Pump Systems Ltd

Pump Systems Ltd

ROTAMIX – Process Mixing Systems


Rotamix by Vaughan Company, Inc. is today’s most cost effective means of mechanical mixing available for digesters, sludge storage tanks and other high-volume applications. Combining both principles of uniform and vortical rotation, the unique “dual rotational zone” mixing pattern created by Rotamix eliminates dead spots, reduces energy consumption and prevents against the formation of scum mats and solids build up.

The Rotamix system comprises of fixed nozzle assemblies that are mounted inside the tank to factory specified angles and are permanently tightened. No additional adjustment is needed. There are no moving or rotating parts within the process and no scheduled nozzle assembly maintenance is required. Each nozzle mixing assembly comes with a 10-year full replacement warranty for wear and corrosion.

At the heart of the Rotamix system is an externally mounted Vaughan mixing chopper pump, which recirculates and preconditions the contents of the tank. The Vaughan chopper pump will handle solids laden material and sludge containing rags, fibres and hair. This virtually eliminates problems with fibrous material and other debris reweaving into clumps, while ensuring the pump and nozzles remain clog-free.

Capacity Range: For mixing circular, rectangular and oval tanks and digesters up to 30 metres in diameter, as well as other unique process configurations such as egg-shaped digesters and CSO tunnels.

Materials: Rotamix nozzles are constructed in ductile cast iron and glass lined for abrasion resistance and reduced friction. Vaughan mixing chopper pump wear parts are heat treated to 60+ Rockwell C hardness to extend pump life. A range of stainless steel options are also available.

Applications: Mixing of anaerobic digesters, aerobic digesters with aeration, egg-shaped digesters, sludge storage tanks, sludge blending tanks, equalisation tanks, secondary digesters, lime slurry storage tanks, industrial waste storage tanks, chemical tanks, pulp and paper black liquor tanks, liquid fertiliser tanks, refinery waste containment tanks, recycled food waste digesters and solids suspension tanks.

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