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Bamboo pulp refining process

A technology for refining and bamboo pulp, which is applied in pulp beating/refining methods, textiles and papermaking, fiber raw material processing, etc., and can solve problems such as difficulty in filtering bamboo pulp

Inactive Publication Date: 2011-12-28
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a kind of can solve the problem that bamboo pulp is more difficult to filter water in the papermaking process, make bamboo pulp after pulping, easy to filter water, reduce the dehydration load on the paper machine, make the paper that meets quality requirements Bamboo pulp refining process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] 1) Screening of bamboo pulp: the bamboo pulp that concentration is 3% is screened through 200 mesh screens, collects the slurry that does not pass through the screen as the long fiber component, and the slurry that passes through the screen is used as the fine fiber component .

[0012] 2) Refining of the long fiber component: adjust the concentration of the long fiber component slurry obtained above to 3%, and then pass through two disc refiners connected in series for refining, and the beating degree reaches 20°SR.

[0013] 3) The mixing of the fine fiber component and the long fiber component after refining the slurry: the long fiber component obtained above is passed through the slurry after refining and the fine fiber component obtained by sieving according to 2.6:1 (slurry The ratio of absolute dry mass) is uniformly mixed, and the degree of beating of the resulting slurry is 35 ° SR.

Embodiment 2

[0015] 1) Screening of bamboo pulp: the bamboo pulp that concentration is 3.5% is screened through 200 mesh screens, collects the slurry that does not pass through the screen as the long fiber component, and the slurry that passes through the screen is used as the fine fiber component .

[0016] 2) Refining of the long fiber component: adjust the concentration of the long fiber component slurry obtained above to 3.5%, and then pass through three disc refiners connected in series for refining, and the beating degree reaches 26°SR.

[0017] 3) The mixing of the fine fiber component and the long fiber component after refining the slurry: the long fiber component obtained above is passed through the slurry after refining and the fine fiber component obtained by sieving according to 2.6:1 (slurry The ratio of absolute dry mass) is evenly mixed, and the degree of beating of the resulting slurry is 41 ° SR.

Embodiment 3

[0019] 1) Screening of bamboo pulp: the bamboo pulp that concentration is 4% is screened through 200 mesh screens, collects the slurry that does not pass through the screen as the long fiber component, and the slurry that passes through the screen is used as the fine fiber component .

[0020] 2) Refining of the long fiber component: adjust the concentration of the long fiber component slurry obtained above to 4%, and then pass through three disc refiners connected in series for refining, and the degree of beating reaches 30°SR.

[0021] 3) The mixing of the fine fiber component and the long fiber component after refining the slurry: the long fiber component obtained above is passed through the slurry after refining and the fine fiber component obtained by sieving according to 2.6:1 (slurry The ratio of absolute dry mass) is evenly mixed, and the degree of beating of the resulting slurry is 44 ° SR.

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Abstract

A bamboo pulp refining process, when bamboo pulp is used to make paper, it is first screened to obtain long-fiber pulp components and fine fiber components, and the long-fiber pulp components are refined so that the long-fiber pulp components The effect of chemicalization is obvious, and then mixed evenly with fine fiber components, the final slurry has enhanced water filtration ability, which is suitable for papermaking by paper machine. During the refining process, the long fiber components of bamboo pulp are difficult to separate into filaments, while the cell walls of the fine fiber components are easily broken, and the water absorption and swelling are obvious. The density rises quickly, but because only part of the long fiber components in the pulp are divided into fibers, the surface is fluffed, and the final paper quality is poor; the invention separates the fine fiber components in the bamboo pulp, and only the long fibers are separated. The fiber component is refined by a refiner, so that the long fiber of bamboo pulp is divided into filaments evenly, and then the fine fiber component is added, so that the water filtration capacity of the final pulp is improved, and the quality of the paper is improved.

Description

technical field [0001] The invention belongs to the papermaking process, in particular to a bamboo pulp refining process in the papermaking process using bamboo pulp. Background technique [0002] At present, in the papermaking process of using bamboo pulp, the refining process is generally as follows: the bamboo pulp with a concentration of 3-4% is refined through 3-4 series-connected refiners in turn to achieve the required degree of beating, and then pumped. To the paper machine for subsequent papermaking process. [0003] However, after the bamboo pulp is refined, the degree of beating increases rapidly, and the pulp is difficult to filter, which increases the dehydration load of the wire section of the paper machine, reduces the speed of the machine, and seriously wears the wire. And to apply bamboo pulp to make paper under lower beating degree, the evenness of paper and every physical strength index can't meet the requirement again. Contents of the invention [000...

Claims

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Application Information

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IPC IPC(8): D21D1/20D21D5/02
Inventor 张美云吴乾斌夏新兴
Owner SHAANXI UNIV OF SCI & TECH
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