Unlock instant, AI-driven research and patent intelligence for your innovation.

Processing method of slurry and slurry prepared by the method

A processing method and slurry technology, applied in fiber raw material processing, pulp beating/refining methods, textiles and papermaking, etc., can solve the problem of severe cutting of main fibers, limited degree of broken fiber bundles, and damage to the drainage strength of slurry, etc. problem, to achieve the effect of reducing the content of fiber bundles

Active Publication Date: 2016-03-09
金隆浆纸业(江苏)有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the characteristics and properties of the fiber bundles, conventional refining can only break the fiber bundles (mainly by cutting them to make them shorter), and the actual refining process cannot perform high-power refining, so the fiber bundles are broken by fine pulping. very limited
If high-power heavy refining is used, although it can further disintegrate the fiber bundles, heavy refining will cause the main fiber to be severed, and the content of fine fibers will increase too much, resulting in the loss of pulp filtration and partial strength. The applicability of severe refining is not high in actual production

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Processing method of slurry and slurry prepared by the method
  • Processing method of slurry and slurry prepared by the method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The treated slurry is NBCTMP pulp (coniferous wood BCTMP pulp), the slurry mass percentage concentration is 4.5%, and the slurry pH is 7.8; the enzyme treatment conditions are: laccase 100ppm, hemicellulase 100ppm, treatment temperature 45 ° C, enzyme The treatment time is 120 minutes; after the enzyme pretreatment, the pulp is lightly ground by a Valli beater, the refining concentration is 1.8%, and the freeness of the refining is ground to 360ml to 270ml.

Embodiment 2

[0032] Treated slurry is NBCTMP pulp (coniferous wood BCTMP pulp), slurry mass percentage concentration is 5%, slurry pH is 7.5; Enzyme treatment condition is: laccase 150ppm, lignin peroxidase 150ppm, hemicellulose Enzyme 80ppm, treatment temperature 45 ℃, enzyme treatment time is 90min; after enzyme pretreatment, NBCTMP pulp and LBKP pulp are mixed and refined, slurry ratio (20% NBCTMP+80% LBKP), refining concentration is 1.8%, after The Valli beater grinds the pulp to a freeness of 380ml to 320ml.

Embodiment 3

[0036] The treated slurry is NBCTMP pulp (coniferous wood BCTMP pulp), the slurry mass percentage concentration is 5%, and the slurry pH is 7.5; the enzyme treatment conditions are: laccase 300ppm, lignin peroxidase 200ppm, hemicellulose Enzyme 100ppm, treatment temperature 50°C, enzyme treatment time 60min; after enzyme pretreatment, NBCTMP pulp and NBKP pulp were mixed and refined, the slurry ratio (30% NBCTMP+70% NBKP), the refining concentration was 1.8%, after The Valli beater grinds the pulp to a freeness of 400ml to 350ml.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a papermaking slurry treatment method. The papermaking slurry treatment method comprises the following steps: providing unground slurry; before grinding, adding a combined enzyme to the slurry so as to carry out enzyme treatment on the slurry, wherein the combined enzyme is a mixture of at least one of laccase and ligninase and hemicellulase, the mass ratio of hemicellulase to the sum of laccase and ligninase in the combined enzyme is 1:8-1:1, and the addition amount of the combined enzyme is 200-600ppm / ton oven dry stock; carrying out grinding treatment on the slurry subjected to enzyme treatment. The invention also provides the slurry prepared from the method. The slurry treatment method can be used for effectively reducing the content of fiber bundles in the slurry.

Description

technical field [0001] The invention relates to a slurry processing method and the slurry prepared by applying the processing method. Background technique [0002] Due to the pulping process, a certain amount of fiber bundles remain in both mechanical pulp and chemical mechanical pulp (chemical mechanical pulp). The reason for the formation of fiber bundles is that the wood chip raw materials for the preparation of mechanical pulp or chemical mechanical pulp have not been pretreated or only undergone a small amount of chemical pretreatment, and the lignin and other components of the fiber intercellular layer have not been deeply damaged, so they enter the post-stage machinery. Refining, there is still a large amount of lignin (reticular molecular structure composed of phenylpropane units) in the intercellular layer of wood chip raw materials. The presence of lignin makes the fiber cell aggregates have a stable structure. , the intercellular layer composed of lignin is diffi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): D21C5/00D21D1/20
Inventor 闫培养秦昀昌杨露
Owner 金隆浆纸业(江苏)有限公司