Tag Archives: SMD

Metso Outotec Vertimill energy efficient tech heading to Australia gold mine

Metso Outotec has won an order to deliver two energy-efficient Vertimill® VTM-4500 stirred mills to a gold mine in Australia.

These vertical grinding mills will be the largest of their kind to be installed in Australia when the delivery occurs in 2021, the company says.

The typical value for this type of an order is in the range of €10-15 million ($11.7-17.5 million), depending on the scope of delivery. The order has been booked in Metso Outotec’s orders received in the September quarter of 2020.

Metso Outotec’s Vertimill provides the lowest total cost of ownership compared with other grinding mills in many applications thanks to its high energy efficiency, reduced media consumption, low installation cost as well as minimal liner wear and maintenance, the company says. It is capable of handling feed sizes up to 6 mm and grinding to products less than 20 microns. It is available in standard mill sizes ranging from 11 kW to 3,353 kW.

Metso Outotec says it is the only manufacturer worldwide than can offer multiple stirred mill technologies (Vertimill®, HIG™mill and SMD) to support their customers with the most suitable and efficient mill for their application.

Metso Outotec SMD mills to boost output at Boliden’s Harjavalta concentrator

Boliden Harjavalta has chosen Metso Outotec’s SMD grinding mills to improve the capacity of its slag concentrator, in Finland, the mining OEM says.

Boliden Harjavalta produces high-quality metals for European industrial customers, churning out 120,000 t of copper and 26,000 t of nickel in 2019.

The purpose of the slag concentrator is to recover copper from the slag produced in the copper smelter and to return it to the copper production cycle as high-quality slag concentrate, Metso Outotec said, with grinding being an essential part of the slag concentration process.

The raw materials of the Boliden Harjavalta smelter consist of concentrates and recycled metals, according to Boliden, with the company’s two mines in Finland – Kylylahti and Kevitsa – providing the smelter with concentrates. Concentrates are also purchased from external mines, Boliden says.

The order has been booked in Metso Minerals’ June quarter 2020 orders received.

Based on tests, Metso SMD (stirred media detritor, specialised for fine grinding applications) was chosen as the grinding technology, Metso Outotec said.

“Maintenance for the SMD is safe and cost-effective thanks to the simple mechanical structure of the mill and the smaller number of moving parts compared to traditional grinding mills,” the company explained.

Timo Sarvijärvi, Metso Outotec’s Head of Mining in the Nordics market area, said the company, at testing stage, noticed slag could be processed very efficiently using SMD technology.

“Now the slag concentrator can process larger amounts of material, without compromising the targets set for copper recovery,” Sarvijärvi said.

Metso looks to grind down GHG emissions with energy-efficient technology

Having recently won the approval of the Science Based Targets initiative (SBTi) for its greenhouse gas (GHG) targets, Metso’s Climate Program now has the recognition it deserves.

The GHG goals are applicable to all relevant emission sources: production, procurement, inbound and outbound transportation as well as the use of Metso’s products.

Following on from this environmental win, IM put some questions to Metso’s Director of Sustainable Business Development, Kaisa Jungman, to find out what impact these climate change aims might have on the mining equipment manufacturers’ product offering and how the company is already leading from the front with its environmental sustainability initiatives.

It’s worth acknowledging, first, that these GHG goals are all-encompassing.

As a scope 1 and 2 GHG target, Metso has committed to a 25% reduction in carbon emissions in production by 2030, while 30% of its suppliers – in terms of spend – are required to set science-based emission targets by 2024. Metso also aims for a 20% reduction in transportation emissions by 2025 (scope 3 GHG emissions target) by streamlining transportation routes and optimising warehouse locations.

Through extensive research and development work, Metso says it has been able to significantly reduce the energy consumption in customer processes. To continue this development, the company is aiming for a 10% reduction in GHG emissions in the most “energy-intensive customer processes” using Metso products by 2025.

The company is also demanding energy-efficiency targets in its Metso R&D projects, and offsetting flight emissions by 100% by 2021.

The target to lower GHG emissions by 10% in the most “energy-intensive customer processes” stood out in these targets, and it was hardly surprising to find out grinding falls into this category.

“Grinding is the most energy-intensive stage of minerals processing,” Jungman said. “Overall, it is estimated that comminution counts for 3-5% of the energy consumption in the world and grinding is part of this.”

In the company’s climate program it has included three of its products – the HRC™ high pressure grinding roll, Vertimill® and stirred SMD (stirred media detritor) – to help achieve this 10% cut in GHGs.

“We have estimated, based on our installed base, in 2018, that approximately 1,073,648 t of CO2 emissions were saved through these energy efficient grinding technologies,” she said, explaining that these savings were calculated by comparing its three solutions with conventional technology.

At this stage, it is only the HRC, Vertimill and SMD included in this calculation – due to their substantial energy and emission reduction credentials and the company’s ability to quantify accurately the estimated savings – but Jungman said Metso plans to widen the scope of the technologies to be included.

“In addition to our climate program, we are also looking into other environmental benefits the customers are gaining through our solutions,” she said.

“To improve energy and emissions efficiency in the future, our target is that all our R&D projects will set energy-efficiency targets by 2021.”

She concluded on these technologies: “I would say that this climate program is an important first step and we will continue developing even more comprehensive sustainability targets for our technologies.”

When it comes to displaying evidence of where the company is reducing scope 1 (generated from fuels used in production) and 2 (generated from purchased energy) emissions, Jungman could point to several examples.

“We have installed solar panels in some of our locations already and are looking now for opportunities to install more in several locations in the coming years,” she said.

In some of the company’s facilities, a percentage of the electricity it purchases is already from renewable sources, and Metso is investigating the possibilities of expanding this, Jungman added.

“In addition to electricity consumption, we are also searching for renewable alternatives for the other forms of our energy consumption, including, for example, replacing natural gas consumption with renewable alternatives.”

The company has also, in recent years, invested in many energy efficiency and renewable energy projects, according to Jungman.

“As an example, in our foundry in China, we have invested in a new type of melting furnace to gain better energy efficiency.

“In another production location, we have installed technology to recover process heat from the exhaust air to be used as heating energy. We have also invested in the process automation and insulation of the furnaces to gain better energy efficiency.”

She concluded: “Reducing greenhouse gas emissions is something we take seriously, and to which Metso is fully committed. We want all our stakeholders to be involved in the work to reach these important targets and to aim even higher.”