BATTERY POWER UNDERGROUND system provides production data and online trouble shooting. The Scooptram ST7 battery is automation ready meaning it can be equipped with smart functions like the option teleremote control that allows control of multiple loaders from a safe remote location.
“ The new Scooptram ST7 Battery shares most parts with the successful diesel Scooptram of which hundreds have been sold-to-date around the globe. Service and repair are therefore no problem, even in the most remote locations.”
Some months ago, Andreas Nordbrandt, President of Atlas Copco Underground Rock Excavation Division stated:“ Our customers’ future is electric.” Atlas Copco will continue to support all customers who rely on diesel-driven equipment but the decision to completely advance beyond diesel is a definitive move.“ It ' s high time to look forward and leave fossil fuels behind,” said Nordbrandt.“ We must consider the mining industry ' s carbon footprint and assume our responsibility as an industry leader”.
“ Zero emission machines already offer the same or even better performance as diesel, and this is only the beginning, productivity and profitability will only improve from here,” says Svedlund.
“ Electric and battery-powered vehicles is the future in underground mining,” declares Nordbrandt. " Besides the lower running cost of the machines themselves, there are considerable savings to be had in ventilation and cooling. But most importantly, electric machines contribute to a safer and healthier work environment for miners everywhere”.
Sandvik LTO battery technology
Sandvik introduced three new battery powered underground mining machines in 2016 at MINExpo- a battery-powered LHD, the Sandvik LH307B, with new technology for emission-free underground loading and hauling; a battery
powered drill jumbo, the DD 422iE and a battery powered dozer, the Sandvik LZ101LE.
The LH307B’ s payload of 6.7 t is moved using components that are shared with the diesel Sandvik LH307, with much the same performance characteristics. Using the charging station’ s“ quick charge,” the Sandvik LH307B can be ready for use in some 15 minutes. The LH307B is also compatible with Sandvik mine automation and information management systems. Its lithium titanate oxide( LTO) battery technology enables rapid recharging, providing continuous operation with a single battery pack – there is no need to swap batteries during or between shifts. Liquid cooling guarantees a long battery lifetime across a broad range of ambient temperatures – in fact, sufficient to cover the useful service life of the loader itself. The single-battery strategy offers several tangible benefits: eliminating the need for spare batteries and / or a dedicated crane and battery swap area effectively cuts capex costs.
The Sandvik DD422iE embodies all the advantages of battery powered units, reducing dramatically the potential health impacts of diesel particulate matter( DPM) and other underground engine emissions that also often dictate high mine ventilation costs. This Is one of the industry’ s first highly automatic development jumbos with an electric driveline system. It uses electric battery power instead of a diesel engine to eliminate emissions during tramming. It consumes no fuel and generates less heat and noise than conventional drivelines.
The DD422iE is enabled and ready for the digitalised era of underground mining. Optional Gold and Platinum automation packages include iSURE drill planning, analyses and optimisation tool. This will help the planning team to find an optimum pattern for the drilled holes resulting less over break and better pull out per each blast. Also a wide range of drilling data are collected including numerous productivity and MWD related information and this can be visualised and analysed round after round as development advances. The DD422iE is also built to compliancy with Sandvik AutoMine Drilling, OptiMine remote monitoring and Fleet data management systems
The LTO battery offers: n High energy density(+ 177 Wh / kg) n 15,000 to 20,000 life cycles n Deep consistent power cycle n Quick charge – nominal 2 hours operating on 15 minute charge cycle with external battery cooling( no battery swap needed). n Can be topped, re-charged when not fully discharged, without damage to the battery The Sandvik LH307B is available with a service pack designed to keep the loader productive 365 days a year. The service pack includes maintenance kits for each and every service interval, together with planned repairs of major components over the equipment’ s life. These repairs will be planned in line with actual component condition, giving consideration to the mine’ s production schedule and minimising downtime.
The fully battery-powered dozer Sandvik LZ101LE will improve the underground working
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0861BOOYCO( 0861 266926) + 27( 0) 11 823 6842 ����������������������������� www. booyco-electronics. co. za
FEBRUARY 2018 | International Mining 25