Abstract: A method and device for the continuous mixing and removal of pulverous or fragmentary material from a container, such as a silo or the like, so that the various layers of material simultaneously become mixed with each other, in which case material is removed at a level below the feeding level, essentially over the entire silo width, the material being removed so that its sinking rate in the silo increases towards the line between the feeding and the removal points in order to slant the material layers towards the said line so that the material can be removed in a controlled manner from the slanted layers by means of a removal member or members directed across the layers.

Abstract: Disclosed is a roller with an outer mantle and an inner shaft, the middle part outer diameter of the inner shaft being greater than the outer diameter of its other parts and the outer mantle having been joined by shrinking to the middle part of the inner shaft. The outer mantle parts being supported by the greater diameter middle part of the inner shaft and consisting of two pipes welded together, the ends of the mantle have been thinned on the inside so that their inner diameter is the same as the outer diameter of the inner shaft middle part and the combined length of the outer mantle is the same as the length of the middle part of the inner shaft. In addition the middle part of the inner shaft has been fitted so that when said pipes are welded together the middle part is pressed between the shoulders of the thinned parts of the outer mantle.