Large Top Entry Mixers
As the processing demands of industry are increasing, the requirement for large Top entry agitators is becoming the norm, rather than the unusual. This is particularly true in the Minerals Processing industry. Recent applications require the installation of agitators with 18m long overhung, unsupported shafts , impellers in excess of 6,5 m diameter, and drives exceeding 300kW. For these agitators, reliable mechanical design is the driving requirement. Designing agitators of this size requires an accurate prediction of peak and fluctuating forces operating on the impeller system, the design limitations of the gearboxes, and the strength of the in-tank components. AFROMIX make extensive use of Finite Element Analysis (F.E.A) to analyze these loads and forces and their effect on the size and reliability of the designs. AFROMIX use FEA during the design stage, believing that this sophisticated technique should be used to predict problems before they occur – not used to solve problems afterwards.