KR20160143441A - Building material by granite sludge and Manufacturing method thereof - Google Patents

Abstract

The present invention provides a building material having granite sludge and a manufacturing method thereof, wherein after soil is mixed with paper mash to make a base material and granite sludge is added to the base material to make a granite mixture, a building material is manufactured by molding and plasticizing the granite mixture to be an object to be processed. As such, the building material has excellent strength, wherein various colors are able to be displayed on an external surface.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to granular sludge,

The present invention relates to a building material including granite sludge and a method of manufacturing the granular sludge. More specifically, the granular sludge is mixed with earth to make a base material, granular sludge is added to the base material, And granular sludge capable of exhibiting various colors on the surface, and a method of manufacturing the same. 2. Description of the Related Art

Generally, building interior and exterior materials are made of brick and earth or porcelain. However, the building material made of the above materials has a weak strength and cracks during use for a long time, resulting in poor durability, and it is difficult to coat various colors on the surface due to the characteristics of the material.

On the other hand, granite is a building material having high durability. The granite is made up of about 25% of the nation's national land. In order to use it as a building material, the stone is sliced by a cutting device. Due to the nature of the material, it is difficult to produce a heavy and small standard, .

When the granite is cut or polished in a granite processing plant, a considerable amount of sludge is generated. Generally, the amount of sludge generated in a granite processing plant is one third or more of the raw stones used in the processing, The amount of water is about 20 to 30 times that of the final stone product, which causes a problem that a large amount of by-products are generated.

Such granite sludge causes environmental destruction, so it is categorized as a specific waste and disposed of. When disposal and disposal are carried out, a high cost of 5 to 100 thousand won per ton is generated. In some granite processing plants, granite sludge is not discarded There are many cases where the environment is damaged or polluted due to neglect or harassment.

Therefore, recycling granite sludge as a building material can greatly reduce not only economic value but also sludge landfill / disposal throughput, and a new method is needed.

Korean Patent Laid-Open Publication No. 10-2003-0083981

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a granite sludge which is produced in cutting and polishing granite in a granite processing process while enhancing strength of a building material and displaying various colors on a surface thereof. The present invention provides a building material including granular sludge which can be recycled as a raw material and a manufacturing method thereof.

A method of manufacturing a building material including granular sludge according to the present invention comprises: a primary mixing step of mixing a mixture of water and soil with 60 to 99% by weight of paper to prepare a base material; A second mixing step of mixing 10 to 50 wt% of granite fine powder with respect to 100 wt% of the base material to prepare a granite mixture; Molding the granite mixture into a shaped body; And firing the processed body at 850 to 1280 캜; Wherein the second mixing step comprises placing the granite sludge in a settling tank and allowing it to settle for 10 to 24 hours; And removing the supernatant from the sedimentation tank, collecting the granite sediment submerged in the bottom of the sedimentation tank and drying it to obtain a granular fine powder and mixing it with the base material; And further comprising:

According to a preferred aspect of the present invention, in the primary mixing step, 50 to 99% by weight of paper is dissolved in water, stirred for 5 minutes to 1 hour, passed through a sieve, May be mixed and dried to prepare a base material.

According to a preferred feature of the present invention, the base material may be prepared by drying the paper jug first and then mixing the clay with the powder.

According to a preferred feature of the present invention, the base material may be prepared by first mixing diluted clay in a rice husk, followed by drying.

According to a preferred aspect of the present invention, the primary mixing step may further include adding pigment to the base material to impart color.

According to a preferred aspect of the present invention, the method may further include a step of applying a glaze to the surface of the processed body after the firing step and performing secondary firing.

According to a preferred feature of the present invention, in the secondary mixing step, the granite mixture may be prepared by further mixing 5 to 30 wt% of basalt sludge with 100 wt% of the base material.

Further, the building material including the granite sludge according to the present invention is manufactured by one of the above-mentioned manufacturing methods.

According to the embodiment of the present invention, a considerable amount of granite sludge that is discarded as waste material in the granite cutting and polishing process in the granite processing step is recycled as a raw material for building material, thereby preventing resource waste and environmental destruction, The cost of the building material can be reduced by reducing the purchase cost.

In addition, since the building material of the present embodiment is made of earth, paper and granite sludge, which are natural materials, harmful to the environment is not only eco-friendly but also has a natural texture, and the surface can be expressed in various colors, There is an effect that can be.

