WO2005123614A1

WO2005123614A1 - Process for producing novel material with high functional capability from waste diatomaceous earth, and novel material with high functional capability from waste diatomaceous earth, and diatomaceous earth composition for building material utilizing such diatomaceous earth

Info

Publication number: WO2005123614A1
Application number: PCT/JP2005/002357
Authority: WO
Inventors: Masuaki Yamamoto
Original assignee: One Will Co., Ltd.
Priority date: 2004-06-17
Filing date: 2005-02-08
Publication date: 2005-12-29
Also published as: CN100534934C; CN1968901A; JP2007175556A

Abstract

There is provided a process for disposal of waste diatomaceous earth discharged from a filtration operation, etc. of various production plants, which process excels in handling easiness and in fuel cost for drying and realizes obtaining of high functional capability at low cost through, for example, holding and controlling of organic components, such as enzymes and yeasts, contained in waste diatomaceous earth and utilization of the functional capability thereof. Further, there is provided a diatomaceous earth composition for building containing a porous inorganic material such as fired diatomaceous earth and a cement for use as a coating material applied to panels, walls, etc. The composition is capable of preventing dew condensation, and is applicable without compulsory pressurization on a wood sheathing by means of coating roller, brush, spray coating, etc. Furthermore, the composition for building without exception is substantially from any color fade-out phenomenon due to coloring by natural soil grains. Still further, a certain effect of powerful photocatalyst redox reaction impact by titanium dioxide exposed to air on the decomposition of harmful pollutants of the atmospheric air is promising by causing the composition to contain a powdery porous inorganic mineral as a main component and titanium oxide as a pigment.

Description

Description Method of converting waste diatomaceous earth into a high-performance new material, high-performance new material using waste diatomaceous earth, and composition for diatomaceous earth building materials using diatomaceous earth

INDUSTRIAL APPLICABILITY The present invention is excellent in handling property, excellent in dry fuel consumption, and in organic waste components such as enzymes and yeast in waste diatomaceous earth in the disposal treatment of waste diatomaceous earth discharged from the filtration process of various manufacturing processes. Diatomaceous earth, as well as a method to convert waste diatomaceous earth into a high-performance new material that can obtain high functionality at a low cost, such as by utilizing the functions of remaining diatomaceous earth. The present invention relates to a diatomaceous earth composition used for building materials. Background art

Diatomaceous earth is used as a filter material in the filtration processes of various manufacturing facilities such as beer factories and soy sauce factories. For example, in a beer factory, hops are processed from barley wort to impart bitterness and aroma and fermented, and this is filtered through diatomaceous earth to produce beer.

Such diatomaceous earth becomes a sludge-like waste material (waste diatomaceous earth) that contains yeast cake and a large amount of water after use, and its disposal has been difficult. In general, landfill treatment is performed, but due to the large amount of water containing yeast cake, a large amount of water treatment and odor treatment had to be considered. Even incineration in a cement kiln requires a lot of energy because it contains a large amount of water. For this reason, waste diatomaceous earth has recently been dried, granulated, carbonized, and activated by high-temperature steam at 800 to 100 ° C or carbon dioxide gas curing, and used in addition to landfilling and incineration. Re-use is being considered.

On the other hand, building materials such as stucco, earth, wood, etc., which have a dew-preventing action, have been widely used as building materials for walls and the like in Japan and China because of the rainy and humid environment in the Ajia Monsin area. . However, recently, building materials with high durability, silence, airtightness, economy, etc. have come to be used more and more with the rise and density of buildings. Materials are frequently used.

However, these petroleum-based building materials have the disadvantage that they have poor anti-condensation properties and are not suitable for high-temperature and high-humidity environments.

Therefore, research on a traditional composition for a building material including a porous inorganic material has been actively conducted. For example, as seen in Japanese Patent Application Laid-Open No. Hei 8-49308, fire resistance, durability, heat resistance, heat retention, deodorant, sound deadening, economical efficiency, etc. are comparable to those of plaster-containing building materials. There is also a building material that has a dew condensation preventing effect. This plaster, cement such as white cement, a building material comprising a porous inorganic materials such as fired diatomaceous earth force ^s, cements 1 0-5 0 weight parts to plaster 1 0 0 parts by weight , A material containing 30 to 120 parts by weight of a porous inorganic material such as calcined diatomaceous earth is proposed. It has the same fire resistance, heat resistance, heat insulation, etc., as the material containing plaster, and has the effect of preventing dew condensation. It is described.

That is, in this embodiment, a required amount of a porous inorganic material such as cement and calcined diatomaceous earth was mixed and mixed with the plaster, and the mixture was kneaded with water and kneaded. Iron is applied to the material to make boards, panels, and walls.

The meaning of ironing by means of construction means that the kneaded material is forcibly applied to the ground on the base plate and leveled out. It is said that the garment is relatively small, and that fine powder hardly remains on the finished surface after drying, and the fine powder hardly adheres to consumers due to scattering to the surrounding environment.

However, depending on the composition of the composition, if the work is applied without applying pressure, that is, if the base material is finished using a means such as a brush, a painting roller, or a spray gun, the material during working may cause a dripping phenomenon and adherence to work clothes, The work was extremely poor, and the quality of the finished surface was inferior.

