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Preparation method of geopolymer-based fiberboard with red mud as raw material

A fiberboard and polymer technology, applied in the field of preparation of geopolymer-based fiberboard, can solve the problems of high production cost, water consumption, energy consumption, etc., and achieve the effects of reducing water washing, reducing production cost, and increasing the selection of types.

Inactive Publication Date: 2014-07-30
广西启利新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a preparation method of geopolymer-based fiberboard using red mud as raw material, so as to solve the problems of energy consumption, water consumption and high production cost of existing geopolymer-based fiberboard preparation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] (1) Use a wood crusher to break the wood into 0.01mm wood fibers, and after magnetic separation, stack them into the silo for later use.

[0018] (2) Prepare fiberboard grinding tools according to the sheet specifications required by customers.

[0019] (3) Take 35kg of liquid water glass with a modulus of 1.5, 19kg of red mud with a water content of 35%, 14kg of 100-mesh slag, 8.5kg of 600-mesh steel slag, 20kg of mechanically crushed wood fiber, 3kg of 5mm long glass fiber, water 0.5kg was added into the mixer, and stirred evenly to obtain a slurry.

[0020] (4) Pour the above fully mixed slurry into the fiberboard mold, scrape it flat, and extrude it with a pressure of 10MPa.

[0021] (5) Release the mold after curing for 6 hours under natural conditions, and then cure under natural conditions for 7-10 days to obtain a finished product with a density of 700kg / m3.

Embodiment 2

[0023] (1) Break the corn stalks into 2mm straw fibers with a wood crusher, and stack them in the silo for later use after magnetic separation.

[0024] (2) Prepare fiberboard grinding tools according to the sheet specifications required by customers.

[0025] (3) Take 20kg of liquid water glass with a modulus of 2.5, 20kg of red mud with a water content of 50%, 20kg of 600-mesh slag, 15kg of 100-mesh steel slag, 13kg of mechanically crushed straw fiber, and 1.0kg of 20-30mm long glass fiber , 0.2kg of 5-8mm long polypropylene fiber and 5kg of water are added in the mixer, and the slurry is obtained by stirring evenly.

[0026] (4) Pour the above fully mixed slurry into the fiberboard mold, scrape it flat, and extrude it with a pressure of 10MPa.

[0027] (5) Release the mold after curing for 6 hours under natural conditions, and then cure for 4-5 days at 50°C to obtain a finished product with a density of 1000kg / m3.

Embodiment 3

[0029] (1), the rice stalk is crushed into straw fibers with a length of 5 mm by a wood crusher, which is stacked in a silo for standby after magnetic separation, and the wood is crushed by a wood crusher into straw fibers with a length of 5 mm, which are then magnetically separated After that, it is stacked in the silo for use.

[0030] (2) Prepare fiberboard grinding tools according to the sheet specifications required by customers.

[0031] (3) Take 32kg of liquid water glass with a modulus of 2.0, 32kg of red mud with a water content of 40%, 7kg of 300-mesh slag, 8kg of 200-mesh steel slag, 10kg of mechanically crushed rice straw fiber, and 8.5kg of mechanically crushed wood fiber , 0.5 kg of long polypropylene fibers with a length of 5 mm, 1 kg of glass fibers with a length of 20 mm, and 1 kg of water were added to the mixer, and stirred evenly to obtain a slurry.

[0032] (4) Pour the above fully mixed slurry into the fiberboard mold, scrape it flat, and extrude it with...

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Abstract

The invention discloses a preparation method of a geopolymer-based fiberboard with red mud as a raw material.The red mud is a solid environmental pollutant, and massive red mud causes multi-aspect influence on production and life of people; the fiberboard is prepared by utilizing the red mud, strength and water resistance of the fiberboard are improved, and utilization rate of waste can be increased, so that environmental pollution is reduced;the existing geopolymer fiberboard production method has the disadvantages that a preparation process of the used filler is complex, water is consumed, energy is consumed, production cost is increased, and the environment is also polluted. The preparation method of the geopolymer-based fiberboard with the red mud as the raw material comprises the following steps: smashing wood fiber, stirring, hobbing, curing and demoulding; the prepared geopolymer-based fibreboard has the advantages that mechanically smashed wood fiber and straw are used for replacing wood fiber obtained by a pulp grinding technology, kinds of fibers are enriched, working procedures such as washing, digesting, softening and hot grinding on wood and a sewage treatment link are eliminated, production efficiency is improved, production energy consumption and water consumption are reduced, production cost is reduced, and sewage discharge is reduced.

Description

technical field [0001] The invention relates to a preparation method of a geopolymer-based fiberboard using red mud as a raw material, and belongs to the technical field of building materials. Background technique [0002] With the improvement of people's living standards and the improvement of living conditions, environmental pollution has attracted more and more attention. Red mud is the polluting waste slag discharged when the aluminum industry extracts alumina. On average, for every ton of alumina produced, 1.0 to 2.0 tons of red mud are incidentally produced. A large amount of red mud cannot be fully and effectively used, causing serious pollution to the environment. The demand for aluminum is increasing, and the production of red mud is increasing year by year. The production of a large amount of red mud has caused many direct and indirect impacts on human production and life. Therefore, the production and harm of red mud should be minimized. It is imminent to realiz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B16/02
CPCY02P40/10
Inventor 黄承好钟勤
Owner 广西启利新材料科技股份有限公司
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