PRODUCTION METHOD OF WOOD GRANULAE (PELLETS) Russian patent published in 2009 - IPC C10L5/44 B27M1/02 

FIELD: wood processing.

SUBSTANCE: production method of wood granulae is based on use of furnace dead matter from low-grade wood as raw materials. The method involves pushing raw materials through an extrusion-type, perforated matrix in form of a plate with three-step shaped openings, in which there is division of raw materials into different parts, compaction and shaping of material in form of wood pellets. Whole timber is used as raw material, extruded under pressure of a hydraulic press. The openings of the plate are at peaks of regular triangles. Division of wood takes place at different hexagons using a system of parabolic teeth, the peaks of which at the corners of hexagons on the working surface of the matrix. The wood is compacted in conical channels with taper angle of 20°, shaping - by pushing wood through cylindrical openings.

EFFECT: method of making wood granulae (pellets) allows for doing away with laborious and expensive operations for preparation, chopping and drying raw materials, which significantly lowers production costs.

3 dwg