In addition, after drying, dust was left on the finished surface and scattered around, leaving a problem in living comfortably. In recent years, it has become common practice to use a general user to construct the surface of a board, panel, wall, etc. using a do-it-yourself method. In this case, the work of applying paint without applying pressure, that is, brushes, paint rollers, etc. However, since the use of a spray gun has become increasingly common, it has been found that there is a serious problem in that simply applying iron and applying pressure cannot withstand practical use.

In recent years, it has been pointed out that it is necessary to decompose and remove harmful chemicals and gases, such as formaldehyde, which is contained in adhesives for furniture and flooring and is diffused into the air.

On the other hand, used diatomaceous earth used in factories in the food industry, etc., instead of new diatomaceous earth, is generally entrusted to a waste disposal contractor and processed for a reasonable amount of time. It is sludge-like, containing organic matter such as yeast lees, and has various bad conditions, such as foul odor, sludge-like handling, difficulty in mold generation and corrosion. It is regarded as one of the wastes that disposal companies also want to avoid. For this reason, processing costs are increasing year by year, and this is a problem that production costs are being squeezed.

In addition, the reuse of waste diatomaceous earth by the activation treatment is not yet a technology that can be put to practical use, because the activation treatment is complicated and requires high-temperature treatment, which is too costly and time-consuming. It is.

The inventor of the present application has conducted intensive studies not only on the composition for building materials utilizing new diatomaceous earth but also on the effective treatment and effective utilization of waste diatomaceous earth as described above, and is easy to handle. Can be made into a solid state and can be used as a storable material that does not proliferate as germs or bacteria, can reduce odor, can perform these processes in a short process and at low cost, and is contained in waste diatomaceous earth such as enzymes and yeasts Utilizing organic components that can be used for various purposes, it has very good adsorption resolution of harmful chemicals such as formaldehyde. Focusing on these viewpoints, we have developed a completely new effective treatment of waste diatomaceous earth.

On the other hand, it has the advantages of the prior art such as durability, sound deadening, fire resistance, heat resistance, heat retention, deodorizing, economical efficiency, etc. It is possible to apply the base material without applying pressure even by means that does not apply pressure.There is almost no dripping phenomenon of the material during the work and no adhesion to the clothes of the workers. Almost no residue remaining, with even more humidity control and even more condensation prevention It is an object of the present invention to provide a diatomaceous earth composition for building materials which is excellent in action. Another object of the present invention is to provide a diatomaceous earth building composition capable of decomposing and removing harmful chemical substances such as formaldehyde and gas. Disclosure of the invention

The present invention has been made in order to achieve the above object.

1) As a method for converting waste diatomaceous earth into a high-performance new material, as described in claim 1, for treating sludge-like waste diatomaceous earth, quick lime (including calcined dolomite) as a main component is used for drying. It is characterized by the use of quicklime to evaporate and remove the water contained in the waste diatomaceous earth, and to achieve the drying treatment.

2) Further, as described in claim 2, in treating sludge-like waste diatomaceous earth, sludge-like limes (including calcined dolomite) as a main component for drying treatment are used. The water contained in the waste diatomaceous earth is removed by evaporation to achieve drying treatment, sterilization and detoxification of the sludge-like waste diatomaceous earth by the use of Arikari, and the sludge-like waste diatomite is contained in the waste diatomaceous earth with the drying treatment. It is characterized by remaining control over the functions of organic components such as yeasts and yeast.

3) In addition, as described in claim 3, quicklime is a drylime for dry treatment in which cement mineral, iron oxide, gypsum, zeolite, clay mineral, etc. are appropriately blended according to the type of waste diatomaceous earth. It is characterized by being classified.

4) In addition, as described in claim 4, a preliminary step of crushing and agitating the waste diatomaceous earth to squeeze out water and uniformly liquefying the waste diatomaceous earth to ascertain the water content, This process is characterized in that the process comprises the steps of: injecting quicklime for drying treatment corresponding to the moisture content, drying the waste diatomaceous earth;

5) As a new material using waste diatomaceous earth, as described in Claim 5, water is squeezed out by crushing and stirring the waste diatomaceous earth, and the sludge-like waste diatomaceous earth is uniformly liquefied to determine the amount of water contained. At the same time, it was confirmed that it had been dried using quicklime containing dry lime (including calcined dolomite) as a main component and sterilized and rendered harmless by alkali. Features.

6) Further, as described in claim 6, in treating sludge-like waste diatomaceous earth, sludge is formed by quicklime for drying treatment mainly containing quicklime (including calcined dolomite). The water contained in the waste diatomaceous earth is removed by evaporation to achieve drying treatment, the sterilization of the sludge-like waste diatomaceous earth by Arikari is carried out, and the sludge-like waste diatomite is contained in the waste diatomaceous earth with the drying treatment. It is characterized by remaining control of the functions of organic components such as enzymes and yeast.

7) Also, as described in claim 7, quicklime is a drylime for dry treatment in which cement mineral, iron oxide, gypsum, zeolite, clay mineral, etc. are appropriately blended according to the type of waste diatomaceous earth. It is characterized by being classified.

