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Method for manufacturing formed plate by utilizing papermaking wastes

A paper-making waste and board technology, which is applied in the field of forming board materials, can solve the problems of poor mechanical properties, low utilization rate of paper-making waste, and low production efficiency, and achieve the effects of uniform density, stable and reliable quality, and convenient processing

Inactive Publication Date: 2010-06-16
刘保军
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the invention is to overcome the defects and deficiencies of poor mechanical properties of the plates produced in the prior art, low production efficiency, and low utilization rate of papermaking waste, and propose a method for making shaped plates using papermaking waste. The method of the present invention The utilization of papermaking waste is comprehensive, the product quality is stable, the production efficiency is high, and there is no discharge of three wastes. The formed board products produced have high adhesive strength, good mechanical properties such as compression resistance, tensile resistance, bending resistance, and impact resistance. Extensive, especially suitable for industrial mass production

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The method of the invention is adopted to produce the paper-making flat paper plywood, the specification of the paper-making flat paper plywood is 787×1092 millimeters, and the board thickness is 10 millimeters.

[0050] A method for making a shaped paper-making flat-panel paper plywood product by using papermaking waste, comprising the following steps:

[0051] A. Select 5 parts by weight of air-dried cut-off dedusting slag, 10 parts of pulp slag, 70 parts of papermaking sludge with a moisture content of 65%, and 15 parts of boiler flue gas desulfurization gypsum, and put the above four raw materials into the mixer Mix evenly, dry in a tunnel dryer at a hot air temperature of 140-150°C, and after drying, pulverize in a ball mill to obtain powdered mixed raw materials. The fineness of the powder is 100 mesh, and the fiber material is divided into filaments;

[0052] B. choose 75 parts of powdered mixed raw materials by weight, 25 parts of magnesium lignosulfonate or cal...

Embodiment 2

[0055] The method of the invention is adopted to produce the paper-making flat paper plywood, the specification of the paper-making flat paper plywood is 787×1092 millimeters, and the board thickness is 15 millimeters.

[0056] A method for making a shaped paper-making flat-panel paper plywood product by using papermaking waste, comprising the following steps:

[0057] A. Select 10 parts by weight of air-dried cut-off dedusting slag, 10 parts of pulp slag, 65 parts of papermaking sludge with a moisture content of 70%, and 15 parts of boiler flue gas desulfurization gypsum, and put the above four raw materials into the mixer Mix evenly, and dry in a tunnel dryer at a hot air temperature of 140-150°C. After drying, it is pulverized by a ball mill to obtain a powdery mixed raw material. The fineness of the powder is 80 mesh, and the fiber material is divided into filaments;

[0058] B. Select 75 parts by weight of powdery mixed raw materials, 25 parts of magnesium lignosulfonate ...

Embodiment 3

[0061] The method of the invention is used to produce light-weight partition wallboard molded products. The specifications of the light-weight partition wallboard molded products are 2000×800 millimeters, and the board thickness is 80 millimeters.

[0062] The method for making lightweight partition wallboard molded products by using papermaking waste comprises the following steps:

[0063] A. Select 10 parts by weight of air-dried cut-off dedusting slag, 10 parts of pulp slag, 65 parts of papermaking sludge with a moisture content of 50%, 10 parts of boiler flue gas desulfurization gypsum, and plants with a length of 10 to 15 mm after air-drying 5 parts of straw granules, put the above five raw materials into a mixer and mix them evenly, then dry them in a tunnel dryer at a hot air temperature of 140-150°C, and then pulverize them in a ball mill to obtain powdery mixed raw materials, among which The fineness of the powder is 50 mesh, and the fiber material is divided into fil...

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Abstract

The invention relates to a method for manufacturing a formed plate by utilizing papermaking wastes, comprising the following steps of: A. preparing cut-off dust-removing material residues, slurry residues, papermaking sludge and boil flue gas-desulphurizing gypsum by weight part, uniformly mixing, drying and then pulverizing into a powdery mixed raw material; B. preparing the powdery mixed raw material, a magnesium lignosulfonate solution or a calcium lignosulphonate solution and plant straw particles by weight part, and uniformly mixing to obtain a basic raw material of the plate; and C. placing the basic raw material of the plate in a forming mould and implanting a strip-shaped skeleton or a grid-shaped skeleton, slicking, demoulding after forming the basic raw material of the plate by the compression of a press machine, and then sizing and drying to obtain the product of the formed plate. The method comprehensively utilizes a plurality of papermaking wastes and has the advantages of simple technology, low production cost, good quality, no three-waste discharge and no environmental pollution, and the manufactured formed plate has the advantages of high adhesive strength, high mechanical properties comprising compression resistance, tensile resistance, bending resistance, impact resistance and the like, good processing performance and wide application range.

Description

technical field [0001] The invention relates to a method for making shaped boards from papermaking waste, in particular to the use of a large amount of cut material, dust removal slag, pulp slag and sludge produced after sewage treatment, boiler flue gas desulfurization gypsum, etc. produced in the production process of a paper mill As a basic production raw material, it is a method of producing shaped sheet materials with a certain density and size. Background technique [0002] At present, the main treatment methods for paper mills to deal with a large amount of cuttings, dust, slag, pulp slag, papermaking sludge and boiler flue gas desulfurization gypsum generated after sewage treatment are as follows: first, mix it into The second is to find a place to landfill, and the third is to make the sludge and boiler flue gas desulfurization gypsum into paper or plastic industry fillers. Though solve the processing problem of papermaking waste temporarily like this, there are fo...

Claims

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Application Information

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IPC IPC(8): B27N3/02B27N1/00B27N3/08B27N3/10C04B28/14C04B18/24
CPCY02W30/91
Inventor 刘保军
Owner 刘保军
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