Tag Archives: FLSmidth

FLSmidth after sub-Saharan Africa growth with manufacturing move

FLSmidth South Africa has relocated the manufacturing of its core screen media products to the Delmas Supercenter facility, providing, it says, a cost-effective base from which to grow its sub-Saharan markets.

The move follows the 2017 decision by FLSmidth to proceed with a significant investment at the 120,000 m² premises in Delmas, Mpumalanga, South Africa.

Stephan Kruger, FLSmidth Director for Manufacturing and Warehousing in the region, said: “The targeted efficiency improvements for the production lines at the facility will allow us to better serve our extensive installed base of FLSmidth equipment in the sub-Saharan Africa and Middle East region.”

In line with this strategy, FLSmidth has opted to focus on the in-house manufacture of three core product lines – polyurethane, wedge wire, and ceramic wear solutions.

FLSmidth, last year, concluded the sale of its non-core screen media product lines, including woven wire screens, perforated plate and wire conveyor belts, to Crusher Support Services. During this process, FLSmidth secured a preferential supply agreement to support local industry customers with the continued supply of these products.

Kruger said: “We have invested in state-of-the-art equipment, including full computer numerical control (CNC) machining capability. The new facilities include 5-axis and 6-axis machining centres, introducing a high level of technology to support the product lines in our business while optimising production costs.”

The investment in production capacity will allow FLSmidth to manufacture a broader range of components for its spare parts portfolio in-house, and to do this more cost effectively, it said.

Design and construction activities began in 2018 and the infrastructure development is nearing completion. A formal launch is planned for April, when the facility will be fully functional and production will have commenced, according to the company.

This Supercenter is strategically positioned close to customers and has the capabilities for warehousing, production of FLSmidth equipment and spare parts, refurbishments, rebuilds and retrofits, the company said. Current manufacturing activities produce over 150 strategically selected parts for the FLSmidth product range, Kruger said.

The wedge wire screens to be produced at the facility are commonly used in carbon recovery in carbon-in-pulp and carbon-in-leach plants in the gold sector. They are also used for dewatering and magnetite recovery in the coal sector and in other applications such as water filtration and sugar production, according to the company.

The polyurethane products include screen panels and larger spares such as rotors and stators used in the flotation process. Ceramic wear solutions to be produced and distributed from the Delmas facility include the WEAR MAX™ ceramic wear compound and FerroCer® impact wear panels, which combine steel and ceramic parts and are commonly used in feed chutes to address impact and abrasion.

The Delmas operation includes a 10,500 m² workshop with 120-t lifting capacity and 11.5 m under crane hook. More than 100 staff members are currently employed at the facility, which hosts offices, warehouse facilities and a training centre that can accommodate up to 65 people for technical training purposes, according to FLSmidth.

FLSmidth’s Lindholm says miner investment in remote operations centre paying off

In a wide-ranging talk on digitisation at the 2019 SME Annual Conference & Expo in Denver, Colorado, Mikael Lindholm, Chief Digital Officer of FLSmidth, said the use of remote operations centres was providing returns to those mining companies employing them.

Lindholm said FLSmidth had seen an influx of remote operations centres “popping up” across the industry, he told delegates during his keynote presentation.

“It is unhealthy to go up in the mountains or in the pits in the mines,” he said. “Being in a city is much safer. The less people you have in the mine, the less injuries you will see.”

He added: “Most mines, today, have a central control unit, but we now see to a greater extent remote control centres outside of the mines.”

Referencing a recent visit to Codelco and its remote operations centre in Santiago, Lindholm said the state-owned copper miner was running two operations remotely from this location.

The centre had allowed Codelco to attract personnel in the Chile capital, in addition to being able to coordinate all activities from one location, he said.

“From there, they manage everything happening in the pit, to the process plant to the logistics,” he said.

By coordinating these activities and having all the people in the same room, Codelco is making significant savings, Lindholm said. “They are making savings of around $50 million annually from this – purely from coordinating activities.”

This evolution is part of a wider move in the industry to improve productivity, maintenance and safety.

Lindholm, quoting statistics from McKinsey, said by 2025, there will be yearly savings of around $250 billion around operations management – “to do with process optimisation and coordination” – $100 billion/y on equipment maintenance – “thanks to condition monitoring, predictive and prescriptive maintenance” – and $10 billon/y on safety.