8) Next, as a composition for a diatomaceous earth building material, as described in claim 8, a composition for a diatomaceous earth building material mainly composed of powdered slaked lime, white cement, and powdered calcined white diatomaceous earth. In particular, powdery clay raw materials are blended in a required amount range.

9) As a composition for diatomaceous earth building materials, colored diatomaceous earth is blended in the required amount range to obtain ash-based colors, red or yellow-based colors. 10) It is characterized by containing titanium oxide as a pigment as a composition for a diatomaceous earth building material. BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the details of the present invention will be described based on a first embodiment, that is, a high-performance new material of waste diatomaceous earth.

The premise of the new method of turning waste diatomaceous earth, which is filtered waste material, into a new material is that the conventional treatment system for sludge diatomaceous earth that uses fuel has poor drying efficiency, increases energy consumption, and In consideration of the fact that the value of use is significantly reduced even if it can be recycled due to the high-temperature treatment system, conventional drying methods using fuel will not be adopted.

Therefore, the new material conversion method according to the present invention is a system that utilizes the heat of reaction with water and the bactericidal property of alkali as a system for treating sludge-like waste diatomaceous earth. That is, quicklime (including dolomite) that generates high heat of reaction when it reacts with water, waste diatoms Depending on the type of soil, cement minerals, iron oxide that generates heat by reacting with air, and other auxiliary materials such as gypsum and zeolite are blended and used as quicklime for drying treatment. Using the quicklime for drying treatment, the water in the sludge-like waste diatomaceous earth is evaporated and removed, while the remaining organic components such as enzymes and yeasts in the waste diatomaceous earth are controlled while remaining. Diatomite is sterilized and rendered harmless.

In order to maximize the function of these quick-drying limes, the new materialization system is divided into a pre-treatment process and a main process. In the pretreatment process, in order to make sludge-like or cake-like waste diatomaceous earth easily react with quicklime for drying treatment, quicklime reacts with moisture to increase the heat of reaction (heat of reaction of quicklime, 278 Kca1). / K g), the water content in waste diatomaceous earth should be ascertained, and the extraction of water based on it should be an important issue.

For this reason, it is necessary to sufficiently stir the waste diatomaceous earth with a mixer, etc. as a pretreatment, and to liquefy the waste diatomaceous earth uniformly. Generally, hydrated diatomaceous earth contains a large amount of water in pores in addition to attached water, and extraction of this water is important. In this method, it is strongly required to sufficiently extract and utilize the water contained in the pores.

After determining the water content, determine the amount of quicklime to be blended in the next process. Determining the amount of quicklime to be used for the drying treatment in accordance with the water content of the waste diatomaceous earth is a very important issue in the system of the new material according to the present invention.

Next, in this process, the waste diatomaceous earth, in which the crushing and stirring of the waste diatomite was completed in the previous process and the water was sufficiently squeezed out, was mainly made of quicklime, which has a high heat of reaction and can be obtained relatively inexpensively. Depending on the type of waste diatomaceous earth, a powder (quick lime for drying treatment), which is appropriately blended with auxiliary materials such as cement minerals, iron oxide, gypsum, and zeolite, is mixed and stirred.

The amount of quicklime for drying treatment is determined in the range of 10% to 50% of waste diatomaceous earth by weight, taking into account the amount of water extracted from waste diatomaceous earth. It is preferable that the stirring be performed in a short time of about 5 to 10 minutes. After completion of the stirring, the mixture is gently cured, and the time is preferably about 30 minutes. During curing, the temperature inside the waste diatomaceous earth rises rapidly, the moisture emanates from the surface as water vapor, and the waste silica thin earth becomes dry powder. It becomes dry and dry, and sterilization treatment with alkali is performed at the same time. In this process, in order to efficiently dewater, dry, and sterilize waste diatomaceous earth, the squeezing of water and the curing time are required. This is a very important factor.

The dried diatomaceous earth, which has been further dried and turned into powder, is regenerated at low cost and is rendered harmless and highly functional. Therefore, the wall material patent No. 3 owned by the applicant of the present invention, One Will Co., Ltd. The quality performance can be greatly improved by adding to No. 358 026. There are many other uses besides wall materials, such as building materials, weed control, insect repellents, antibacterial balls, water retention, lightweight aggregates, rooftop greening panels, paddy rice fertilizers, soil conditioners, and daily necessities. Depending on the situation, it can be recycled. In addition, it can be developed in the agricultural and food fields, which are highly functional due to the remaining enzymes and yeast. In any case, according to the present invention, when waste diatomaceous earth is disposed of, the waste diatomaceous earth is dried at a low cost by using the reaction heat between the water contained in the waste diatomaceous earth and the quick lime without using a fuel, and the wastewater is treated with alkali. By sterilizing and detoxifying, low-cost raw materials in many fields such as building materials, weed control, insect repellents, antibacterial balls, water retention materials, lightweight aggregates, rooftop greening panels, paddy rice fertilizers, soil improvers, and daily necessities. Reuse and recycle resources according to the purpose, and use them effectively.

