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The Pachuka Valve (Multi Aerator manufactured by Multotec SA) has substantial advantages over existing designs used for air agitation in Pachuka or leaching tanks. Using the valve results in better air utilization in the leaching process and longer operating life through the use of wear resistant materials. The valve has the ability to open after long settling periods, obviating the need to empty the tank after each power failure.
For mechanically agitated tanks, the Pachuka Valve can also be used to start tank agitation, eliminating damages to the mechanical mixers installed. Should the current mechanical mixers not be sufficient, the Pachuka Valve can be used concurrently with the mixers to ensure efficient agitation of the tanks.
Air consumption is substantially lower with this valve than with previously used system, which results in large savings on air, as well as meeting the mine’s objective of reducing operating, maintenance, labour costs and downtime in the long run.