KR101996273B1 - Radon gas reduction building board using synthetic zeolite and manufacturing method thereof - Google Patents

Abstract

The present invention relates to a board for reducing laundromat using synthetic zeolite and a method for manufacturing the same, and it is intended to prevent the board from being warped or cracked while recycling industrial by-products, and also, by using synthetic zeolite, It is possible to reduce the harmful substances generated in the process.

Description

TECHNICAL FIELD [0001] The present invention relates to a board for reducing longevity reduction using synthetic zeolite and a method for manufacturing the same,

[0001] The present invention relates to a board for reducing laundromat using synthetic zeolite and a method of manufacturing the same, and more particularly, to a board for reducing longevity by using synthetic zeolite, Of course, the present invention relates to a board for low-loss gas reduction utilizing a synthetic zeolite capable of reducing harmful substances generated in a process, and a method for manufacturing the board.

97% of the air that people drink for a lifetime is called indoor air. Indoor air pollution and its associated health hazards have already been addressed by the WHO as well as the US and other developed countries.

WHO reports that the number of deaths due to air pollution reaches up to 6 million per year, and in particular, 2.8 million deaths from indoor air each year, explaining how important indoor air quality is.

Of indoor air pollutants, volatile organic compounds (VOC), formaldehyde (HCHO), fine dust, radon (Rn) and the like are the most harmful to human body. Radon is very fatal because it causes lung cancer.

Radon, a primary carcinogen that induces lung cancer, is a gaseous substance such as colorless, odorless, tasteless, chemically inert, large in mobility, 9 times heavier than air, close to the surface, and easily absorbed into human body through respiration.

WHO has already classified such radon as a carcinogen in 1988, and 3 to 14% of lung cancer worldwide is caused by radon, and it defines radon as a major cause of lung cancer after smoking. The International Agency for Research on Cancer (IARC) also defines asbestos as a first-rate carcinogen in terms of health hazards. According to the EPA, the long-term residence time of 4 picosy- , 62 of 1,000 smokers and 7 of 1,000 smokers have lung cancer.

As a technique for reducing such radon, Patent Registration No. 454753 describes a method of suppressing the release of radon by adding a radon blocking agent to concrete when a building is constructed. However, there is a problem that the reduction efficiency is low because the radon reduction rate is less than 30% have.

Korea Patent No. 454753

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method and apparatus for preventing bending and cracking of a board while reusing industrial byproducts, and using synthetic zeolite for air purification, The present invention provides a board for reducing lardin gas utilizing synthetic zeolite capable of reducing harmful substances generated during the process and a method for manufacturing the same.

A second object of the present invention is to provide a board for reducing laundromat which is excellent in bending strength and compressive strength when used together with air purification, and a method for manufacturing the board.

According to a first aspect of the present invention, there is provided a method of manufacturing a board for reducing laid-on-gas using synthetic zeolite, wherein magnesium chloride is added in an amount of 20 to 30 parts by weight per 100 parts by weight of magnesia cement. Adding 20 to 30 parts by weight of the adsorbent to 100 parts by weight of the magnesia cement to produce a second mixture by adding 20 to 30 parts by weight of the adsorbent to 100 parts by weight of the magnesia cement; To 8 to 12 parts by weight of industrial by-products such as fly ash and blast furnace slag to the secondary mixture to produce a tertiary mixture; and 35 to 45 parts by weight of water relative to 100 parts by weight of the magnesia cement to the tertiary mixture (S40) of adding a quaternary mixture to the autoclave in a board form and then curing the mixture to form a quaternary mixture, Based adsorbent is characterized by consisting of an alkali, water, and consisting of a mixture of an organic such as silica, to which slowly crystallized alumina, synthetic zeolite having adsorption properties by the action of the cations in the crystal structure.

A second aspect of the present invention is the second aspect of the present invention, wherein, in the first invention, the synthetic zeolite comprises 39 to 45 wt% of aluminum, 54 to 60 wt% of silicon, 1 to 1.2 wt% of phosphorus, 0.012 to 0.018 wt% of potassium, By weight, and 0.007 to 0.001% by weight of titanium.

The third aspect of the present invention relates to a board for reducing lardin gas utilizing synthetic zeolite and is characterized in that it is manufactured by any one of the first invention and the second invention.

According to the board for reducing laundromat using the synthetic zeolite of the present invention and the manufacturing method thereof, it is possible to substitute natural resources such as existing bentonite, diatomaceous earth and ilite having an adsorption function, There is a better effect.