In addition, when manufacturing building materials, it is possible to maintain the gloss and strength of the product to a certain level without using glaze, thereby preventing harmfulness of the glaze. Also, since the product can be completed only once at a low temperature, It has the effect of reducing the labor and fuel costs required.

1 is a flow chart sequentially illustrating a method for manufacturing a building material according to an embodiment of the present invention.
2 is a test report showing the bending strength according to the KS standard of a granite ceramic tile manufactured by the method of manufacturing a building material according to an embodiment of the present invention.
FIG. 3 is a test report showing the bending strength according to the KS standard of the granite-basalt ceramic tile manufactured by the method of manufacturing a building material according to an embodiment of the present invention.
4 is a test report showing the result of the hazard test according to the KS standard of the granite ceramic produced by the method of manufacturing the building material according to the embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, the embodiments of the present invention can be modified into various other forms, and the scope of the present invention is not limited to the following embodiments.

In addition, to include an element throughout the specification does not exclude other elements unless specifically stated otherwise, but may include other elements.

1 is a flowchart showing a method of manufacturing a building material according to an embodiment of the present invention.

Referring to FIG. 1, a method of manufacturing a building material according to an embodiment of the present invention includes: a primary mixing step (S10) of preparing a base material; A secondary mixing step (S20) of preparing a granite mixture; Molding the processed body (S30); And firing the processed body (S40).

In the primary mixing step, the base material is prepared by mixing 1 to 40% by weight of paper and 60 to 99% by weight of a mixture of water and soil (S10). In the primary mixing step, a paper jug is first prepared, and soil is put into the paper jug to produce, for example, a paper clay as a base material. If the content of the soil is less than 1% by weight, plasticity may be lowered. If the content of the soil exceeds 40% by weight, the content of the paper is relatively decreased, and cracks may occur in the product after firing, There is a problem that the color is not uniformly displayed on the surface of the finished building material when the pigment is added.

At this time, the soil can be used, for example, clay. The clay refers to fine natural soil particles having a diameter of 0.002 mm or less. In addition, the clay may contain hydrous iron oxide and iron hydroxide-free silica, may have a red or yellow color, and has excellent anti-fungal effect, deodorizing effect and heat radiation effect.

In the step of preparing the base material, an example of a method for manufacturing the rice husk is as follows.

The fish cake was first filled with warm water by about 3/4 in a bucket-like pail, then put in two rolls of toilet paper, and stirred using an electric drill fitted with a stirring rod so as to be released for 5 minutes to 1 hour Can be manufactured. At this time, the agitation time may be appropriately adjusted according to the material of the used paper.

In addition, the toilet paper is torn in a small amount of about 2.5 to 5.0 cm, and it is injected into the pail little by little. Since the time required for releasing the paper varies depending on the material of the paper, a kind of paper is used . At this time, the components forming the color printed on the paper are mostly removed in the firing process, so that it is not necessary to remove them. Thereafter, when the paper loosened in the water is removed, the paper is sifted to separate the toilet paper separately.

Further, in the above process, a step of adding pigments to the base material may be further performed if necessary. When pigments are added to the base material, the color of the paper is changed by the color of the added pigment, which acts to impart a desired color to the finished building material.

Next, the diluted clay is mixed with the toilet paper which is filtered through the sieve, and the resultant is placed on a gypsum board and dried to prepare a base material. At this time, it is possible to prepare the base material by firstly drying the rice cake, then adding the solid clay powder to the dried rice cake, or mixing the diluted clay with the rice cake first and then drying the mixture.

In the secondary mixing step, a granite mixture is prepared by mixing 10 to 50 wt% of granite sludge with respect to 100 wt% of the base material (S20). If the content of the granite sludge is less than 10% by weight, the strength of the building material may be lowered and the shrinkage ratio may be increased to cause cracking in the product. If the content of the granite sludge exceeds 50% by weight, Problems may arise. In addition, a dispersant may be further added to the base material so that granular sludge is dispersed if necessary. The dispersant may be, for example, one of sodium hexametaphosphate, sodium silicate, sodium tripolyphosphate and Starch.

The granite sludge used in the granite cutting and grinding process in the granite cutting process uses fine granules in the granite cutting and polishing process. In this embodiment, So that the granular fine powder is mixed with water to be sludge.

