Underground Energy Saving Solutions
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Hydro Power Drilling
Energy Efficient Drilling (Hand held)
Water operated hand held rock drilling is an efficient and effective way of mining compared to air, electric or oil hydraulic powered equivalent machinery in terms of ton of water / ton of rock and kWh/m drilled.
Rock drills are either used with its own pump set (AquaPack) which is in close proximity to where the drilling is taking place (typically within 20 m) or powered by a remote located pump set (centralized pumping station) which typically feeds 10 rock drills off 1 power pack.
In both cases, water is recirculated i.e. closed loop system other than the flushing water which is approximately 20% of the water used of powering the rock drill. This is done by using our latest technology in PLCs/variable speed drives/mechanical unloading systems/permanent magnet motors or a combination of some or all of the above.
The HPE rock drill returns water back to the pump at max 20 bar, thereby allowing water to be “pushed” back into the pump suction line.
AquaPack type drilling layout
Remote positioned pump set and return water tank type drilling layout
Energy recovery –
3 Chamber Pump System (3CPS)
The purpose of a 3 Chamber Pump System, 3CPS, (also known as the 3 Chamber Pipe Feeder System) is to recover the gravitational potential or pressure energy of the water entering a mine and use it to pump water out of the mine. Unlike a Pelton wheel turbine energy recovery device, the 3CPS also pumps the water out of the mine allowing the conventional de-watering pumps to be switched off for most of the time. This translates into significant energy and maintenance savings.
Cooling Car Valve
The Cooling Car Valve System ensures a constant flow through a cooling car irrespective of the flow demand from downstream operations. The valve saves water and energy by only dumping water to drain when the demand from operations is less than the cooling car flow required. If the demand from operations is more than the cooling car flow requirement, the water will be directed back into the service water line.