Sykes Group and BHP Billiton have designed an efficient and environment friendly water management system for the Mt Arthur Coal operations in the Hunter Valley, NSW.
Sykes Group’s Chris Molloy worked with Mt Arthur Coal environmental manager Ralph Northey on high volume equipment, main pit dewatering and water transfer pumps.
The importance of maintaining regular coverage for dust suppression at Mt Arthur calls for 170,000L water trucks, the largest used anywhere in Australia. These need filling quickly, so two Sykes VP300 Vacuum Prime electric drive pumps, connected in parallel, operate at 960rpm to minimise the fill time to five minutes at 550L/s.
Sykes says this fill point has remote start by radio communications, which allows simple operation while conserving time and resources.
Five Sykes HH200i compressor prime pumps, diesel driven to 2100rpm with 400kW power, transfer mine water to any of the several dams.
Each unit is mounted on a heavy-duty pontoon with sound attenuated canopies to reduce the noise levels to 72dBA at seven metres.
Mt Arthur’s Nigel Ervine and Brian Nowlen say the HH200i’s make dewatering much quicker than previously, and have the capacity to deal with heavy rain.
Sykes HH150 electric drive pumps, with and without compressor priming, complete the system. Located at fill point dams, transfer tanks and storage dams, the pumps transfer water to any part of the site as required.
Nine water transfer units are used to balance the system, each with soft starters and telemetry to automatically transfer water on demand based on levels at the different locations. The versatility of the HH150 has allowed one model to cover all the varying duties.
More info: (02) 9894 4532