Kelvin Power Station
An 80 t/hr counter-rotating twin-shaft ash conditioner and four dense-phase pneumatic conveying systems, enabling dust-free reclamation of decades of stored fly ash.
Kelvin Power Station was built in the 1960s and had been storing fly ash on its ash dam since that time, with storage capacity reaching its maximum. A demand had emerged for the ash as a binding agent for toxic waste at the Holfontein waste site near Delmas — but transporting dry ash in open trucks was a problem.
Fumex Engineering was approached to come up with a solution. We designed an 80 t/hr counter-rotating twin-shaft mixer comprising 64 blades, with a high-pressure spray water system to condition the ash. The system adds approximately 10% moisture, enabling dust-free loading and unloading, and presently provides 20 to 30 truck loads per day to the Holfontein waste dump site.
We also supplied four automated dense-phase pneumatic conveying systems that convey ash from the bag filters to the silo tops.