Thereafter, the granite sludge thus prepared is placed in a sedimentation tank, and a sedimentation process (S21) is performed in which the granular fine particles are submerged in the bottom of the sedimentation tank by their own weight. When the granite fine powder is completely submerged in the sedimentation tank, foreign substances and supernatant located on the sedimentation tank are removed, and the granite sediment is collected in the sedimentation tank and dried to obtain granular fine powder (S22).

At this time, if the particle size of the granite fine powder is too large, a foreign substance may be formed when blended with the base material, so that the granular fine powder can be sieved before mixing the granular fine powder. At this time, it is possible to select fine granular fine particles containing 80% or more of the fine particles passing through the sieve of preferably 80 mesh or less, more preferably 150 mesh, by controlling the size of the sieve.

Further, after the granular fine powder is dried, a de-ironing step can be performed if necessary. The de-ironing step removes iron particles that can flow in the stone processing process by passing granular fine particles dried in a de-ironing machine.

Further, after the above-mentioned de-ironing step, a heating step can be carried out if necessary. In the heating step, the granular fine powder after the de-ironing is heated to a high temperature to burn and remove the microorganisms contained in the granite. At this time, there is no particular restriction on the heating temperature and time, but sufficient heating is required to remove microorganisms.

These granites are distributed evenly in Korea. Especially, Pocheon granite is very suitable for manufacturing building materials according to the present invention because of its excellent material and properties.

In this embodiment, the granite fine powder is mixed with the base material to prepare a granite mixture. At this time, the base material and the granular fine powder are kneaded with a kneader or a hand, and a granite mixture is prepared by kneading a granular fine powder into a base material while the granular fine powder is kneaded. At this time, the secondary mixed granite mixture can be matured at 15 ° C for 7 days, and water can be sprayed uniformly and the bacteria can reproduce and the formability can be improved.

Meanwhile, in the secondary mixing step, 5 to 30% by weight of the basalt sludge may be further mixed with 100% by weight of the base material to provide various effects such as strength improvement. If the content of the basalt sludge is less than 5% by weight, the effect provided by the basalt can not be realized properly. If the content of the basalt sludge exceeds 30% by weight, the viscosity becomes too low, Bubbles may form on the surface of the body, resulting in defective product.

The basalt has the action of far-infrared radiation action and adsorption and decomposition of heavy metals in the body, thereby expanding the capillary blood vessels and promoting metabolism, thereby providing fatigue recovery, prevention of skin diseases and prevention of various adult diseases, The effect of refreshing the hair can be expected.

In addition, since the basalt rock has strong antimicrobial activity, it suppresses the reproduction of mites and fungi, which cause atopy, and has strong adsorption and deodorizing properties, so that it can be expected to reduce various unpleasant odors and formaldehyde. In addition, the basalt rock has a uranium content of about 0.88 ppm, which is significantly less than that of basic igneous rock, granite, sandstone, limestone, andesite and shale.

These basalt rocks contain about 50% of silicon dioxide (SiO ₂ ) as a main component. The silicon dioxide has a characteristic of weakening the viscosity and strengthening the fluidity, so that it is possible to more effectively increase the strength of the building material after firing and to prevent the occurrence of cracks.

At this time, the basalt sludge may be subjected to a precipitation and drying process, followed by a filtration step to produce a basalt fine powder.

Next, the granite mixture is molded into a block such as a brick or a processed material having various shapes such as boundary stones used for roads or flower beds, a built-in interior material such as indoor or outdoor decorative tiles, or ceramics lighting S30). At this time, the processed body may be molded into pollen, vital magnet or the like when necessary.

Next, the processed body is put into a kiln and fired at 850 to 1,280 占 폚 for 6 to 16 hours (S40) to produce a building material. If the firing temperature is less than 850 ° C, the strength may be lowered and the fraying problem may occur. If the firing temperature is higher than 1,280 ° C, cracks may be generated on the surface of the product and a problem of shape deformation may occur.

Thereafter, if necessary, a second firing step in which the glaze is applied to the surface of the building material and baked once in the kiln can be further performed. The secondary firing can be expected to further improve the luster and absorptivity of the product surface or increase the strength. Meanwhile, the glaze may be colored glaze when it is desired to change the color of the building material, and it is preferable not to add the pigment in the first glaze when the colored glaze is used.

In general, it is ideal that the building material produced through the firing and drying process does not cause cracking and does not shrink during drying and firing. Generally, however, cracks can easily occur if the clay is not uniformly dried. Paper has insufficient rigidity and is vulnerable to heat. Granite can be fired at a high temperature, but it is impossible to form a desired shape by itself.