FLSmidth completes laboratory mining solutions line with IMP Automation Group buy

FLSmidth says it has completed its portfolio of automated laboratory solutions for the mining industry with the takeover of IMP Automation Group.

The market for automated laboratories is growing due to a combination of high exploration activity and an increased focus on productivity, automation and digitalisation, according to FLSmidth.

“IMP is the global leader in automated laboratory solutions for the mining industry and has a strong foothold in Australia and South Africa. Its solutions complement the products FLSmidth offers for quality control and optimisation for the mining process,” the company said.

The acquisition includes more than 130 IMP employees, including the Managing Director, Boyne Hohenstein.

Hohenstein said: “In FLSmidth, we have found a partner with the right global sales network to take us to the next level. For years, we have combined profound laboratory process knowledge with automation skills and developed novel and innovative solutions. I am very excited that we now can reach a global audience with our offerings and solutions.”

Manfred Schaffer, President Mining for FLSmidth, said: “Knowing your ore characteristics from the mine and all the way through the processing plant is of increasing importance in mining as declining ore grades make it necessary to increase productivity by process optimisation. We see a strong match between some of our digital initiatives in FLSmidth and IMP’s automation solutions that will help miners get better data on their ore and assist in optimising the processing.”

Included in the transaction is IMP’s 50% share in a joint venture, which provides complete operations and maintenance-based solutions for automated labs.

The acquired parts of IMP Automation Group, including the JV, generated revenues in excess of DKK250 million ($38 million) in 2018, with the acquisition expected to be accretive to FLSmidth Group margins.

The takeover is subject to customary closing conditions and closing is expected in the June quarter.

IMP says it works with like-minded customers to provide innovative robotics and automation solutions from sampling to analysis that improve ergonomics, health and safety for laboratory operators, improve integrity, quality and precision of analytical data and improve efficiencies.

It designs and supplies manual, semi- and fully-automated robotic sample preparation and process control laboratories, turnkey sampling systems and laboratories for mining, metallurgical, cement, non-ferrous industry and steel plants.

Its customers include Anglo American Platinum, Freeport McMoRan, BHP and Rio Tinto

FLSmidth seals the deal with Krebs Technequip TGW knife gate slurry valves

FLSmidth says its Krebs® Technequip™ TGW series of wafer-style knife gate slurry valves have proven themselves across the globe.

The valves are designed specifically for the harsh and abrasive slurries encountered in the mineral processing and power industries, with applications ranging from cement, sand and gravel to coal, phosphate, ash and alumina.

They are designed as a space saving option for heavy-duty applications, according to the company. The long-lasting replaceable elastomer sleeves offer a sealing solution that uses the latest technology, with the valve’s operation based on its full port design, FLSmidth said. This allows the gate to be fully isolated by the sleeves from the process in the open position.

“As the gate closes, it pushes between the two sleeves, discharging a small amount of material out of the bottom of the valve,” FLSmidth said. “This prevents material build-up in the seat area ensuring full gate closure, as well as preventing damage to the gate. When the gate is in the open or closed position, there is a 100% bi-directional bubbletight seal and zero downstream leakage.”

To ensure long life, all valves are supplied with dust boots – or ‘bellows’ – as a standard feature, protecting valve stems and actuators. Hardware such as nuts, bolts, and washers, meanwhile, are zinc-plated to protect against corrosion. Each component is also individually epoxy-painted before assembly.

Several actuation options are available, including pneumatic, hydraulic, electric and bevel-gear actuators, as well as manual hand-wheel operators, the company said.

The choice of materials is vital to the valves’ performance, reliability and lifespan, according to FLSmidth. “Sleeves are constructed of dense moulded elastomer, complete with an integral stiffener ring moulded into the sleeve. They are also available in a range of different materials to suit the application,” the company said. The valve housing is ASTM A536 cast ductile coated for corrosion resistance, while the upper cavity is pre-lubricated with a silicone-based grease, to improve actuation and decrease wear.

Founded in Toronto, Canada, in 1957, Technequip was acquired by FLSmidth in 1993 and integrated into the company in 2007. With installations across the globe, the slurry valves have proven themselves worldwide with features like the fluorocarbon gate coating for reduced friction during actuation, the high strength stainless steel gate clevis and two-coat epoxy paint. The valves also contain no packing gland, as this can jam the gate, and have machined gate guides so no spacer bars are required. Various accessories are available, including solenoids, limit switches and junction boxes.

