Pulp-grinding method for improving fibre brooming and application thereof in papermaking
A refining and fiber technology, which is applied in chemical instruments and methods, pulp beating/refining methods, papermaking, etc., can solve the problems of difficulty in improving fiber splitting and brooming, and achieve the improvement of brooming effect and fiber strength. The effect of promoting broom
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Embodiment 1
[0016] Prepare two identical slurry samples, and the hard grinding aid is PCC. The first part does not add Filler for refining, and the second part adds PCC in a certain proportion before refining, and then mixes with the fibers in the pulp sample and then refines; the two pulp samples after refining are made under the same conditions Manufactured slices were tested for their physical properties. The results are shown in the table below:
[0017] Table I
[0018] Test items
[0019] After PCC refining, the strength of the pulp has been significantly improved: the rupture index increased by 19.8%; the cohesion increased by 23.75%
Embodiment 2
[0021] On-site paper machine pilot test, hard grinding aid is PCC. Before the slurry enters the disc refiner, PCC is mixed with the slurry in a certain proportion, and then mixed and ground together, and the physical properties of the paper before and after adding Filler are compared. The data are as follows:
[0022] Table II
[0023] Test items
[0024] Test items
Embodiment 3
[0026] Concrete experimental procedure is the same as embodiment 1, and hard grinding aid is glass fiber. Using glass fiber instead of PCC and fiber for mixing and refining, the physical properties of the two pulp samples are compared in the following table:
[0027] Table three
[0028] Test items
[0029] After the glass fiber is mixed and refined, the strength of the slurry is significantly improved: the tensile strength increases by 12.2%; the cohesion increases by 17.26%
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