Production of Soft Ultrafine Functional Mineral Fillers with Super-Size Air Classifiers

Abstract

Natural minerals like limestone and talc are used as fillers in plastics and paints. These fillers trends in being more and more a functional part of the final product. The functionality of the fillers is mainly influenced from the particle size distribution. The finer the filler obviously the bigger the specific surface will be. With the classification technology state of the art new requir-ements cannot be reached. Therefore Messrs HOSOKAWA ALPINE developed a new classifier type realising the forced fortex. In addition with the production of PCC also much finer grades down to 50%<0.05 micron. We accept this challenge to achieve and even exceed the new requirements. Moreover there shall be found economical solutions to raise the profit.