Thermal modification of the oak wood causes changes of the characteristics of wastes resulted from wood processing. The waste particles of thermally modified oak wood are characterised by a higher degree of crumbling and clearly different shape. It influences, first of all increasing of the main bulk characteristics of the wastes - bulk density and tapped bulk density. Slight differences in the scope of the angle of repose, the sliding angle of repose and the entrainment velocity of particles including in the same fractions appeared. The exact knowledge of the range of characteristics changes of the wastes resulted from the thermally modified oak wood in the relation to wastes from natural oak wood makes possible the introduction of suitable corrections by establishing the design data for pneumatic conveyors and dedusting devices of woodworking machines applied in the processing of the thermally modified oak wood.
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