Depending on the type of waste diatomaceous earth, other auxiliary materials are added to the quicklime as the main material as appropriate, and the waste diatomaceous earth is dried to achieve high functionality efficiently. That is, the functions of organic components such as enzymes and yeasts contained in the waste diatomaceous earth can be remaining controlled, and high functionality can be achieved by utilizing the remaining enzymes, such as yeast. For example, it adds high functionality with enhanced adsorption resolution of harmful chemicals such as formaldehyde. Waste diatomaceous earth after soy sauce filtration is said to be the most difficult to treat because it contains 10-15% salt and 50-60% moisture. At food processing plants, this waste diatomaceous earth is washed, dehydrated, and treated in a straightforward manner. However, the cost is high and there are problems with water treatment. An application example of the materializing method according to the present invention will be described.

First, in the previous step, the waste diatomaceous earth was stirred for about 20 minutes with a mixer that could control the number of revolutions, and the water adhering to the diatomaceous earth and the water in the pores were squeezed out onto the surface. 0.000 cm SZ g) 30% by weight of soft burnt lime powder was added and stirred for about 5 minutes. After that, it was solidified and cured for about 30 minutes.

The temperature inside the waste diatomaceous earth reaches around 90 degrees after 30 minutes, and the sludge-like waste diatomite is The diatomaceous earth that can be stored was reclaimed. The odor was also significantly reduced, and it could be used as diatomaceous earth for building materials.

Kanagawa Prefectural Institute of Industrial Science shows that the presence of an organic substance with a controlled amount remaining in the fine porosity of the waste diatomaceous earth causes the organic substance to act, resulting in extremely high formaldehyde adsorption resolution. (16.5.24). The results of the analysis are shown below.

ρ¾ fee

4 hours later

(With new diatomaceous earth)

Keiso-Pun 0 ppm or less 0.02 ppm or less

(With waste diatomaceous earth)

Keiso-kun

10% (47 g) contamination 0 0 5 p pm or less Almost 0 value

30% (47 g) contamination

0 0 6 ppm or less Almost 0 value It can be understood from this analysis result that Keiso-kun mixed with dried waste diatomaceous earth with residual control of organic components contained almost no formaldehyde after 4 hours compared to the conventional new Keiso-kun. If not detected, it showed a higher adsorptive decomposition ability.

The formaldehyde adsorption resolution varies slightly depending on the drying time, thickness, physical adsorption degree of the surface condition, etc., but in any case, it has excellent formaldehyde adsorption and decomposition ability.

Waste diatomaceous earth contains many organic substances. For example, in the case of yeast, there are various organic components such as polyols, carboxylic acids, and sulfonic acids, in which N (nitrogen) is high. This NH ² (amino group) converts formaldehyde (HCHO) to methylol and converts it into another substance. Also, because formaldehyde is compatible with urea (urea), it is thought that it reacts with urea (urea) and changes harmlessly.

In this way, by controlling the organic components contained in the waste diatomaceous earth in this way, in this case, it is possible to obtain an effective new material with excellent gas adsorption resolution. You can.

The above-mentioned method for reducing formaldehyde is as follows. A sample (dried material coated on a glass plate, thickness: 4 mm, area: 150 cm ² ) is placed almost in the center of a glass container (vacuum desiccator / 12 L). After setting, depressurize the inside of the container and fill it with formaldehyde adjusted air. The sample is allowed to stand still, air in the container is collected for a certain period of time, and the concentration in the air is measured. The exposure to formaldehyde was performed at an initial concentration of 2.5 ppm, at a temperature of 20 ° C and a humidity of 50%. Next, a diatomaceous earth composition for a building material will be described based on a second example.

As is well known, powdered slaked lime is obtained by baking limestone, oysters, and other shells at 900 to 1200 ° C and digesting them with water, and is in the form of a white powder. In the present invention, various materials such as slaked lime for plasterers can be used. When this is applied to boards, panels, walls, etc. in the composition for building materials of the present invention, the material is cured as well as the absorbing and releasing material. Functions as a material. In the present invention, this is 100 parts by weight and other components are blended as described above.

White cement (Portland cement) functions as a hardening agent, and is mixed in a range of 80 to 90 parts by weight with respect to 100 parts by weight of powdered slaked lime. Parts by weight are preferred.

The calcined white silica thin earth has an excellent dew condensation preventing action among diatomaceous earths. This porous tissue absorbs moisture into the porous tissue when the humidity in the building space is high, and releases moisture from the porous tissue into the space when the humidity in the building space is low, resulting in optimal humidity. It plays a role in providing an environment. A force S blended with 50 to 60 parts by weight with respect to 100 parts by weight of powdered slaked lime, preferably 55 parts by weight is suitable.

Thus, in the present invention, the ratio of the powdered slaked lime, the white cement, and the calcined white diatomaceous earth, rather than the individual functions of the powdered slaked lime, was 100 parts by weight, and the white cement was 8 parts by weight. Using a building material composition containing 0 to 90 parts by weight and 50 to 60 parts by weight of powdered calcined white diatomaceous earth, it was installed on the ceiling or wall of a living space, and the humidity of the room was about 50 to 60%. % Was confirmed to be maintained.

Next, what is important in the present invention is to use a powdery viscous raw material. This place In this case, clay raw materials are composed of fine minerals, and show plasticity when water is added. Therefore, although the main component is clay mineral, it may contain some non-clay mineral.

