Impact pulverizer SF series

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• Fine grinding of non abrasive materials The SF mills are suitable to pulverize gypsum, calcium carbonate, some types of clays, pure kaolin, etc. The high fineness obtainable with these mills makes them suitable for producing directly the required powders in the fineness range 98÷99% minus 40 micron and/or 90÷98% minus 20 micron, or to feed micro-classifiers to produce powders minus 5÷20 micron. The SF Mills can be fed with granulated materials or powders up to 2÷10 mm; however the SF mills can refine efficiently even materials with feed size minus 1 mm. • Production of coated calcium carbonate As special application we mention the post treatment for the production of coated calcium carbonate with stearic acid. • Micronizing of coarse cereals/wood flour SF mills are suitable for fine grinding of cereals minus 300 microns and, particularly, for the post treatment of the coarsest fraction coming from sieves. • Micronizing of plastic materials and elastomers The SF mills are suitable for grinding polyethylene, PVC, polystyrene, rubber, polyurethane, etc. For these applications the shear action is essential. Cooling of grinding room is necessary in certain cases. • Other applications : • chemicals • guar splits • metal oxides • pesticides • various industrial waste for separation of different components for instance copper and PVC from electric wires These kind of micronizers show a high efficient grinding effect based on a combined impact and shear action due to: • High peripheral speed • Large grinding surface with small gap between rotor and armours • Special multistage rotor with blades • Housing in welded steel plates with inspection doors