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Process for producing paper pulp, compressed paperboard prepared with paper pulp and application of paperboard

A production process and pulp technology, applied in papermaking, fiberboard, textiles and papermaking, etc., can solve the problem of high cost, achieve low cost, smooth surface, and create economic value

Inactive Publication Date: 2011-06-29
莫少莲
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the recycling of sewage from paper mills is a very hot topic. Some people also deposit the sewage from paper mills, add its waste residue to fibrous substances, and then reuse it for papermaking. However, this technology requires In addition, fiber-like substances are added, so the cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Compression molded cardboard

[0033] First prepare the pulp of the compression-molded cardboard of this embodiment, and its preparation process is as follows:

[0034] After the sewage discharged during the production process of the paper mill is subjected to sedimentation treatment in the sedimentation tank, the sedimentation mud is collected (the sedimentation mud contains 90-97% water, percent by weight);

[0035] Clean the waste cotton dust from large cotton spinning factories (after removing large pieces of cloth, cotton thread, leather and other coarse particles) and collect short lint;

[0036] Add the above-mentioned short lint to the above-mentioned sedimentation mud to obtain the material to be beaten, the addition of the short lint is 10% to 40% of the dry product, percentage by weight; the material to be beaten is subjected to beating treatment by a hydraulic beater, Let it be fully mixed and stirred to form a pulp, and the pulp is vibrated to r...

Embodiment 2

[0049] Example 2 Compression molded cardboard

[0050] First prepare the pulp of the compression-molded cardboard of this embodiment, and its preparation process is as follows:

[0051] After the sewage discharged in the production process of the paper mill is subjected to air flotation treatment in the air flotation tank, the upper layer mud obtained by air flotation is collected; the water content in the mud is 90-97%, the weight percentage.

[0052]Remove impurities from the waste cotton dust of large cotton spinning mills (after removing large pieces of cloth, cotton thread, leather and other coarse particles) and collect short lint (2-3mm lint);

[0053] The sawdust required by the present invention is obtained after the sawdust and crushed materials of the furniture factory are screened out of coarse particles;

[0054] Add the above-mentioned short lint and the above-mentioned sawdust to the above-mentioned sedimentation slurry to obtain the slurry to be beaten, and ...

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PUM

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Abstract

The invention discloses a process for producing paper pulp, a compressed paperboard prepared with the paper pulp and application of the paperboard. The process is characterized by firstly pretreating the sewage discharged from the paper mill in the production process, collecting the slurry, adding short velveteen to the slurry to obtain the pulp to be beaten, then beating the pulp to be beaten by adopting a hydraulic beater to fully mix and stir the pulp to prepare paper pulp and carrying out vibration screening and residue removal on the paper pulp to obtain the needed paper pulp. By adopting the process, not only can the problem of treatment of sewage in the paper mill be solved, but also the waste velveteen and sawdust are adopted as the raw materials, thus not only ensuring low cost, but also realizing recycling of the wastes, being beneficial to environmental protection and creating economic values. The compressed paperboard is non-toxic and harmless, has low cost and better economic value, can be suitable for many aspects and is beneficial to large-scale popularization.

Description

Technical field [0001] The present invention involves the field of papermaking technology, especially the regeneration and utilization technology of papermaking waste. It specifically involves a process of preparing pulp with sewage discharged in the production process of paper mills, as well as the method of preparing plastic paperboard with this pulp and plastic compression plastic.Cardboard and application. Background technique [0002] The sewage treatment of existing paper mills is a headache for major paper manufacturers. Especially under the environment where environmental awareness is getting stronger, the commonly used landfill process and incineration process are becoming more and more limited. Therefore, finding more appropriate sewage treatmentCraftsmanship is an imminent issue. [0003] At present, regeneration and utilization of the sewage in the paper mill is a very hot topic. Some people also take the sewage of the paper mill after the sedimentation is precipitate...

Claims

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Application Information

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IPC IPC(8): D21C5/00D21J1/00C02F11/00
Inventor 莫少莲
Owner 莫少莲
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