B - Operations – Transporting – 27 – L
Patent
B - Operations, Transporting
27
L
B27L 1/04 (2006.01) B27L 1/02 (2006.01)
Patent
CA 2506811
A method for optimizing the debarking result of logs debarked in a debarking drum, especially logs of mutually approximately the same size and of the same wood species, in such a way that wood losses remain as small as possible at the same time as the control values of the debarking drum are selected to be such that the debarking degree of the logs debarked in the debarking drum is of the desired order. The amount of bark remaining on the logs in the log flow discharged from the debarking drum and the amount of damaged logs in the said log flow are measured. At the same time as the amount of bark remaining on the logs is maintained at a desired level, the amount of damaged logs is kept as low as possible in such a way that the filling degree of the debarking drum is lowered whenever the amount of damaged logs is observed to increase.
La présente invention concerne un procédé permettant d'optimiser l'écorçage des grumes dans une écorceuse à tambour, et plus particulièrement de grumes de dimensions sensiblement identiques et de même essence. Ce procédé vise à minimiser les pertes de bois par une sélection des paramètres de fonctionnement de l'écorceuse à tambour faisant que le degré d'écorçage des grumes reste dans les limites acceptables. La quantité d'écorce demeurant sur les grumes débitées par l'écorceuse ainsi que la quantité de grumes endommagées parmi les grumes débitées font l'objet de mesures. Non seulement la quantité d'écorce demeurant sur les grumes se maintient à un niveau acceptable, mais la proportion de grumes endommagées reste aussi basse que possible de façon que le niveau de remplissage du tambour d'écorçage puisse baisser dès qu'on constate une augmentation de la proportion de grumes endommagées.
Andritz Oy
Battison Williams Dupuis
LandOfFree
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