Preparation method of environment-friendly cultural writing paper
A technology of writing paper and culture, which is applied in the field of preparation of environmentally friendly cultural writing paper, can solve the problems of cultural writing paper that is easy to mold, low raw material utilization rate, unfavorable environmental protection, etc. The effect of wood consumption reduction
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Embodiment 1
[0017] 1) Cutting, crushing, and transporting office waste paper to the pre-pregrasser for soaking, dehydration by screw extrusion, and coarse grinding by the coarse mill to form waste paper pulp, which is transported to the high-consistency pulp storage tower, and then to the high-consistency storage pulp Bleached chemical pulp is added to the tower, and the weight ratio of bleached chemical pulp and waste paper pulp in the high-consistency storage tower is 5:1; the bleached chemical pulp and waste paper pulp in the high-consistency storage tower are transported to the hydropulper, and then sequentially After high-concentration desander, coarse screen, heavy desander, fine screen, multiple disc thickener, heat dispersion system, disc mill, and slurry tank; among them, the sieve plate aperture of the hydraulic pulper is 13mm, and the beating concentration is 4.1 ~4.5%, and the pulping degree is 36~42°SR.
[0018] 2) Add calcium carbonate and polyacrylamide to the pulp tank, th...
Embodiment 2
[0022] 1) Cutting, crushing, and transporting office waste paper to the pre-pregrasser for soaking, dehydration by screw extrusion, and coarse grinding by the coarse mill to form waste paper pulp, which is transported to the high-consistency pulp storage tower, and then to the high-consistency storage pulp Bleached chemical pulp is added to the tower, and the weight ratio of bleached chemical pulp and waste paper pulp in the high-consistency storage tower is 22:5; the bleached chemical pulp and waste paper pulp in the high-consistency storage tower are transported to the hydropulper, and then sequentially After high-concentration desander, coarse screen, heavy desander, fine screen, multiple disc thickener, heat dispersion system, disc mill, and slurry tank; among them, the sieve plate aperture of the hydraulic pulper is 15mm, and the beating concentration is 4.1 ~4.5%, and the pulping degree is 36~42°SR.
[0023] 2) Add calcium carbonate and polyacrylamide to the pulp tank, t...
Embodiment 3
[0027] 1) Cutting, crushing, and transporting office waste paper to the pre-pregrasser for soaking, dehydration by screw extrusion, and coarse grinding by the coarse mill to form waste paper pulp, which is transported to the high-consistency pulp storage tower, and then to the high-consistency storage pulp Bleached chemical pulp is added to the tower, and the weight ratio of bleached chemical pulp and waste paper pulp in the high-consistency storage tower is 4:1; the bleached chemical pulp and waste paper pulp in the high-consistency storage tower are transported to the hydropulper, and then sequentially After a high-concentration desander, a coarse screen, a heavy desander, a fine screen, a multiple disc thickener, a heat dispersion system, a disc mill, and a slurry tank; among them, the sieve plate aperture of the hydraulic pulper is 16mm, and the beating concentration is 4.1 ~4.5%, and the pulping degree is 36~42°SR.
[0028] 2) Add calcium carbonate and polyacrylamide to t...
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