FLSmidth to move into ROL copper demonstration mode in 2019

FLSmidth has provided an update on its Rapid Oxidative Leach (ROL) technology at the same time as reporting a boost in revenue and profit for 2018.

Releasing its 2018 annual report, the company said revenue grew by 4% year-on-year to DKK18.75 billion ($2.8 billion) in 2018, with a 13% growth in order intake (DKK19.17 billion) attributed to strong results from its mining division.

Its mining division saw an order intake of DKK12.86 billion, 24% higher than 2017,  driven by growth in copper, while earnings before interest, taxes and amortisation came in at DKK1.19 billion, 18% up on 2017’s result.

Within the annual report, the company provided an update on its ROL technology, a process it first announced the discovery of in May 2015.

“This groundbreaking solution overcomes three major challenges in the mining industry (copper in particular); declining ore grades, increasing levels of arsenic and other impurities, and reduced production from existing solvent extraction and electrowinning facilities due to falling recoveries from heap leach when transitioning from oxide to sulphide ores,” the company said.

FLSmidth said it was currently testing concentrates from several interested copper miners at its pilot plant in Salt Lake City, US (pictured), and at a third-party independent laboratory.

“The purpose of these tests is to establish data for the customers to determine if they would like to move ahead with prefeasibility studies,” FLSmidth explained.

During 2017-2018, the concentrates from one customer were tested and indicated a positive return on investment. “We have agreed with this customer to supply equipment and operate a demonstration-scale ROL process plant at their facility in South America,” FLSmidth said, adding, “this is an important step in scaling up and commercialising the ROL process”.

In addition to copper, the company has tested ROL with refractory gold and it has proven possible to apply the technology in the laboratory to significantly improve gold recovery, it said.

“We are currently working with several gold producers in research and development of this process, with the goal of potentially moving on to pilot scale testing in 2019,” the company concluded.

 

FLSmidth to help expand Utkal Alumina International’s refinery

FLSmidth will supply machinery and equipment for the 500,000 t/y extension of Utkal Alumina International’s (UAI) refinery in Odisha, India, it has confirmed.

UAI is a wholly-owned subsidiary of Hindalco Industries, an industry leader in aluminium and copper, and is the flagship metals company of the Aditya Birla Group, the world’s largest aluminium rolling company and one of the biggest producers of primary aluminium.

When finalising the contract during a recent meeting of Hindalco and FLSmidth top management, Rakesh Mohan, Vertical Head Projects, MCoE, Hindalco, Mumbai, said he was very pleased and proud to be continuing Hindalco’s partnership with FLSmidth and with the decision to choose FLSmidth for all the critical parts of the project.

Anders Bech, Regional President for FLSmidth, said: “Hindalco is a global major in the field of aluminium with world-class operating facilities. We are therefore very proud to continue partnering with Hindalco in their expansion programme in which safety and productivity are key.

“Because we cover the entire flowsheet of mining and minerals processing, we can provide a strong solution that gives our customers the best return on their investment when looking at the total cost of ownership. All of this with a minimal impact on the environment.”

The scope of this contract includes bauxite grinding, handling, mud washing, hydrate filtration and gas suspension calcination packages on an engineering, procurement and construction basis (excluding civil works). Design, engineering, manufacturing, supply and erection of these units will be carried out by FLSmidth.

The project is to be completed by the June quarter of 2020 and, once operational, this plant will augment the alumina capacity by 500,000 t/y.

FLSmidth said: “FLSmidth’s state of the art products will reduce the energy consumption, minimise the environmental impact, thanks to greater caustic recovery, and will also reduce planned and unplanned equipment downtime by predictive and prescriptive maintenance.”

Utkal comprises a 1.5 Mt/y refinery, bauxite mines with reserves lasting for over 25 years and a captive co-generation power plant of 90 MW.

Mine development ahead of schedule at Lundin Gold’s Fruta del Norte project

Lundin Gold has reached the orebody at its Fruta del Norte project in Ecuador, with mine development tracking ahead of schedule.

The Toronto and Stockholm-listed company said it has completed 4.5 km of underground mine development so far, with level development having now commenced.

In the construction update on the 3,500 t/d underground project, the company said overall engineering was 85% complete, with project construction at 45% completion.

