A kind of inorganic environmental protection board and preparation method thereof

A board and environmental protection technology, applied in the field of inorganic environmental protection board and its preparation, can solve the problems of combustibility, flexural strength and compressive strength limitations, low utilization rate of coal gangue, high cost, etc., to shorten the solidification molding time, The effect of high flexural and compressive strength and increased utilization

Active Publication Date: 2022-07-01
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 preparation method of an inorganic environmental protection board, which includes the steps:

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

[0038] Next, 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 solidifying agent aqueous solution by weight, and mix them evenly to obtain a mortar-like mixture.

[0039] Then, the above-mentioned mortar-like mixture is injected into the grid mold and smoothed, and then press-molded to obtain a prefabricated board.

[0040] Finally, after natural curing of the prefabricated board obtained above, the above-mentioned inorganic environmental protection board is obtained. Optionally, the prefabricated panels are naturally cured 28d.

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

Embodiment 1

[0048] First, calcium silicate is dissolved in water at a mass ratio of 2:100 to form a calcium silicate aqueous solution.

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

[0050] Then, the above-mentioned mortar-like mixture is injected into the grid mold and smoothed, and then press-molded to obtain a prefabricated board.

[0051] Finally, after the above-mentioned prefabricated board is naturally cured for 25 days, an inorganic environmental protection board is obtained.

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

Embodiment 2

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

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

[0056] Then, the above-mentioned mortar-like mixture is injected into the grid mold and smoothed, and then press-molded to obtain a prefabricated board.

[0057] Finally, after the above-mentioned prefabricated board is naturally cured for 28 d, an inorganic environmental protection board is obtained.

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

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Abstract

The application relates to an inorganic environmental protection board and a preparation method thereof, and relates to the technical field of environmental protection boards. The inorganic environmental protection board comprises: 30-50 parts of coal gangue, 2-6 parts of cement, 0.2-0.4 parts of a reinforcing agent, and 6- parts of an aqueous curing agent 10 parts; the preparation method includes: dissolving the solidifying agent in water to form a solidifying agent aqueous solution according to the mass ratio of 2-4:100; taking 30-50 parts of coal gangue, 2-6 parts of cement, and 0.2 parts of reinforcing agent by weight ‑0.4 part and 6‑10 parts of the curing agent aqueous solution, mixed uniformly to obtain a mortar-like mixture; after injecting the mortar-like mixture into a grid mold and smoothing, press-molding to obtain a prefabricated board; after natural curing of the prefabricated board, an inorganic Eco-friendly sheet. In the present application, using coal gangue as the main raw material, the compound speed of coal gangue and cement is accelerated by the curing agent aqueous solution, and the solidification molding time is shortened, and the strength of the board is increased by the reinforcing agent, which not only increases the utilization rate of coal gangue, but also reduces the production cost of the board. Moreover, the formed sheet has high flexural and compressive strength.

Description

technical field [0001] The present application relates to the technical field of environmental protection boards, in particular to an inorganic environmental protection board and a preparation method thereof. Background technique [0002] Coal gangue is the solid waste discharged from the coal mining process and coal washing process. 2 O 3 and SiO 2 . At present, the accumulation of coal gangue in my country is more than 3.5 billion tons, accounting for more than 40% of the total industrial solid waste discharge in China. If the coal gangue is not used, it will not only occupy a large area of ​​land, but also the sulfide escape or leaching in the coal gangue will pollute the atmosphere, farmland and water bodies. [0003] In the related art, in the process of producing environmentally friendly plates with raw coal gangue and construction waste as the main raw materials, various organic and inorganic auxiliary materials need to be added, and then the plates are produced b...

Claims

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Application Information

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Patent Type & Authority Patents(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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