Method for realizing mid-consistency grinding in low-consistency device

A low-consistency refining and equipment technology, applied in pulp beating/refining methods, mechanical/thermomechanical pulping, chemical/chemical mechanical pulping, etc., can solve the problem of reducing the use range of short-fiber pulp, low energy utilization, and beating Problems such as high energy consumption can achieve the effect of promoting development and application, improving paper quality, and alleviating insufficient supply
CN101654884BInactive Publication Date: 2012-05-23GOLD EAST PAPER JIANGSU
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
GOLD EAST PAPER JIANGSU
Publication Date
2012-05-23
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention discloses a method for realizing mid-consistency grinding in a low-consistency grinding device. In a slurry preparing stage, a slurry flowage modifier is added so that the slurry flowability is unchanged after increasing the grinding consistency to realize mid-consistency grinding in the low-consistency grinding device. The method comprises the specific steps as follows: placing paper pulp into a pulper for pulping, and adding a slurry flowage modifier inthe pulping process, wherein the use amount of the flowage modifier is 0.005-5 percent of that of oven dry stock; and grindingthe mid-consistency slurry of 6-8 percent after adding the slurry flowage modifier in the low-consistency grinding device for grinding. The method is simple and safe, and realizes mid-consistency grinding in the low-consistency grinding device without equipment investment; in addition, the manufactured slurry can be applied as ordinary slurry for improving the quality of paper.
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Description

technical field

[0001] The invention belongs to the field of pulping and papermaking, and in particular relates to a method for realizing medium-consistency (6%-8%) refining in low-consistency (concentration below 5%) equipment. The slurry prepared by the method can be directly used in papermaking. Background technique

[0002] "Ten points for papermaking, seven points for beating", the importance of beating equipment is particularly important for the paper industry. The beating equipment has also developed rapidly in recent decades, from the early trough beater to the later conical refiner, cylindrical refiner and now widely used double-disc refiner; , Developed to continuous refining, while improving the quality of beating, it also takes into account the needs of actual mass production. In particular, in the late 1990s, with the implementation of high-speed and large-width paper machines in a series of factories such as Gold East Paper, the development of double-disk ref...

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
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