Ron Hochstein, Lundin Gold’s President and CEO, said: “Our team has reached and, in some cases, exceeded the project’s targets, all while maintaining excellent safety standards. With 70% of our capital expenditure committed and detailed engineering nearly done, Fruta del Norte is on schedule to meet its target of producing first gold in the fourth (December) quarter of this year.”

Lundin Gold said the majority of large process plant mechanical equipment was now on site, while 22% of powerline infrastructure was finished. The company noted it had clocked up more than 3 million manhours without a lost time incident.

Development

Lundin Gold reported that the K’isa decline was completed on December 9, 2018, after 2.1 km of total development, and transitioned to production level 1170. Production level 1195 began on December 7, 2018 and a total of 330 m of level development on two levels has been completed. December average advance rates in K’isa were 9 m/d, versus a target of 7.1 m/d.

“The Kuri decline is at 2.07 km of total development and is progressing towards lower production levels in the mine. This decline was completed this month. December average advance rates in Kuri were 5 m/d, versus a target of 4.2 m/d,” Lundin said.

“Overall, advance rates in both declines exceeded the plan by 11% due to better than expected ground conditions and lower than anticipated water inflows.”

Lundin Gold said it is preparing the first stages of transition to owner operations and its mining fleet, which includes Epiroc drills and bolters and Cat scooptrams and trucks, has started to arrive at Fruta del Norte.

Process plant

Process plant concrete foundations (pictured) are 62% complete and structural steel erection is progressing as planned, the company said. The remaining mechanical equipment is expected to be on site this quarter and installation of the carbon-in-leach (CIL) circuit and grinding mills has started. Commissioning of the process plant is still on track to begin in September quarter of this year.

In October 2017, Lundin Gold awarded the long-lead time grinding equipment packages, including the SAG and ball mills (complete with motors) and the flotation and filtration packages to Outotec Chile SA. The gravity mill, CIL and detox tanks, and ADR plant and gold room packages were awarded to FLSmidth USA Inc. TelSmith will provide the crushing packages for both the process plant and aggregate quarry crushers, while ABB has been awarded switchgear and substation equipment and transformers packages.

With process plant engineering substantially complete, engineering efforts are now focused on the paste plant – where concrete works have begun – and water treatment plant facilities, Lundin Gold said.

Tailings

The company successfully negotiated the Mountain Pass Quarry Exploitation Agreement with the local government in the December quarter of 2018, and extraction of aggregate materials began shortly after. Material from the quarry was necessary to move forward with the construction of the tailings storage facility (TSF).

Access roads and the polishing pond were completed in the December quarter, while construction advanced on the surface water perimeter diversion ditches around the TSF.

When fully ramped up, Fruta del Norte is expected to produce 325,000 oz/y of gold at an all-in sustaining cost of $583/oz over a 15-year period.

The fine print in FLSmidth’s REFLUX Classifier technology

FLSmidth has looked to spell out to the mining industry the benefits of its REFLUX™ Classifier (RC™) technology.

The RC is a slurry-based gravity separator designed specifically to upgrade fine minerals generally finer than 2 mm, the company says.

“The key design element is a system of lamella plates or inclined channels and the internal overflow launders. These are contained within the Lamella Settler – the top portion of the RC. The other two main components are an Autogenous Dense Medium Separator underneath the lamella chamber, and a Fluidised Bed Separator beneath that.”

Material from the process plant enters through the slurry inlet and passes over an internal over-size protection screen, removing any tramp or debris that may cause damage to the ceramic underflow valve.

Large, high-density solids quickly sink and settle in the mixing chamber in the middle section of the classifier, forming a fluidised bed of dense material. This bed is created by a series of water jets at the base of the mixing chamber and rejects any trapped lighter particles.

“Lighter and finer particles rise in the RC, through the autogenous zone to the lamella section,” FLSmidth says. “The autogenous section is created by fine suspended solids, and this zone helps convey lighter particles to the lamella section.”

This upper section contains the crucial sloping lamella channels, typically placed 6mm apart – although this distance can be reduced for finer materials. Low density particles rise up through these channels, driven by the upward water flow from the feed. The narrow sloping channels cause a parabolic flow pattern where the flow is fastest midway between the channel walls, the company says.

