Valmet Technologies Oy

Tuomas Himanka

Håkan Sjöström

A blade element () for a comminution device () to comminute fiber material has at least one comminution section () with comminution parts () and free spaces () therebetween, and at least one feed section () extending at least partly in a longitudinal direction (X) of the blade element (), each feed section () intended to feed fiber material to the respective comminution section (). The comminution parts have a first dimension (d, d, d, d, d, d) extending in a circumferential direction (C) of the blade element and a second dimension (e, e, e, e, e, e) extending in the longitudinal direction (X) of the blade element. At the same longitudinal (X) position in the blade element () the first dimension of the comminution parts is arranged to increase in the circumferential direction (C) of the blade element toward the feed section.

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Valkeakoski, Finland

Tuomas Himanka