| Abstract:The pulp at first stage refining was divided into shives and pulp A with the use of shives screens, the shives were refined to the pulp B with different freeness, then the pulp B was backfilled into pulp A in proportion, the effects of selective refining on the paper properties and energy consumption of refining were analyzed. The results showed that: selective refining could reduce the energy consumption of refining. On basis of the freeness of the resultant pulp was the same as with the self-finished pulp, when the freeness of pulp B reached to 170 mL, the freeness of pulp C is 305 mL, energy consumption of refining decreased by 13.1%, paper bulk and tear index increased by 11.6% and 1.7%, while the tensile strength and internal bonding strength decreased by 10.5% and 16.8%. The selective refining of shives could adjust the paper properties by controlling the shives refining characteristic. |