In addition, the synthetic zeolite can be used to lower the unit cost as well as to wash, oxidize, sterilize, and deodorize the air as well as the lard.

FIG. 1 is a flow chart of a method for manufacturing a board for reducing laid-down gas using synthetic zeolite according to the present invention,
FIG. 2 is a graph showing the compressive strength of a board prepared by replacing an adsorbent with synthetic zeolite (13X, 4A), OPC, diatomaceous earth, and natural zeolite at 3 days, 7 days, 28 days,
FIG. 3 is a graph showing the bending strengths of the boards prepared by replacing the adsorbent with the synthetic zeolite (13X, 4A), OPC, diatomaceous earth, and natural zeolite at three days, seven days,
FIG. 4 is a graph showing the results of lardon gas emission of a board manufactured by replacing an adsorbent with synthetic zeolite (13X, 4A), OPC, diatomaceous earth, and natural zeolite.

BRIEF DESCRIPTION OF THE DRAWINGS The above and other objects, features, and advantages of the present invention will become more readily apparent from the following description of preferred embodiments with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms.

Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

The embodiments described and exemplified herein also include their complementary embodiments.

In the present specification, the singular form includes plural forms unless otherwise specified in the specification. The terms "comprise" and / or "comprising" used in the specification do not exclude the presence or addition of one or more other elements.

Hereinafter, the present invention will be described in detail with reference to the drawings. In describing the specific embodiments below, various specific details have been set forth in order to provide a more detailed description of the invention. However, it will be appreciated by those skilled in the art that the present invention may be understood by those skilled in the art without departing from such specific details. In some cases, it should be mentioned in advance that it is common knowledge in describing an invention that parts not significantly related to the invention are not described in order to avoid confusion in explaining the present invention.

FIG. 1 is a flow chart of a method for manufacturing a low-loss gas building board utilizing synthetic zeolite according to the present invention.

As shown in FIG. 1, the present invention can prevent warping and cracking of a board while recycling industrial byproducts, and can reduce the harmful substances generated during the process as well as adsorption of lanthanum by utilizing synthetic zeolite This invention relates to a board for reducing lardin gas using synthetic zeolite and a manufacturing method thereof

First, the step S10 of producing the primary mixture is performed by adding 20 to 30 parts by weight of magnesium chloride to 100 parts by weight of the magnesia cement.

Magnesia cement is composed of magnesium oxide as a main component, and it is advantageous in that it hardens in a short period of time and hardly solidifies once hardened or cured.

The magnesium chloride is used as a curing agent so that a large number of fine pores are generated by reaction with magnesium oxide of magnesia cement. The magnesium chloride may be added in an amount of 20 to 30 parts by weight, preferably 25 parts by weight.

In addition, magnesium oxide and magnesium chloride form a needle-like hydrate in the reaction. Such needle-shaped hydrate tangles with each other, thereby making the structure dense and enhancing the strength.

The step S20 of producing the secondary mixture is performed by adding 20 to 30 parts by weight of the adsorbent to 100 parts by weight of the magnesia cement to the primary mixture.

Preferably, the adsorbent is synthetic zeolite based on magnesia cement and having porous properties.

Natural zeolites, like feldspar, form a three-dimensional skeleton structure with (apical oxygen) tetrahedral (Si, Al) O4, but have pores and water molecules and exchangeable cations. , Which is composed of pores of up to 50% of the total volume.

In the case of the synthetic zeolite (13X, 4A) of the present invention, silica and alumina composed of a mixture of alkali, water, and organic substances are slowly crystallized. In addition to the advantages of natural zeolite, Adsorption property.

The chemical composition ratios of natural zeolite and synthetic zeolite are shown in Table 1 below.

Element Al (Al ₂ O ₃₎ Si (SiO ₂₎ Fe P K Ca Ti (TiO ₂₎ Zeolite
(natural) 10.60 47.02 37.70 0.41 0.94 1.21 - Zeolite (13X) 40.5 58.3 - 1.05 0.0166 0.0166 0.0073 Zeolite
(4A) 43.5 54.9 - 1.13 0.0136 0.0136 0.0097

As shown in Table 1, the synthetic zeolite (13X, 4A) of the present invention is not shown in Table 1, but a minute amount of Fe may remain.

Further, the synthetic zeolite (13X, 4A) of the present invention replaces the Fe component in comparison with the natural zeolite to increase the aluminum component, thereby effectively increasing the adsorption performance.

