Abstract: The residual material in a filter-dryer (1) is removed from the screen (15) by careful scraping with a lasso like belt (20). The scraped material will be removed through a side opening (16). To gain this remaining material adds to the yield of the process by reducing loss of product, and does not endanger personnel unnecessarily and therefore save process costs.

Abstract: The residual material in a filter-dryer (1) is removed from the screen (15) by careful scraping with a lasso like belt (20). The scraped material will be removed through a side opening (16). To gain this remaining material adds to the yield of the process by reducing loss of product, and does not endanger personnel unnecessarily and therefore save process costs.

Abstract: The apparatus comprises a container which essentially has the shape of a body of revolution and comprises two half-shells detachable from one another and having a vertical axis. The container preferably has the shape of a sphere with a material inlet arranged in the upper half-shell and a material outlet arranged in the bottom of the lower half-shell. Also arranged in the container is a stirrer which is rotatable about an axis inclined not more than 20° and which is connected to a drive device arranged on the upper half-shell and picks up and constantly circulates the entire material during operation of the apparatus. The apparatus is suitable as a dryer, mixer and, with introduction of a suitable liquid, also as a granulator and can be used not only for chemical synthesis but also as a reactor, for example in the pharmaceutical manufacturing stage, in combined applications.