KR101171787B1 - Method for manufacturing a tile and water-sludge mortar - Google Patents

Abstract

  The present invention is a composition of 50% by weight of clay, 37% by weight of purified water sludge, 13% by weight of tile, mixed-forming-drying-primary oil (primary glaze)-dry-primary firing-secondary glaze The present invention relates to a wet purified sludge mortar prepared through a secondary firing-cooling process and a method for producing a tile using the same.

Description

Water purification sludge mortar and manufacturing method of the tile using the same {METHOD FOR MANUFACTURING A TILE AND WATER-SLUDGE MORTAR}

The present invention is a mixture of 50% by weight of clay, 37% by weight of purified water sludge, 13% by weight of the mixture-molding-drying-primary oil (primary glaze)-drying-primary baking-secondary glaze- The present invention relates to a purified sludge mortar prepared through a secondary firing-cooling process and a method for producing a tile using the same.

Economic development and improvement of life have been developed in various patterns, increasing the use of water, and thus, water treatment plant facilities have been inevitably increased. Therefore, the amount of sludge, which is a secondary by-product generated during water treatment, also gradually increases, and air and water in the purified water sludge remain contaminants, and the treatment thereof is a big environmental problem.

At present, treatment of purified sludge depends on methods such as offshore dumping and landfilling. However, marine dumping has many problems in the process of managing, storing, and transporting sludge to the sea, and dumping of sludge is prohibited in Korea because waste dumping is prohibited worldwide by the London Convention. It is.

On the other hand, there is a method of simple incineration after drying as another treatment method, the high incineration cost and the treatment of ash generated after incineration has become a problem. This ash is usually mixed with solidifying agents such as Portland cement, but it is not suitable for the situation where landfill is insufficient as domestic situation because the volume of waste generated at that time becomes large.

Therefore, it is desirable to explore a method for reducing secondary pollutants generated during treatment by actively utilizing the water treatment sludge beyond the simple treatment step. The company has come up with a way to recycle wastewater sludge that is thrown away as a building material in order to achieve the maximum economic efficiency.

For example, in Korean Registered Patent Publication No. 10-340121, after drying the waste water of 60 ~ 80% water content sludge using waste heat from the furnace, adding mineral binder, kaolin, clay, supplying water and stirring, Clay bricks, beams and driveway clay blocks manufactured by molding in a high pressure press and dried and then heated in a furnace at 1200 to 1320 ° C. for 8 hours are described.

Korean Patent Publication No. 10-622394 discloses a purified sludge produced by using charcoal in a large amount at a high temperature in a rotary kiln, mixed with a mixture of cement and water, and then put into a forming mold and then molded again at a high temperature. The manufacturing method of building materials using purified sludge produced by firing is disclosed,

Korean Patent Publication No. 10-555879 discloses that a purified sludge is heated to a high temperature in a rotary kiln, and then mixed and stirred with feldspar, photonite, borax, boric acid, talc, calcium phosphate, and water, and then put into a forming mold. Next, a method for producing a heat-resistant pottery using a purified sludge manufactured by firing at a high temperature again and its composition are known,

Publication No. 10-152209 discloses a process for removing pigments from purified water sludge, a process for removing proteins by immersing residues obtained by alkali in an aqueous solution of hydrogen peroxide, a process for removing inorganics by adding an aqueous acid solution, and organic A method of extracting chitin from purified water sludge through a process of removing a salt by adding a solvent is disclosed.

Korean Patent Publication No. 1992-1519 discloses a method for manufacturing wollastonite fertilizer using raw water sludge, which is prepared by grinding purified sludge and then adding slaked lime.

In Korean Laid-Open Patent Publication No. 10-2010-0027471, organic clay, lithium feldspar or soda feldspar, halosite-like kaolin, diatomaceous earth or fly ash, cullet, limestone or dolomite, talc, lignin tannin, silicon carbide (SiC) Molding step of molding the powder of the tile into a tile; A drying step of drying the molded tile or a firing step of firing the molded tile; A milking step of firstly applying a high refractory Engobe glaze to the top surface of the dried tile or calcined tile, and a second crystalline antibacterial glaze having nanosilver antimicrobial agent added to the first stained surface; Firing the oil-treated tiles; It can be seen that the ceramic lightweight tile manufactured by the method comprising the step of applying the antifouling agent on the surface of the calcined tile and then drying the antifouling agent coating method is disclosed.