Preferably, it is a crystalline clay mineral and sepiolite powder having a double chain structure, but bentonite may be used.

In the case of the above bentonite, the main component includes not only montmorillonite as a clay mineral but also quartz or fine-grained crystal pallite as a silica mineral. Also, zeolite that excels in antibacterial properties may be used.

This powdery clay material is blended in the range of 11 to 67 parts by weight. With this formulation, the inventor attempted several experiments.

That is, 100 to 90 parts by weight of powdered slaked lime, 80 to 90 parts by weight of white cement, 50 to 60 parts by weight of powdered calcined white diatomaceous earth, powdered acryl resin as an auxiliary, Conditions when water is added 1.3 times when the total weight of the defoamer is 3 and 3 parts by weight and the total amount of powdered clay material is 1 (the total weight of the composition for building materials is 1). Sepiolite (made by Showa Mining Co., Ltd .: Milcon) was used as the clay raw material in an amount of 10 parts by weight or less, 11 to 67 parts by weight, and 68 parts by weight or more. At less than 10 parts by weight, a large dripping was observed when applied with a brush or a painting roller. Since sepiolite is generally clayey, it is assumed that the more it is, the more sticky it will be, and that there will be no sagging when painting with a brush or painting roller. When mixed, dripping was observed. Desirably, when 45 to 55 parts by weight was blended, no dripping was observed.

This means that the mixing ratio was almost the same even when the total weight of the architectural composition was set to 1 without mixing the soot and twice as much water was mixed. In addition, when the total weight of the composition for building materials is set to 1, and 0.7 to 1.0 times water is added to the composition and sprayed on the base material, the ratio of the sepiolite powder is similarly set to 11 to 1 If it was within the range of 67 parts by weight, it did not sag.

When I tried bentonite, similar results were obtained. It was confirmed that the particle diameter of both sepiolite and bentonite was 0.5 mm or less, preferably 0.2 mm. After all, since this invention contains powdered slaked lime and powdered calcined white silica thin earth, it is as durable, sound-deadening, fire-resistant, heat-resistant, heat-retaining, deodorant, antibacterial, and economically as the conventional products. It contains 100 to 90 parts by weight of powdered slaked lime, and contains 80 to 90 parts by weight of white cement and 50 to 60 parts by weight of powdered sintered white silica earth. Also, due to the porous structure of the powdered calcined white diatomaceous earth, the humidity control effect is more effectively exerted, and an effective dew condensation preventing effect is obtained. Because of its stickiness, even if it is spray-painted with a brush, roller, or spray gun, it does not cause sagging during painting.

That is, these coating means do not apply pressure to the surface, and therefore do not require skill, and are suitable for forming a surface material on a board, panel, wall, or the like for a DIY work. However, according to the present invention, such a coating method does not cause sagging, facilitates the coating operation, and can form a surface layer having a good deodorizing and humidity controlling effect. However, white fine powder remains on the surface layer, and there is almost no phenomenon of scattering to the surrounding environment.

Further, in the present invention, a small amount of powdered acryl resin can be blended. This is to ensure the adhesion to the base material when the mixture of water of the composition for building materials according to the present invention is applied to the base material, and it is desirable to mix 6 to 7 parts by weight.

Metrose is also blended in order to intentionally slow down the painting work in high humidity conditions in summer to prevent surface cracking and improve adhesion to brushes and rollers. And 4 to 6 parts by weight.

In addition, an antifoaming agent is added. This is to eliminate foam on the painted surface generated by brush, roller, and spray coating, and it is desirable to add 1 to 2 parts by weight.

The surface layer formed by using the composition for building materials according to the present invention is based on white, but if about 12 parts by weight of diatomaceous dry diatomaceous earth is blended, it can exhibit an ash-based color, Or, if about 12 parts by weight of red diatomaceous earth is added, red can be exhibited, or if 5 to 6 parts by weight of Chinese loess is added, yellow can be added. As described above, all of the colors are caused by natural soil grains, so that the fading phenomenon hardly occurs.

Further, since the building composition according to the present invention contains a porous inorganic mineral as a main component, harmful substances such as formaldehyde and gas diffused in the indoor air are removed. Adsorption can be decomposed. Since titanium oxide is used as the pigment in the paint, this titanium oxide becomes titanium dioxide when it comes into contact with air, and is degraded by the strong oxidation-reduction effect of the photocatalyst to decompose harmful pollutants in the atmosphere. A certain effect can be expected.

Conventionally, the relationship between titanium dioxide and photocatalyst has been pointed out as follows. In other words, in the case of photosynthesis, chlorophyll is used as a catalyst to produce oxygen from water and carbon dioxide using light energy. In the case of a photocatalyst, a photocatalytic semiconductor metal such as titanium dioxide (TI02) is used as a catalyst. It has been pointed out that light energy (ultraviolet rays) is used to create active oxygen (02-) and free radical (OH-) negative ions from water (H20) and oxygen (O2) in the air.

