Natural color chemimechanical pulp high-looseness white board paper and production technology
A technology for chemical-mechanical pulp and whiteboard paper, applied in the field of papermaking, can solve the problems of increasing the COD content of the chemical-mechanical pulp external drainage system, reducing the advantages of the bulk of the chemical-mechanical pulp, and using a large amount of bleaching chemicals, so as to ensure the strength and retain the looseness. Thickness, the effect of improving yield
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Embodiment 1
[0021] Example 1: Production technology of the originalized machine pulp white plate, including the following steps:
[0022] S1: The core layer pulp, washed the raw material wood chip in the wood pieter, and then prepared by the vertical immersion, preprocessing the liquid base by ton weight 5 kg, preprocessing, preprocessing High concentrate grinding, low concentrated grinding, finally entered the mulch tower after the multi-disc wash, then inject the urinal pulp into the core layer pond; paper edges generated by the turbine process, damage to the grinder Grinding, the obtained slurry is injected into the core layer pond, and the core layer flow bumper is influenced.
[0023] S2: Face / underlying pulp, bleached needle slurry (NBKP) plate and bleached broadlet wood pulp (LBKP) plates are pulp, amused, milling, and then add bleached broadlet wood pulp to the surface layer / The underlayer pool, the weight of the bleached waters is 100%, and the slurry is subjected to a surface / ...
Embodiment 2
[0026] Example 2: Production technology of the high-quality machine pulp white plate, including the following steps:
[0027] S1: The core layer pulp is washed in a wooden scrubber, and then preprocessing the liquid base by toning 28 kg by tonition by vertical immersion. High concentrated grinding, then entering the bleaching tower bleaching, bleaching chemicals in the bleaching column include 10 kg of liquid base, 25 kg of oxygen water, 10 kg of sodium silicate, 5.0 kg of bleaching control agent and 2 kg of chelating agent, and low Concentrated grinding, after the multi-plate screening, after the washing is washed, then the localized machine paste is injected into the core layer pond; the paper side generated by the turbine process, the loss of damage enters the grinder, the obtained slurry injection The core layer is inserted into the core layer of the core layer.
[0028] S2: Face / underlayer pulp, bleached needle pulp (NBKP) plate and bleached wander pulp (LBKP) plates are pu...
Embodiment 3
[0032] Example 3: Production technology of the originalized machine pulp white plate, including the following steps:
[0033] S1: The core layer pulp is washed in a wooden scrubber, and then preprocessing the liquid base by toning 28 kg by tonition by vertical immersion. High concentrated grinding, then entering the bleaching tower bleaching, bleaching chemicals in the bleaching column include 10 kg of liquid base, 25 kg of oxygen water, 10 kg of sodium silicate, 5.0 kg of bleaching control agent and 2 kg of chelating agent, and low Concentrated grinding, after the multi-plate screening, after the washing is washed, then the localized machine paste is injected into the core layer pond; the paper side generated by the turbine process, the loss of damage enters the grinder, the obtained slurry injection The core layer is inserted into the core layer of the core layer.
[0034] S2: Facial pulp, the bleached needle slurry (NBKP) plate and the bleached broadlet wood pulp (LBKP) plates ...
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