Artificial board made of crop straw and method for manufacturing artificial board made of crop straw

The invention relates to a technology of crop straw and a production method, which is applied to the field of crop straw man-made panels and the production thereof, and can solve the problems of not meeting the requirements of different fineness of the fibers of the surface and core layers, restricting the production capacity of the straw man-made panel production line, and increasing the difficulty of crushing by the screen mesh. Achieve the effect of ensuring the apparent quality and physical and chemical properties, the distribution of the shape is reasonable and guaranteed, and the layout of the production line and the control system are simplified

Active Publication Date: 2014-10-01
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the particle size distribution of the hammer crushed by the hammer crusher is relatively wide, and it does not meet the different requirements of the surface core layer on the fiber fineness.
Even if the surface and core layers are divided and crushed separately, such as the surface layer, there will still be some coarse materials appearing on the surface of the board, which will affect the decorative application of the board
At the sa

Method used

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  • Artificial board made of crop straw and method for manufacturing artificial board made of crop straw
  • Artificial board made of crop straw and method for manufacturing artificial board made of crop straw
  • Artificial board made of crop straw and method for manufacturing artificial board made of crop straw

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] As an embodiment of the present invention, the production method of the crop straw-based panel comprises the following steps:

[0040] (1) Using a grass cutter to cut the wheat straw into 30mm grass sections, and control the moisture content of the grass sections at about 18%.

[0041] (2) adopt the pulverizer that the sieve mesh aperture of high power is about 8mm to pulverize described grass section, the fiber particle diameter size after pulverizing meets normal distribution, as figure 1 shown.

[0042] Specifically, the fineness of the pulverized fiber is represented by the mesh number of the vibrating standard sieve, and the sieving value of the pulverized fiber is shown in the following table:

[0043] Sieve type (mesh)

～+12

-12～+20

-20～+40

-40～+60

-60～+80

-80～+100

-100～

Mass ratio%

0.32

5.31

28.75

44.33

14.78

5.31

1.20

[0044] In this embodiment, three 2×132 double-shaft hammer mill...

Embodiment 2

[0054] As an embodiment of the present invention, the production method of the crop straw-based panel comprises the following steps:

[0055] (1) Using a grass cutter to cut the wheat straw into 33mm grass sections, and control the moisture content of the grass sections at about 17.5%.

[0056] (2) Adopt the pulverizer that high-power sieve mesh aperture is about 7mm to pulverize described grass section, the fiber particle size after pulverizing meets normal distribution, as figure 1 shown.

[0057] Specifically, the fineness of the pulverized fiber is represented by the mesh number of the vibrating standard sieve, and the sieving value of the pulverized fiber is shown in the following table:

[0058] Sieve type (mesh)

～+12

-12～+20

-20～+40

-40～+60

-60～+80

-80～+100

-100～

Mass ratio%

0.3

5.58

28.65

45.62

14.07

4.62

1.16

[0059] In this embodiment, three 2×136 double-shaft hammer mills are used, the...

Embodiment 3

[0069] As an embodiment of the present invention, the production method of the crop straw-based panel comprises the following steps:

[0070] (1) Using a grass cutter to cut the wheat straw into 28mm grass sections, and control the moisture content of the grass sections at about 18.2%.

[0071] (2) adopt the pulverizer that the sieve mesh aperture of high power is about 8mm to pulverize described grass section, the fiber particle diameter size after pulverizing meets normal distribution, as figure 1 shown.

[0072] Specifically, the fineness of the pulverized fiber is represented by the mesh number of the vibrating standard sieve, and the sieving value of the pulverized fiber is shown in the following table:

[0073] Sieve type (mesh)

～+12

-12～+20

-20～+40

-40～+60

-60～+80

-80～+100

-100～

Mass ratio%

0.35

5.28

28.55

44.53

14.78

5.41

1.10

[0074] In this embodiment, three 2×132 double-shaft hammer mi...

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Abstract

The invention discloses a method for manufacturing an artificial board made of crop straw. The method for manufacturing the artificial board made of crop straw comprises the steps that (1) the straw is cut into straw sections with the lengths ranging from 20 mm to 40 mm, wherein the water content of the straw sections ranges from 12% to 20%; (2) the straw sections are pulverized by means of a pulverizer, wherein the mesh size of the pulverizer ranges from 5 mm to 10 mm, the sizes of fiber particles obtained after pulverization are in normal distribution, the value of mu ranges from 0.2 mm to 1.0 mm, and the value of sigma ranges from 0.2 mm to 0.6 mm; (3) coarse materials and fine materials are obtained by screening the fibers obtained after pulverization through a screening device, wherein the ratio of mass of the coarse materials to the mass of the fine materials is 1-2:1-2; (4) the coarse materials and the fine materials are dried respectively, the water content of the coarse materials is controlled between 8% and 14%, and the water content of the fine materials is controlled between 10% and 14%. According to the method for manufacturing the artificial board made of crop straw, materials, obtained after screening, of a surface core layer of the artificial board made of crop straw can meet different form distribution requirements, namely, thick wood shavings do not exist in the surface layer, and superfine fibers do not exist in the core layer.

Description

technical field [0001] The invention relates to the field of artificial board manufacturing, in particular to a crop straw artificial board and a production method thereof. Background technique [0002] Crop straw is a valuable renewable resource, and the annual output of crop straw in my country is about 700 million tons. However, due to the influence of consumption concepts and lifestyles for a long time, my country's rural straw resources are completely in a state of high consumption, high pollution, and low output. A considerable part of crop straws are discarded or burned, and have not been rationally developed and utilized. Making full use of straw, a renewable resource, is undoubtedly one of the effective ways to solve the shortage of resources. The use of crop straws to make wood-based panels is one of the projects that is indeed feasible and has already been industrialized. [0003] However, the status quo of the straw-based panel industry is not optimistic. The bo...

Claims

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Application Information

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IPC IPC(8): B27N3/04B27N3/12
Inventor 刘旭晴蒋海东高友庆胡德弟马德强于文杰
Owner WANHUA CHEM GRP CO LTD
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