TMP FROM DRY, BEETLE KILLED LODGEPOLE PINE CHIPS

摘要

Pilot scale TMP refining of dry black spruce and balsam fir demonstrated the general trend that chip solids contents up to about 77% by themselves should not be detrimental to the pulp properties. At around 90% solids, however, the pulp quality suffered. Beetle killed lodgepole pine harvested at 80% solids content conformed reasonably well to this general trend. The strength properties were recovered to a large degree by rewetting. The residual negative effect was around 2 Nm/g tensile index at CSF =100 mL for black spruce and balsam fir and around 1 Nm/g for the beetle killed lodgepole pine.