Since active oxygen has strong and oxidizing power, it is known to decompose and remove harmful substances such as organic compounds and bacteria that cause soiling, and offensive odors. Substances such as decomposed dirt are washed away by rain and so on, and are said to have a self-cleaning effect. In any case, the redox reaction of the photocatalyst decomposes the harmful pollutants in the atmosphere, nitrogen oxides (NO x) and sulfur oxides (SO x), and purifies the surrounding air. In some cases, such as soundproof fences on roads, etc., are being introduced to improve the environment. For example, the weight ratio of titanium dioxide and ceramic is as follows. Titanium dioxide: ceramic = 5 to 40: 60 to 95, preferably 10 to 30: 70 to 90. If the content of titanium dioxide is less than 5% by weight, the effect may not be exhibited. If the content exceeds 40% by weight, there is no difference in the effect, and a value of about 40% by weight may be suitable.

When the auxiliary agent is blended as described below, the powdery acrylic agent that promotes adhesion to the base material is included in 6 to 7 parts by weight. In addition to ensuring adhesiveness, it contains 4 to 6 parts by weight of a water-soluble nonionic cellulose ester as a water-retention thickener, so it is possible to intentionally slow down the coating work and prevent surface cracking. In addition, since 1 to 2 parts by weight of an antifoaming agent is contained, no foam is generated on the painted surface even when applying a brush, a roller, or spray painting without applying pressure.

In addition, since there is no white powder remaining on the painted surface, there is an advantage that there is no scattering to the surrounding environment. In addition, it has the advantage of being superior in deodorizing effect. Examples and test examples are listed below.

[Example 1]

Powdered slaked lime (Yoshizawa Lime Industry Co., Ltd.) 9 Kg, white cement 8 Kg, calcined white Yamato (Kitaaki diatomaceous earth Co., Ltd.) 5 Kg, 0.2 mm particle size sepiolite (Showa Mining) 5 Kg was mixed to prepare a composition for building materials. Further, in order to enhance the adhesiveness of the building material composition to the base material, 0.6 kg of acrylyl powder non-resin (trade name: Acryl powder A100000, manufactured by Hoechst Gosei Co., Ltd.) was added. 0.4 kg of a powder (Shin-Etsu SH 30000 FD, manufactured by Shin-Etsu Chemical Co., Ltd.) and 0.15 K g of a defoamer (SN- 14 HB, manufactured by Sannobuco Co., Ltd.) Mixed. To 6.15 kg of this composition for building materials, 3.6.595 liters of water was added and kneaded. Then, a 30 × 30 cm plus turbo was brush-coated. The above coating was performed only once with a thickness of about 0.5 mm for undercoating, and only once with a thickness of about 2 mm for topcoating. Then, it was left at room temperature and completely cured in one day to form a 30 × 30 cm wall.

There was no dripping phenomenon during the work. After curing, there was no trace of fine powder on the surface and no scattering of white powder was observed. And the water absorption rate was 60% or more of the white weight.

[Example 2]

To the composition for building materials of Example 2 above, ± 0.5 kg of Chinese loess was further added, and kneading was performed by adding 37.245 liters of water to a total weight of 28.65 kg. Then, a paint roller was applied to a 30 × 330 cm plus turbocharger. The above coat was about 0.5 mm thick for the undercoat, and about 2 mm thick for the top coat. I Allowed to stand at normal temperature and cured to create a 30 x 30 cm wall.

The appearance was slightly yellow, and as in Example 2, there was almost no dripping phenomenon during work, no scattering of white powder, and no adhesion to work clothes. The water absorption was 60% or more of the white weight. It was possible to secure wall panels with good humidity control.

[Embodiment 3]

1 kg of dry diatomaceous earth was further added to the building material composition of Example 2 described above, and 29 liters of water was added to a total weight of 29.15 kg, followed by kneading. Then, it was sprayed on a 30 × 30 cm plaster board. The above spraying is about 0.5mm thick underlayer, surface The thickness was about 2 mm. 1 Leave at room temperature and cure to create a 30 x 30 cm wall.

The appearance was slightly gray, and as in Example 2, there was almost no dripping phenomenon during work and no scattering of white powder, and there was no adhesion to work clothes. The water absorption was 65% or more of the white weight, and it was possible to obtain a wall plate having a good humidity control and humidity control effect.

[Example 4]

In place of sepiolite in the composition for building materials of Example 2 above, 5 kg of bentonite was used, 1 kg of red diatomaceous earth was further added, and water was added to the total weight of 29.15 kg with 7.895 litter addition force and kneading. did. Then, a coating roller was applied to a mouth on a 30 × 30 cm plaster board. The above coat was about 0.5 mm thick for the undercoat, and about 2 mm thick for the top coat. 1 Allowed to stand at normal temperature and cured to create a 30 x 30 cm wall. The appearance was slightly red, and as in Example 2, there was almost no dripping phenomenon during work and no scattering of white powder, and there was no adhesion to work clothes. The water absorption was 63% or more of the white weight, and it was possible to obtain a wall board having a good moisture control layer on the cloth.

[Comparative Example 1]

Plaster <Komagata Lime Industry Co., Ltd .: Remitacco> 11.0 kg, white cement 2. OKg, perlite 1. 75 kg, calcined diatomaceous earth 6. O OKg, and then 0.15 kg of krill powder resin After mixing, 20 liters of water was added and kneaded, brush coating was performed on a 30 × 30 cm plaster board.

