MechChem Africa

eDART dual valves and poppet samplers continue to offer exceptional level control at Northam’s Booysendal plant near Lydenburg, Mpumalanga.

eDarteDART’s dart valves at Booysendal offer the best level control they have yet experienced on the plant.

eDART Slurry Valves director, Richard Rule says: “When Booysendal was originally built in 2010, we supplied dual dart valves and poppet samplers, and we continue to be involved in the commissioning and after-sales support to Booysendal, which has sourced additional samplers from us over the years. Our dart valves have kept the level error to less than 2.5% over an eight-hour period at this plant. This is a great and important achievement as level control is vital to maintaining the required ‘grade’ of the concentrate”.

“External dart valves were initially chosen for flotation level control to concentrate the metal from ore, and they currently have 27 flotation machines each fitted with a dual dart valve. It can be argued that this is the most important valve on a concentrator as it is the last controlling element that determines if the metal reports to the concentrator or is lost to the tails”.

“Booysendal have commented that our dart valves offer the best level control they have experienced on a plant,” notes Rule. “We do not just sell our product and walk away. We offer a considered assessment of valve requirements to our customers and, throughout the first year of operation after our original installation at Booysendal, we assisted in the optimisation and fine tuning of the plant to ensure that the best possible performance was obtained from our valves.”

Together with Afrivalve, part of the eDART Group, eDART was responsible for servicing and maintenance of equipment at the Booysendal plant, which included all the calibration and servicing of their valves to maintain optimised operational efficiency. Other control loop elements also had to be correctly selected, calibrated and tuned so as to ensure peak plant performance.

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