LKAB has awarded ABB a contract to put in two ABB Gearless Conveyor Drives (GCDs) on the present conveyor belt system at its Malmberget mine close to Gällivare, Norrbotten County, Lapland, essentially the most northern province in Sweden.
The prevailing setup already carries as much as 15 million tons of iron ore yearly, utilizing a 2,800kW wound rotor induction motor (WRIM) with gearbox to drive the conveyor. It will likely be changed with ABB’s newest GCD expertise, two 1,600kW fashions with everlasting magnet motors (PMM), to allow a rise in annual manufacturing whereas decreasing power consumption per ton.
ABB’s set up engineers and venture administration workforce face the problem of working in a decent area at round 1,250 meters underground to take away the big tools and exchange it with the brand new items. As soon as the improve is full in 2025, LKAB will be capable of obtain total power financial savings of between 6 and 10 %, which is able to translate to appreciable OPEX financial savings per yr.
ABB GCDs have a motor energy of between 0.2MW and 8MW, eradicating the necessity for a gearbox and thereby reducing upkeep prices whereas bettering total reliability and resulting in larger uptime. A singular ABB innovation, they’re recognized to be essentially the most energy-efficient conveyor drive answer.
“We’re managing the biggest iron ore mines in Europe the place productiveness should stay excessive whereas power effectivity will increase,” mentioned Pär Sundqvist, Engineer and Undertaking Proprietor, LKAB. “This necessary improve will enhance the throughput on the conveyor and assist us to satisfy our power targets. ABB’s expertise will even scale back each OPEX per ton and ongoing lifecycle prices.”
“The brand new ABB tools will permit for an improved working surroundings within the mine – cleaner and safer,” mentioned Ulf Richter, Product Supervisor Conveyor Options, ABB. “Gearless Conveyor Drives are recognized to be essentially the most energy-efficient answer for conveyors, enabling dependable transportation of ore. The improve additionally means lowered noise and warmth within the conveyor drive space.”
The GCD’s PMM are immediately coupled to the present conveyor’s drive pulley and may also tailored to satisfy the actual calls for of this underground set up. The principle benefits are power financial savings, well being and security enhancements, lowered upkeep prices and regular, strong manufacturing as a consequence of increased reliability.
ABB was awarded the venture contract within the third quarter of 2023 and the set up will happen throughout scheduled upkeep stops with the ultimate commissioning due in August 2025.