During work, sagging occurred, the surface became uneven, and after leaving it to stand at room temperature for one day, white powder adhered to hands and clothes, making it impractical and significantly reducing its commercial value.

[Comparative Example 2]

Powdered slaked lime (Yoshizawa Lime Industry Co., Ltd.) 9 kg, white cement 8 kg, calcined white diatomaceous earth (Kitaaki diatomaceous earth Co., Ltd.) 5 kg, sepiolite with a particle size of 0.2 mm <Showa Mining Co., Ltd .: Milcon> 1 Kg was mixed to prepare a composition for building materials. Furthermore, in order to enhance the adhesiveness of the building material composition to the base material, 0.5 kg of an acrylic powder resin (trade name: Acryl Powder A 1000, manufactured by Hext Synthetic Co., Ltd.) A product of Shin-Etsu Chemical Co., Ltd .: trade name Shin-Etsu SH 30000 FD) 0.4 kg and a defoamer (manufactured by Sannobuco Co., Ltd .: trade name SN-14HB) were mixed with 0.15 kg. This 31.265 liters of water was added to 24.05 kg of the composition for a building material, and kneaded. Then, a 30 × 30 cm plaster board was brush-coated. The above coating was performed only once with a thickness of about 0.5 mm for undercoating and only once with a thickness of 2 mm for scooping. Then, it was left at room temperature and completely cured in one day to form a 30 × 30 cm wall.

During the work, a large dripping phenomenon occurred, the surface was uneven, and after the curing, white powder was left on the surface, and scattering of the white powder was observed.

[Comparative Example 3]

Powdered slaked lime <Made by Yoshizawa Lime Industry Co., Ltd.> 9 kg, white cement 8 kg, calcined white diatomaceous earth (manufactured by Kitaaki Diatomaceous Earth Co., Ltd.) 5 kg, mixed with 7.5 kg of bentonite having a particle size of 0.2 mm I adjusted things. Furthermore, in order to improve the adhesion of the composition for building materials to the base material, 0.5 kg of acrylic powder resin (manufactured by Hex Synthetic Co., Ltd .: trade name: Ataryl Powder A1000) and metrose (Shin-Etsu Chemical Co., Ltd.) 0.1 kg of an antifoaming agent (trade name: SN-14HB, manufactured by Sannobuco) was mixed with 0.4 kg. To 30.55 Kg of this building material composition, 39.715 liters of water was added and kneaded. Then, a 30 × 30 cm lath board was painted with a coating roller. The above coating was performed only once with a thickness of about 0.5 mm for the undercoat and only once with a thickness of about 2 mm for the top coating. Then, it was left at room temperature and completely cured for one day to create a 30 x 30 cm wall.

During work, a dripping phenomenon was observed and adhered to work clothes. After curing, there were traces of fine powder on the surface, and white powder was found to have been lost. The invention's effect

As described above, according to the present invention,

1) According to the invention described in claim 1, waste diatomaceous earth containing waste diatomaceous earth without using fuel is mainly used for disposal of waste diatomaceous earth, which had conventionally only been landfilled or incinerated with high fuel efficiency. Utilizing the heat of reaction between water and quicklime, waste diatomaceous earth can be dried at a low cost and sterilized and rendered harmless by using a powerful method.

Therefore, it is possible to provide an effective treatment method for the disposal of waste diatomaceous earth, which has seen a deadlock in recent years, and to use waste diatomaceous earth for building materials, weed control, insect repellent, antibacterial balls, and preservation. It can be used as a raw material in many fields such as water materials, lightweight aggregates, rooftop greening panels, paddy rice fertilizers, soil conditioners, daily necessities, etc. For example, multiple functions can be provided.

2) According to the invention described in claim 2, in addition to the effects of the invention described in claim 1, the organic components such as enzymes and yeast contained in the waste diatomaceous earth are possessed. One of these functions is to control the remaining functions and to add high functionality with improved adsorption resolution of harmful chemicals such as formaldehyde. By doing so, it can be further expanded to the agricultural and food fields.

3) According to the invention described in claim 3, in addition to the effects of the invention described in claim 1 or claim 2, it depends on the type of waste diatomaceous earth. In addition, other auxiliary materials can be added to the quicklime of the main material for regeneration.

4) According to the invention described in claim 4, according to claim 1 and claim 2, the effect of the invention described in claim 3 is reduced. In addition, drying treatment of waste diatomaceous earth can be performed with good controllability.

5) According to the invention described in claim 5, the waste diatomaceous earth is dried at low cost by utilizing the reaction heat between the water contained in the waste diatomaceous earth and the quick lime without using a fuel. Sterilized and detoxified by Lucari, waste diatomaceous earth is used as a raw material in many fields such as building materials, weed control, insect repellents, antibacterial balls, water retention materials, lightweight aggregates, rooftop greening panels, paddy rice fertilizers, soil conditioners, household goods, etc. The new material can be re-used at low cost and re-used for effective use.

6) According to the invention set forth in claim 6, in addition to the effects of the invention set forth in claim 5, in addition to the functions of organic components such as enzymes and yeast contained in waste diatomaceous earth, Providing low-cost new materials with high functionality by increasing the ability to adsorb harmful chemicals such as formaldehyde, for example, by utilizing the remaining enzymes, yeast, etc. be able to.

