Turboplex multi-wheel classifier with numerous design improvements

At POWTECH 2010 Hosokawa Alpine presented a Turboplex 315/6 ATP-NG multi-wheel classifier (Fig.) with numerous design improvements. Over and above this, and dependent on the application, a total of six different classifying wheel designs are shown which are suitable for both standard applications with the patented ATP-NG classifying wheel or also for hard materials such as zircon sand (Al₂O₃ monobloc ceramic wheel). Turbo­plex air classifiers are employed for the ultra-fine classification of mineral fillers such as limestone or calcite, dolomite, talc, baryte and perlite, and in the ceramics industry for the classification of quartz, feldspar and kaolin. The result are superfine powders in the range d₉₇ < 2-20 µm. The classifier operates across the entire separation range without oversize particles and ensures a high yield thanks to the integrated coarse material classifier. With Turboplex multi-wheel classifiers, several horizontally arranged classifying wheels of the same diameter are driven separately. The common speed control is achieved via an adjustable static frequency converter. What‘s new is that the maximum classifying wheel speed has been increased by another 10  %. Classifying wheel removal is now facilitated with a new articulated arm which saves assembly time during maintenance. The classifier head has also been optimised with regard to noise and vibrations and is characterised by its outstanding smoothness of running. The new and streamlined design saves on overall height. Product feed is either from the side by gravity with an air seal or direct, i.e. entrained in the flow of classifying air.