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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%。
The use of fiber beam sieve to a high concentration of semi-finished pulp mill after the screening is divided into fiber bundles and pulp A, the fiber bundle PFI mill with different degrees of freedom back to the slurry A, the preparation of organic pulp slurry Selective refining. In this paper, the effect of selective demineralisation on the properties and energy consumption of poplar PRC-APMP was studied. The results show that the energy consumption of the second stage refining is reduced by 11.8% when the rotational speed of the fiber bundle is 19 000 r, The paper bulkiness increased by 10.8%, but the tensile index decreased by 10.5%, the tear index decreased by 6.1% and the internal bond strength decreased by 6.8%.