Oxygen consumption reduced

摘要

Anew optimised jet aeration nozzle is being touted as offering significantly creased efficiencies throughput in-process applications for the mass transfer of gas-to-liquids and sparging operations. Developed by CSIRO Fluids Engineering Laboratory in Melbourne and licensed commercially to Chemical Plant & Engineering Pty Ltd, the GL (gas/liquid) Nozzle has just undergone an in-plant trial conducted over an eight month period at the Stawell gold mine in Victoria. The trial was conducted with the aim of reducing oxygen consumption where oxygen is introduced by sparging into a gold recovery circuit using a bi-cone and oxygen ring system. In the past this has been considered inefficient in delivering enough oxygen into high consuming gold ores. There were also significant maintenance and cleaning costs associated with the bi-cone and oxygen ring system. The trial at Stawell confirmed a worthwhile saving in oxygen usage which was enhanced by the limited maintenance requirements for the GL Nozzle, delivering significant economic benefits in its favour.