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Method for manufacturing section bar using papermaking sludge

A technology for papermaking sludge and profiles, which is used in dewatering/drying/concentrating sludge treatment, solid waste removal, sustainable waste treatment, etc. Good waterproof effect, low cost and high hardness

Inactive Publication Date: 2007-10-03
吴国锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention solves the problems of paper sludge difficult to handle and insufficient strength of the composite board existing in the prior art, and provides a clean and environmentally friendly, low-cost, one-time forming, high-strength man-made profile that utilizes paper-making sludge to manufacture artificial Profile process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1: Use the terminal water treatment waste of the paper mill—silt-like waste, commonly known as 4-5 grade waste, after collection, spread it on a heating platform and bake it, and continue for 8 months under the condition of ventilation and 50 degrees Celsius Hour, this moment, layer thickness is 10 centimetres, wherein moisture accounts for 10% of total weight about after drying, sprinkles urea-aldehyde glue on the layer surface, and the content of urea-aldehyde glue is 60% of sludge, and sludge is now Put it into the storage barrel, at this time, the urea-aldehyde glue is basically mixed with the sludge evenly, and the sludge is pressed out under the condition of 210 degrees Celsius and 21Mpa, which is similar to the extrusion molding of the plastic industry. Through a rectangular forming port, the papermaking in the barrel Sludge is extruded, cut into 2 meters wide and 3 meters long wood-based panels at a time according to needs, dried until the water content i...

Embodiment 2

[0018] Embodiment 2: With the terminal water treatment waste of paper mill—silt-like waste, mainly short fibers and other wood fibers and a mixture of organic matter, commonly known as 4-5 grade waste, piled up and stored for 4 days after collection, and its Lay it on a heating platform and bake it for 15 hours under the condition of ventilation and 40 degrees Celsius. At this time, the thickness of the layer is 10 cm. After drying, the moisture accounts for about 30% of the total weight, and it is placed in the glue mixer. Add 14% cornstarch by weight, mix the starch and dried papermaking sludge evenly in the glue mixer, put the sludge into the storage tank, and press out the sludge under the condition of 200 degrees Celsius and 60Mpa, similar to the plastic industry Extrusion molding, through a ring-shaped molding mouth, cut into artificial tubes with a width of 2 meters and a length of 3 meters as required, dry to a water content of 10%, and cool for 1 hour in the tube with ...

Embodiment 3

[0019]Embodiment 3: use the terminal water treatment waste of the paper mill—silt-like waste, commonly known as 4-5 grade waste, spread it on a heating platform and bake it, and continue for 8 hours under the condition of ventilation and 60 degrees Celsius. At this time, the layer thickness is 10 centimeters after drying wherein the moisture accounts for about 20% of the total weight, and the surface of the layer is sprinkled with 35% urea-aldehyde glue of the weight of the layer and simultaneously adds 400% weight of rice stalks. Rice stalks are crushed granules, mix them evenly in a rubber mixer, fill the mixture in a rectangular mold cavity, pre-press it into a plate shape under a pressure of 28Mpa, cool it for 2 hours, and place it with In another mold cavity, press again under the condition of 210 degrees Celsius and 40Mpa. During rapid pressing, the mounting object on the surface of the upper and lower mold cores - decorative paper is glued to both sides of the board. Aft...

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Abstract

A process for preparing the shaped material (artificial plate) from the sludge generated by making paper includes such steps as dewatering, baking, adding glue, stirring, pressing under 10MPa, and baking.

Description

technical field [0001] The invention relates to a manufacturing process of man-made profiles, in particular to a process for making man-made profiles by using waste sludge from paper mills. Background technique [0002] The total discharge of my country's paper industry is second only to chemical industry and steel, ranking third in the discharge of the industrial sector, while COD discharge accounts for one-third of the national industrial discharge. The paper industry is a highly polluting industry. At present, the sewage discharge of my country's pulp and paper industry accounts for about 10-12% of the total sewage discharge in the country; the chemical oxygen consumption in the sewage discharge accounts for about 40-45% of the total discharge of the country, ranking No. one. The wastewater in pulping and papermaking production is mainly composed of three parts: cooking waste liquid, mid-stage wastewater and papermaking white water. The pollution load of cooking waste li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B18/04C04B24/10B09B3/00C02F11/12
CPCY02W30/91
Inventor 吴国锋
Owner 吴国锋
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