Method for improving fracture length index of cotton pulp board
A fracture length and index technology, which is applied in pulp beating method, pulp beating/refining method, textile and papermaking, etc., can solve the problems of affecting binding force, large fluctuation of fracture length index, and unstable detection index, etc. Achieve the effect of improving uniformity and increasing production
Inactive Publication Date: 2021-06-04
合肥银山棉麻股份有限公司
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Problems solved by technology
Use the same quality level of three-grade cotton raw materials to produce, because the fiber fineness is different, the number of fibers arranged in the unit area of the produced three-grade cotton pulp is different, which affects the bonding force, causing the fracture length index to fluctuate greatly and the detection index to be unstable.
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[0015] The present invention will be further described below in conjunction with embodiment.
[0016] like figure 1 A method for improving the fracture length index of the cotton pulp board includes the following steps: firstly, the pulp is cut through a beater and a refiner in sequence, and after the fiber is cut in the pulp, it is refined through a refiner, Then enter the desanding process.
[0017] Among them, the beater processes the pulp twice through different currents. The current of 100-120A for the first pass of pulping into the beater lasts for 30 minutes, and the current of 140-150A for the second pass of fiber cutting by the beater for 60 minutes.
[0018] Among them, the refiner processes the pulp twice through different currents. For the first pass of the refiner, the coarse fiber fine pulp current is 300-320A, and the time is 40 minutes; for the second pass of the refiner, the fiber cutting fine pulp current is 330-350A, and the time is 50 minutes.
[0019] ...
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The invention provides a method for improving the fracture length index of a cotton pulp board, which comprises the following steps of: firstly, sequentially performing fiber cutting on pulp through a beater and a refiner, grinding the pulp through a grinder after the fiber cutting on the pulp, and then entering a desanding process, wherein when the pulping machine is used for processing pulp, the pulp is processed for at least two times through different currents. In the production process, the pulping procedure of the pulping machine is added to the pulp obtained after pulping and cutting, the pulping machine is used for enhancing crushing and brooming of the fibers, so that the bonding area and the bonding force between the same number of fibers in the unit area are increased. The fiber form is changed through the interaction of the conical multi-tooth grinding disc of the pulping machine, and the influence of different fiber fineness on the fracture length index of the cotton pulp is reduced. In addition, a pulping process is added after the refined pulping process, so that the influence of non-uniform fiber length on the desanding effect can be reduced, the feeding uniformity of the pulp is improved, and the yield is increased.
Description
technical field [0001] The invention belongs to the technical field of cotton pulp boards, and in particular relates to a method for improving the fracture length index of cotton pulp boards. Background technique [0002] The mint requires the three-level cotton breakage index to reach more than 5,000 meters, which is difficult to achieve with traditional techniques. The main factors affecting the fracture length index are the number of arrangements per unit area and the tightness of fiber bonding. The beating and refining of the traditional production process mainly cut the fibers, and the fiber shape does not change much. The third-grade cotton raw materials of the same quality grade are used for production. Because of the different fiber fineness, the number of fibers arranged in the unit area of the third-grade cotton pulp produced is different, which affects the bonding force and causes large fluctuations in the fracture length index and unstable detection indicators...
Claims
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IPC IPC(8): D21D1/02D21D1/22
CPCD21D1/02D21D1/22
Inventor 苏宁东何模祥刘玉宝
Owner 合肥银山棉麻股份有限公司