In addition, the Ti component in [Table 1] is detected when TiO ₂ crystallizes, and iO ₂ primarily generates e- (electron) and h- (hole) by reaction with ultraviolet (O ₃ ) The electron (e) and h + (hole) react with TiO ₂ , respectively, O ₂ - OH -, and finally, the inflow air can be cleaned, oxidized, sterilized, and deodorized.

On the other hand, the step S30 of producing the tertiary mixture is performed by adding 8 to 12 parts by weight of industrial by-products such as fly ash or blast furnace slag to the secondary mixture with respect to 100 parts by weight of the magnesia cement.

The industrial byproducts are used for the purpose of preventing warpage and cracking of the board and also for reducing the heat of hydration.

Step S40 for producing the fourth mixture is performed by adding 35 to 45 parts by weight of water to the third mixture with respect to 100 parts by weight of the magnesia cement.

In step S50, the quaternary mixture is cured by charging it into an autoclave. It is cured so as not to be adversely influenced by temperature, load, impact, damage, breakage or the like by putting a quarternary mixture in a high- The performance value can be maximized.

[Experimental Example 1]

* Compressive strength *

Fig. 2 shows the aging time (from the pouring of the concrete to the hardening of the concrete) of the board made by replacing the adsorbent with the synthetic zeolite (13X, 4A), OPC (Portland cement), diatomaceous earth and natural zeolite. Day, 7 days, 28 days, and so on.

As a result, compressive strengths were 13X zeolite - 20%> 4A zeolite - 20%> OPC> diatomaceous earth - 5%> natural zeolite - 20%, and the test board of 13X zeolite at 20 days , And the strength of the natural zeolite-60% test board was 3.54 MPa.

Especially, 13X and 4A zeolite showed higher compressive strength than other adsorbents. It is considered that the compressive strength is increased because synthetic zeolite contains a large amount of Si component as compared with other adsorbent materials.

[Experimental Example 2]

* Flexural strength *

FIG. 3 is a graph showing the bending strengths of the boards prepared by replacing the adsorbent with the synthetic zeolite (13X, 4A), OPC, diatomaceous earth, and natural zeolite at 3 days, 7 days, 28 days.

As a result, the flexural strength of 13X zeolite-20% and diatomite-5% was the best, and the strengths of OPC, 4A zeolite-20% and natural zeolite -20% were almost similar.

[Experimental Example 3]

* London *

FIG. 4 is a graph showing the results of lardon gas emission of a board manufactured by replacing an adsorbent with synthetic zeolite (13X, 4A), OPC, diatomaceous earth, and natural zeolite.

Here, the emission of lardon gas was measured on a 7-day scale using a lardon gas analyzer.

As a result, OPC without adsorbing material showed the highest lardon gas emission, and 13D zeolite> 4A zeolite> diatomaceous earth> natural zeolite> ceftinex> OPC showed ladon gassing performance.

Overall, the AVG (long-term average) and EPA (average concentration) of all the samples were higher than the ceiling tex, and the CUR (current average) was significantly reduced.

Especially, 13X and 4A zeolite exhibited excellent adsorption performance because of the nature of hydrogen ion pair formation of synthetic zeolite.

It should be noted that the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention so that various equivalents And variations are possible.

Claims (3)

Adding 10 to 30 parts by weight of magnesium chloride to 100 parts by weight of magnesia cement to produce a first mixture;
Adding 20 to 30 parts by weight of an adsorbent to 100 parts by weight of magnesia cement to the first mixture to produce a second mixture;
S30: adding 8 to 12 parts by weight of industrial by-products composed of fly ash or blast furnace slag to 100 parts by weight of magnesia cement to a second mixture to produce a third mixture;
S40: adding 35 to 45 parts by weight of water to 100 parts by weight of the magnesia cement to the third mixture to produce a fourth mixture;
And a step S50 in which the quaternary mixture is charged into a board-shaped autoclave and then cured and completed,
Wherein the adsorbent is composed of silica composed of a mixture containing at least one of alkali, water and organic matter and synthetic zeolite having slowly adsorbing properties due to the action of cations in the crystal structure,
The synthetic zeolite is composed of 40.5 to 43.5 wt% of aluminum, 54.9 to 58.3 wt% of silicon, 1.05 to 1.13 wt% of phosphorus, 0.0136 to 0.0166 wt% of potassium, 0.0136 to 0.0166 wt% of calcium, 0.0073 to 0.0097 wt% Wherein the synthetic zeolite is used as a raw material for the construction board.
delete A board for reducing lardin gas using a synthetic zeolite produced according to claim 1.

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