中文摘要：

利用纤维束筛将一段高浓磨后的半成品化机浆筛分为纤维束和浆A,将纤维束利用PFI磨至不同的游离度回添至浆A,制备化机浆实施化机浆的选择性磨浆。本文研究了这种选择性磨浆对杨木PRC-APMP成纸性能及能耗的影响,结果表明：当纤维束磨浆转数为19 000 r时,二段磨浆能耗降低11.8%,成纸松厚度提高10.8%,但抗张指数下降了10.5%,撕裂指数降低6.1%,内结合强度降低6.8%。

英文摘要：

The pulp at first stage refining are divided into shives and pulp A with the use of shives screens, the shives are refined to different freeness by PFI, then backfill the pulp B into pulp A in proportion, the effects of selective refining on the paper properties and energy of refining were analyzed. The results showed that： when the shives are grounded to 19 000 r, energy of refining decreased by 11.8%, paper bulk increased by 10.8%, while the tensile intensity, tear index and internal bonding strength decreased by 10.5%, 6.1% and 6.8%.