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Inorganic environment-friendly plate and preparation method thereof

A sheet and environmental protection technology, applied in the field of inorganic environmental protection sheet and its preparation, can solve the problems of limitation of flammability, flexural strength and compressive strength, low utilization rate of coal gangue and high cost, so as to shorten the solidification molding time, The effect of high flexural and compressive strength and increased utilization

Active Publication Date: 2021-05-28
长治市碳谷科技孵化器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strength requirements of the formed board, the proportion of gangue added is low, and the utilization rate of gangue is not high. In addition, because the raw materials contain organic matter, there are limitations in combustibility, flexural strength and compressive strength, and The cost is also higher

Method used

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Examples

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Effect test

preparation example Construction

[0036] The embodiment of the present application also provides a method for preparing an inorganic environmental protection board, which includes the steps of:

[0037] First, the curing agent is dissolved in water according to the mass fraction ratio of 2-4:100 to form an aqueous solution of the curing agent.

[0038] Secondly, take 30-50 parts of coal gangue, 2-6 parts of cement, 0.2-0.4 parts of reinforcing agent, and 6-10 parts of curing agent aqueous solution in parts by weight, and mix them uniformly to obtain a mortar-like mixture.

[0039] Then, the above-mentioned mortar-like mixture is poured into the grid mold for smoothing, and pressurized to obtain the prefabricated board.

[0040] Finally, after natural curing of the prefabricated boards obtained above, the above-mentioned inorganic environmental protection boards are obtained. Optionally, natural curing of prefabricated slabs for 28d.

[0041] Further, the above-mentioned coal gangue is coal gangue slag after ...

Embodiment 1

[0048] First, calcium silicate is dissolved in water according to the ratio of parts by mass of 2:100 to form an aqueous solution of calcium silicate.

[0049] Secondly, take 30 parts of coal gangue, 6 parts of cement, 0.2 parts of ceramic fiber and 6 parts of calcium silicate aqueous solution in parts by weight, and mix them uniformly to obtain a mortar-like mixture.

[0050] Then, the above-mentioned mortar-like mixture is poured into the grid mold for smoothing, and pressurized to obtain the prefabricated board.

[0051] Finally, after 25 days of natural curing of the above-mentioned prefabricated panels, an inorganic environmental-friendly panel is obtained.

[0052] Wherein, the coal gangue is coal gangue slag after pyrolysis and gasification, and the particles with a particle size of less than 10 mm are taken after crushing and screening. The ceramic fibers are commercially available ceramic staple fibers.

Embodiment 2

[0054] First, calcium fluorosilicate is dissolved in water according to the ratio of parts by mass of 3:100 to form an aqueous solution of calcium fluorosilicate.

[0055] Next, take 50 parts of coal gangue, 2 parts of cement, 0.4 parts of ceramic fiber and 10 parts of calcium fluorosilicate aqueous solution in parts by weight, and mix them uniformly to obtain a mortar-like mixture.

[0056] Then, the above-mentioned mortar-like mixture is poured into the grid mold for smoothing, and pressurized to obtain the prefabricated board.

[0057] Finally, after 28 days of natural curing of the above-mentioned prefabricated boards, the inorganic environmental protection boards were obtained.

[0058] Wherein, the coal gangue is coal gangue slag after pyrolysis and gasification, and the coal gangue slag includes 45% or more of aluminum element. The ceramic fiber is a short ceramic fiber prepared by using high-temperature coal gangue slag after pyrolysis and gasification as a raw materi...

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Abstract

The invention relates to an inorganic environment-friendly board and a preparation method thereof, and relates to the technical field of environment-friendly boards, the inorganic environment-friendly board comprises 30-50 parts of coal gangue, 2-6 parts of cement, 0.2-0.4 part of a reinforcing agent, and 6-10 parts of a curing agent aqueous solution; the preparation method comprises the following steps: dissolving a curing agent in water according to a mass part ratio of (2-4): 100 to form a curing agent aqueous solution; uniformly mixing 30-50 parts by weight of coal gangue, 2-6 parts by weight of cement, 0.2-0.4 part by weight of a reinforcing agent and 6-10 parts by weight of a curing agent aqueous solution to obtain a mortar-like mixture; injecting the mortar-like mixture into a grid mold, trowelling, and carrying out pressure forming to obtain a prefabricated slab; and naturally curing the prefabricated plate to obtain the inorganic environment-friendly plate. The coal gangue is used as a main raw material, the compounding speed of the coal gangue and the cement is increased through the curing agent aqueous solution, the solidification forming time is shortened, the strength of the plate is improved through the reinforcing agent, the utilization rate of the coal gangue is increased, the production cost of the plate is reduced, and the formed plate is high in flexural and compressive strength.

Description

technical field [0001] The present application relates to the technical field of environmental protection plates, in particular to an inorganic environmental protection plate and a preparation method thereof. Background technique [0002] Coal gangue is solid waste discharged during the coal mining process and coal washing process. It is a black-gray rock with low carbon content and harder than coal that is associated with the coal seam during the coal formation process. Its main component is Al 2 o 3 and SiO 2 . At present, my country's coal gangue accumulation is more than 3.5 billion tons, accounting for more than 40% of China's total industrial solid waste discharge. If the gangue is discarded, it will not only occupy a large area of ​​land, but also the escape or leaching of sulfide in the gangue will pollute the atmosphere, farmland and water bodies. [0003] In related technologies, in the process of producing environmentally friendly boards with raw coal gangue a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B14/38C04B35/622C04B22/12C04B22/08C04B18/12
CPCC04B28/00C04B14/46C04B35/62204C04B35/62227C04B22/08C04B22/126C04B18/12C04B2111/00017C04B2201/50Y02W30/91
Inventor 胡勇陈江
Owner 长治市碳谷科技孵化器有限公司
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