“The lightest particles are carried by the faster flow before they can settle and they overflow at the top of the channel. They fall into internal launders and are discharged from the RC. The higher density particles tend to slide back along the topside of the lamella channel, where the flow is slower. These particles slide down the slope, back to form the autogenous dense media zone,” FLSmidth says.

Pressure probes monitor the bed density and automatically control the underflow valve to optimise the bed level and density. The fluidised bed keeps particles in suspension and rejects the lighter material up out of the bed, while the denser particles sink and flow out through the underflow valve.

“The valve’s four-link system moves the plug vertically, which reduces wear and provides protection against splashing,” the company says.

In a recent innovation, a modular RC plant, FLSmidth selected the associated equipment – like pumps, screens, dewatering equipment and conveyors – for optimal performance. These modular plants are also automated, using advanced instrumentation and control equipment to keep operations consistent and recoveries high.

HPGR and ore sorting stack up for Vista Gold’s Mt Todd gold project

Toronto and New York-listed Vista Gold reports recent high pressure grinding roll (HPGR) crusher and ore sorting tests on high-grade samples at its Mt Todd gold project, in the Northern Territory of Australia, have confirmed previous test results.

The company has also announced plans to complete fine grinding and leaching tests in the March quarter and to follow these results with updated prefeasibility study (PFS) economics in the June quarter.

Vista said additional HPGR and ore sorting tests were completed on two, 2.5 t samples from Mt Todd’s Batman deposit containing 1.39 g/t and 1.70 g/t gold, respectively. This testing programme confirmed two important results:

  • HPGR crushing, followed by screening, results in increased concentration of gold in the fine fraction, and;
  • The small amount of gold lost in the rejected material is proportionally lower when sorting higher-grade material.

As with previous tests, the samples were HPGR crushed at the facilities of ThyssenKrupp Industries in Germany and screened at 16 mm. The coarse fraction (+16 mm) was sent to the facilities of Tomra Sorting Solutions in Germany, where two-stage (X-ray Transmission and laser) sorting tests were completed using production-sized and commercially available equipment. The following table summarises the results of the testing programme for each of the samples and compares these results to previous bulk tests on low-grade samples:

Sample

(g Au/t)

Sorter Feed (+16mm) Sorter Product Sorter Reject Gold Loss (%)
Fraction of Total Sample (%) Grade

(g Au/t)

Fraction of Total Sample (%) Grade

(g Au/t)

Fraction of Total Sample (%) Grade

(g Au/t)

1.39 17.8% 0.731 9.4% 1.238 8.4% 0.158 1.0%
1.70 18.6% 0.737 10.3% 1.239 8.3% 0.110 0.7%
Previous Results
0.63 17.5% 0.533 10.5% 0.817 7.0% 0.103 1.1%
0.34 17.8% 0.255 11.0% 0.365 6.8% 0.075 1.5%
0.67 18.7% 0.619 11.3% 0.901 7.4% 0.192 2.0%

Frederick Earnest, President and Chief Executive Officer, said the tests confirmed the benefit of ore sorting for Mt Todd and demonstrated lower gold losses with higher grade crusher feed.

“We attribute these results to the favourable characteristics of the Batman deposit. Simply stated, the gold-containing sulphide minerals and quartz/calcite veining are more easily broken into small particles than the non-mineralised host rock,” he said. “Where this breakage does not result in clean separation from the host rock in the first pass of HPGR crushing, the gold-bearing minerals are easily identified and separated in the ore sorting circuit.”

The results complement Vista’s previously announced fine grinding and leaching test results, Earnest said, adding that he expects them to support additional improvements in the economics of the Mt Todd gold project when the PFS is published later this year.

The crushed and sorted samples have been transported to the facilities of Resource Development Inc, where sample preparation has been completed for assaying and additional fine grinding, leaching and tailings characterisation tests.

Samples are being sent to Core Metallurgy Pty to obtain additional fine grinding data simulating grinding in the horizontal IsaMill and to the FLSmidth Minerals Testing and Research Center to obtain data simulating grinding in the vertical VPX Mill.

“Both tests will target a final product size of 38-45 microns and will generate a sufficient volume of material for subsequent leach tests,” the company said, adding the fine grinding and leach tests were expected to be completed in the March quarter, with final results expected in the following quarter.

The company has completed additional tailings characterisation tests and concluded that no material design changes are required to proceed to the economic analysis using a final grind size of 38-45 microns.