13. October 2019 Köllemann Self Cleaning System Share EmailTwitterFacebookGoogle +PinterestTumblrLinkedinVkontakte Are you aware that Köllemann designed a self cleaning system that … … allows a heat transfer of sticky bulk material and pasty media without problems? Self cleaning system 10. February 2021 Köllemann process technology, Köllemann Self Cleaning system, Rotary Valves, Srew conveyors