300-307 t/h.

Kahraman said: “In addition to the desired increase in grinding capacity, we also improved circulating load in the primary ball mill and restored the feed pressure to the Cavex hydrocyclones to 85 kPa. We are thrilled that MATSA achieved payback in just three days due to the increase in production by 500 t/d, and achieved additional revenue of €2,751/h.”