The building material produced by this embodiment is relatively less sensitive to the firing temperature due to the granular fine component and has excellent plasticity, less shrinkage than general clay after firing, and can greatly improve the strength of the building material.

For example, the shrinkage percentage is 14.5% for US paper clay products, 13-15% for Daewon A products, and 18-20% for Daewon B products. On the other hand, the construction materials including granular sludge of this embodiment The shrinkage is 10 to 13%, which means that the shrinkage is relatively less than that of the conventional product, and cracks do not easily occur.

In addition, the strength of the building material can be raised to a certain level without adding, for example, silicon sand or the like by the fine granular component, and the heat resistance of the building material can be increased by the soil and granite fine particles, In addition to easily molding the material in various forms, it is possible to easily express the surface of the building material in desired colors by adding pigment to the paper component, if necessary.

Test Example

2 is a test report showing the bending strength according to the KS standard of a granite ceramic tile manufactured by the method of manufacturing a building material according to an embodiment of the present invention. Here, the bending strength is defined as the maximum tensile stress on the surface of the specimen which is broken when bent. The granite sludge used as the sample of this example was collected in an amount suitable for the test. As shown in FIG. 2, the granite ceramic tile of this embodiment has a bending strength of 69 N / cm, which indicates that it has a high strength.

FIG. 3 is a test report showing the bending strength according to the KS standard of the granite-basalt ceramic tile manufactured by the method of manufacturing a building material according to an embodiment of the present invention. The granular sludge and the basalt sludge used as a sample were collected in an amount suitable for the test. The granular sludge and the basalt sludge used in the present invention were prepared by adding 10 wt% of basalt sludge to the sample of FIG. As shown in FIG. 3, the granite-basalt ceramic tile of the present example has a bending strength of 90 N / cm and a higher strength, which is superior to that of the embodiment of FIG.

4 is a test report showing the result of the hazard test according to the KS standard of the granite ceramic produced by the method of manufacturing the building material according to the embodiment of the present invention. Here, the granite sludge used as the sample is collected in an amount suitable for the test. As shown in FIG. 4, the granulated pottery of the present embodiment can be confirmed to be an environmentally friendly component since the lead-out lead (Pb) and the eluted cadmium (Cd) are not detected.

The present invention is not limited by the above-described embodiment and the accompanying drawings, but is intended to be limited by the appended claims. It will be apparent to those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. something to do.

S10; Primary mixing step
S20; Secondary mixing step
S21; Granite sludge settling phase
S22; Granite sediment drying stage
S30; Processed body molding step
S40; Process step of sintering process

Claims (8)

A primary mixing step of mixing 1 to 40% by weight of paper and 60 to 99% by weight of a mixture of water and soil to prepare a base material;
A second mixing step of mixing 10 to 50 wt% of granite fine powder with respect to 100 wt% of the base material to prepare a granite mixture;
Molding the granite mixture into a shaped body; And
Firing the processed body at 850 to 1280 캜; / RTI >
Wherein the second mixing step comprises: placing the granite sludge in a settling tank for 10 to 24 hours; And removing the supernatant from the sedimentation tank, collecting the granite sediment submerged in the bottom of the sedimentation tank and drying the same to obtain a granular fine powder and mixing it with the base material; Further comprising a granular sludge.
The method according to claim 1, wherein the primary mixing step comprises mixing 1 to 40% by weight of paper with water, stirring the mixture for 5 minutes to 1 hour, passing the mixture through a sieve to form a paper cake, mixing the paper cake with the clay, Wherein the granular sludge is a granular sludge.
3. The method as claimed in claim 2, wherein the base material is prepared by first drying the paper jug and then mixing the powdered clay.
[3] The method of claim 2, wherein the base material is prepared by mixing diluted clay in a rice cake and drying the mixture.
The method of claim 1, wherein the primary mixing step further comprises adding pigment to the base material to impart color.
The method for manufacturing a building material according to claim 1, further comprising the step of applying a glaze to the surface of the processed body after the firing step and firing secondarily.
The granular sludge according to claim 1, wherein, in the secondary mixing step, the granite mixture is prepared by mixing 5 to 30% by weight of basalt sludge with 100% by weight of the base material .
A building material comprising a granite sludge produced by the method of any one of claims 1 to 7.

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