7) According to the invention described in claim 7, in addition to the effect of the invention described in claim 5 or claim 6, the drying treatment of waste diatomaceous earth is controlled. Can be performed sexually.

8) According to the invention described in claim 8, powdered slaked lime, powdered calcined white Since it contains colored diatomaceous earth, it has durability, sound deadening properties, fire resistance, heat resistance, deodorizing properties, sealing properties, economical efficiency, etc., while improving the humidity control properties and improving the porous structure of the powdered fired white diatomaceous earth. The humidity control action can be exhibited more effectively, and an effective dew condensation prevention action can be obtained. Because the required amount of powdered clay material is blended, due to its stickiness, it can be applied not only when applying pressure like a conventional iron, but also with a brush, roller or spray gun that does not apply pressure. However, there is an advantage that sagging does not occur during painting work.

For this reason, even in the DIY work that does not require heat kneading, the workability is superior, and the versatility of this type of building material composition is improved.

In addition, since there is no white powder remaining on the painted surface, there is an advantage that there is no scattering to the surrounding environment. In addition, it has the advantage of being superior in deodorizing effect.

Therefore, even in the DIY work of amateurs who do not have the skill of skilled workers, it is possible to apply paint that has humidity control and deodorant effects to walls and the like with good workability without causing sagging. it can.

9) According to the invention described in claim 9, in addition to the effect of the invention described in claim 8, the formed surface layer is based on white but contains naturally dried diatomaceous earth. If it is mixed with red diatomaceous earth, it will give a red color, and if it contains Chinese loess, it will give a yellow color. In each case, the coloration is caused by natural soil grains, so there is almost no fading phenomenon.

10) According to the invention described in claim 10, in addition to the effect of the invention described in claim 8, the powdery clayey material contains titanium oxide as a pigment. Therefore, a certain effect can be expected for the decomposition of harmful pollutants in the atmosphere by the strong oxidation-reduction reaction effect of the photocatalyst by titanium dioxide exposed to air.

Claims

The scope of the claims

1) When treating sludge-like waste diatomaceous earth, water contained in sludge-like waste diatomaceous earth is removed by evaporation using quicklime containing dry lime (including calcined dolomite) as a main component.

(5) A method for converting waste diatomaceous earth into a high-performance new material, characterized by drying and sterilizing the slime-like waste diatomaceous earth with Arikari.

2) When treating sludge-like waste diatomaceous earth, quicklime containing dry lime (including calcined dolomite) as a main component is used to evaporate and remove water contained in sludge-like waste diatomaceous earth. Sterilization and detoxification of waste diatomaceous earth, and remaining control of the functions of organic components such as enzymes and yeasts contained in waste diatomaceous earth accompanying the drying treatment of waste diatomaceous earth. 3. The method for converting a waste diatomaceous earth into a high-performance new material according to claim 2, which is characterized in that:

3) The quicklime is a quicklime that is obtained by blending cement minerals, iron oxide, gypsum, zeolite, clay mineral, etc. according to the type of waste diatomaceous earth, and is used as a drylime for the dry treatment. 2. A method for converting waste diatomaceous earth into a highly functional new material as described in 2.

4) Disintegrate and agitate the waste diatomaceous earth to squeeze out water, uniformly liquefy the waste diatomaceous earth and determine the water content, and add dry lime suitable for the determined water content. Claims 1, 2 or 3 characterized in that this process comprises a drying process of the waste diatomaceous earth and a sterilization treatment by an aerial liquor. Method.

5) Waste water is squeezed out by crushing and stirring waste diatomaceous earth, and the sludge-like waste diatomaceous earth is uniformly liquefied to determine the water content, and quicklime containing dry lime (including calcined dolomite) as a main component. A high-performance new material made of waste diatomaceous earth, characterized by being dried by a kind and sterilized and rendered harmless by an alkali.

6) When treating sludge-like waste diatomaceous earth, quicklime containing dry lime (including calcined dolomite) as a main component is used to evaporate and remove water contained in sludge-like waste diatomaceous earth. Sterilization and detoxification of waste diatomaceous earth by alkali, and remaining control of the functions of organic components such as yeast contained in waste diatomaceous earth due to drying treatment of waste diatomaceous earth Claims characterized by that Highly functional new material made from waste diatomaceous earth described in range 5.

7) The quicklime is a quicklime which is prepared by appropriately blending cement mineral, iron oxide, gypsum, zeolite, clay mineral, etc. according to the type of waste diatomaceous earth. Or Highly functional new material using waste diatomaceous earth described in 6.

8) A composition for building materials comprising powdered slaked lime, white cement, and powdered calcined white diatomaceous earth as main components, and in particular, a powdered clay raw material is compounded in a required amount. 9. The composition for a diatomaceous earth building material according to the eighth aspect.

9) The diatom according to claim 8, wherein the diatomaceous earth is blended in a necessary amount with the building material composition to obtain a ash-based color, a red color, or a yellow-based color. Compositions for soil building materials.

10) The composition for diatomaceous earth according to claim 8 or 9, wherein the composition for building material contains titanium oxide as a pigment.