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Method for preparing fibers from waste and timber

A kind of wood and waste technology, which is applied in the field of fiber preparation by using waste wood, can solve the problems of fiber shape damage and unsuitability, and achieve the effects of alleviating supply shortage, reducing cutting power, and excellent fiber performance

Inactive Publication Date: 2007-02-21
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is only suitable for the production of scrap units, and the fiber morphology is severely damaged, so it is not suitable for the production of medium and high density fiberboards

Method used

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  • Method for preparing fibers from waste and timber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1: Fabrication of fibers using recycled solid wood building components

[0036] The recovered solid wood building components B are sent to the primary crusher by the waste wood conveyor A, and the metal bumps D distributed in a spiral shape on the main shaft E are rotated by the primary crusher to cooperate with the bottom knife C on the bottom knife bracket H of the primary crusher. Cut the recycled solid wood building components B horizontally to form a strip unit F; when the recovered solid wood building components are processed into strip units, the attached metal parts and cement impurities basically fall off (the residual metal parts are transported to the chips after the wooden strips are transported to the chips) The metal parts that fall off are collected by magnetic separation and recycled, and other impurities are collected separately; the strip-shaped units processed by the recycled solid wood building components are further transported to the chipper...

Embodiment 2

[0037] Example 2: Fabrication of fibers from recycled panel furniture (medium density fibreboard)

[0038] The recovered panel furniture B is sent to the primary crusher by the waste wood conveyor A, and the metal bump D on the main shaft E is rotated by the primary crusher, and the metal bump D on the main shaft E is matched with the bottom knife C on the bottom knife bracket H of the primary crusher. Cut the recycled panel furniture B to form a strip unit F; when the recovered panel furniture is processed into a strip unit, the attached metal parts and cement impurities basically fall off (the residual metal parts are transported to the chipper during the process of transporting the wooden strips to the chipper) manually picked out); the fallen metal parts are collected by magnetic separation and recycled, and other impurities are collected separately; the strip units processed by the recycled solid wood building components are further transported to the chipper by the strip un...

Embodiment 3

[0039] Example 3: Preparation of fibers using recycled cement formwork

[0040] The recycled poplar multi-layer plywood cement formwork B with a thickness of 12-18mm is sent to the primary crusher by the waste wood conveyor A, and the metal bumps D distributed in a spiral shape on the main shaft E are rotated by the primary crusher to cooperate with the bottom of the primary crusher. The bottom knife C on the knife bracket H cuts the recycled cement formwork B horizontally to form a strip unit F; when the recovered cement formwork is processed into a strip unit, the attached metal parts and cement impurities basically fall off (residual metal parts Manually picked out during the process of transporting wood strips to the chipper); the fallen metal parts are collected by magnetic separation and recycled, and other impurities are collected separately; the strip units processed by the recovered cement formwork are sent by the strip unit conveyor It is further transported to the c...

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Abstract

A process for preparing fibers from used and rejected wood includes such steps as transverse cutting to become strip units, collecting impurities, longitudinal cutting to become wood sheets, removing impurities, mixing with the wood sheets made of fresh wood and hot grinding to obtain fibers.

Description

technical field [0001] The invention belongs to the field of wood processing and relates to a method for preparing fibers from waste wood. Background technique [0002] Shrinking forest resources and increasingly globalized timber supply are causing a series of environmental and resource conflicts. China's forest resources are particularly scarce, and the lack of wood raw materials has seriously threatened the sustainable development of the wood industry. Fibreboard manufacturing is the largest consumer of wood in the wood industry. At present, the main measures to solve the contradiction between the supply and demand of fiberboard wood raw materials are: (1) Vigorously cultivate artificial forests: China's artificial forest area ranks first in the world, but compared with the huge timber demand gap, it is still insufficient. The development is exhausted; (2) Imported timber: China imports logs from Southeast Asia, South Africa, Europe and North America extensively, but it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B27L11/08
Inventor 陈建华张齐生胡政周定国张建松徐信武何文
Owner DARE TECH
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