Preparation method of natural-color bamboo fiber biochemical mechanical pulp

Abstract

The invention belongs to the field of pulping and papermaking, and specifically relates to a preparation method of a natural-color bamboo fiber biochemical mechanical pulp. The method comprises the following steps: 1) preparing materials by a dry method; 2) sending bamboo chips obtained in the step 1) to a press for pressing; 3) mixing animal manure and the bamboo chips, and screened-out finely-divided debris such as bamboo sawdust, bamboo piths and knots according to a ratio, then performing aerobic fermentation composting, and adding efficient active biological complex bacteria while mixing;4) performing screening and dust removal treatment after fermentation is completed; 5) washing away surface substances of the bamboo chips after screening and dust removal, and removing excess water;6) performing pre-impregnation with a lye; 7) performing pulp grinding or pulp beating; and 8) performing papermaking. The method uses the combination of biological, chemical, and physical methods toproduce the natural-color bamboo fiber chemical mechanical pulp for packaging. At the same time, the method makes full use of the leftover materials in the production process to turn waste into treasure, and realizes sufficient and high-quality utilization of bamboo raw materials.

Description

technical field [0001] The invention belongs to the field of pulping and papermaking, and in particular relates to a method for preparing a high-density pulp by using bamboo as a raw material by cutting off raw materials, pre-pressing, mixing and fermenting, screening and dedusting, washing, lye pre-impregnation, high-consistency beating, low-consistency beating, and papermaking. Natural bamboo fiber biochemical mechanical pulp with added value, less environmental pollution and better quality for packaging; natural bamboo fiber biochemical mechanical pulp can also be used to make natural paper and other products. Specifically, it is a preparation method of natural bamboo fiber biochemical mechanical pulp. Background technique [0002] In recent years, my country's paper industry has been in the transition period of reducing production capacity and adjusting structure. Compared with other packaging materials, packaging paper and cardboard, as the main packaging materials, are...

AI Technical Summary

Problems solved by technology

This method can solve the raw material bottleneck problem faced by the existing packaging paper and cardboard manufacturers in my country, make full use of high-yield and high-quality bamboo as raw material, and combine biological, chemical and physical methods to produce natural color bamboo fiber chemical mechanical pulp for packaging , and at the same time make full use of the leftovers in the production process (that is, bamboo chips, pith, knots and other sundries), turn waste into treasure, realize the full and high-quality utilization of bamboo raw materials, and through mixed fermentation, a On the one hand, it makes the surface of bamboo slices more porous and softens the material, which alleviates the problems of controlling the uniformity of cooking and quality instability due to the tight and firm bamboo structure and difficulty in soaking; on the other hand, it makes cow dung, sheep dung, horse dung, pig dung Manure and other animal manure become a more comprehensive bio-organic fertilizer

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