The prior art as described above is a problem that the present invention is a problem that the shrinkage generated during rapid quenching during the firing or cooling during the tile manufacturing process, the problem that glaze cracks are generated, and the problems that the raw material is expensive and are not currently used. It is

The present invention, in order to solve the above problems, domestic patent applications No. 10-2003-0016327 (registration number 10-0555879) and 10-2006-0100130 (registration number 10-0863139), of the invention A method of manufacturing a heat-resistant pottery using purified water sludge, a composition thereof, and a soundproof building composition using a purified water source sludge and a method of manufacturing the same. The present invention recycles purified sludge generated in a water purification process and does not crush raw materials. Only by mixing, it improves thermal properties and economics, and it is fired at high temperature 1300 ℃ or higher to lighten weight and diversify colors.

50% by weight of clay, 37% by weight of purified water sludge, 13% by weight of mixed mixture-molding-drying-primary oil (primary glaze)-drying-primary firing-secondary glaze-secondary firing It is a problem solving means of the present invention to provide a method for producing purified sludge mortar prepared through a cooling process and a tile using the same.

The present invention can reduce the production cost to more than 40% level by using the purified water sludge, which is economically effective, and can reduce the cracks generated in the glaze during quenching and quenching in order to prolong the life of the product. In addition, it can make the surface look like crystal and diversify colors, and the particle size of each raw material minimizes shrinkage and lightens it by giving fine pores in the product.The effect of increasing the far-infrared radiation efficiency by using purified sludge There is.

In order to achieve the above object, the present invention is a mixed composition of the composition consisting of 50% by weight of clay, 37% by weight of processed purified sludge, 13% by weight of tile-mixing-drying-primary oil (primary glaze)-drying -Primary firing-Secondary glaze-Wet water sludge mortar prepared by secondary firing-cooling process and method for producing tile using same.

The clay of the present invention uses 50% by weight, if more than 50% by weight, there is a disadvantage that the molding is not good due to the insufficient adhesion of the clay, if more than 50% by weight weak strength when forming,

The processed purified water sludge of the present invention is put into a kiln (rotary kiln or tunnel-type furnace) 1 to 2 hours of purified water sludge generated in a waterworks water purification plant, and then calcined for 1 to 2 hours at a temperature of 600 ° C to 800 ° C. If the primary processed purified sludge material of ~ 500kg is used in more than 37% by weight, it is difficult to mold, if too small, the molding is good, but the strength of the product is weak, it can be seen that the use of the lowest 37% by weight is most ideal.

Tile material of the present invention is composed of clay 18kg, feldspar 36kg, feldspar 14kg, pottery stone 10kg, kaolin 4kg, and used 13% by weight, if more than 13% by weight, the molding is good but there is a disadvantage that the product cost increases, too If it is small, 13 wt% is suitable because there is a disadvantage in that molding is difficult due to the adhesion of the processed purified sludge.

In the primary firing process, the formed tiles are immediately introduced into the kiln and baked, which is called firing. Molded tiles are baked for about 30 to 60 minutes at 1100 ℃ ± 30 ℃ in the kiln. Through this process, they have the characteristics of tile.

Glazing is a process of coating on Biscuit (base) made through primary firing. Seed oil is also divided into primary oil and secondary oil, with the first oil glaze being referred to as Engobe and the second oil as glaze.

The primary glaze, Engobe, improves the fusion of the base and the glaze (secondary), improving the durability against external influences, and blocking the appearance of the base so that the color appearance of the secondary glaze is better.

In the glaze process, tiles give value as products, and are classified into transparent, opaque, and matte depending on the type.

Transparent glaze is transparent glaze and glossy, opaque glaze is milk glaze (white glaze). Matt glazes are called opaque glazes and are matte and have a rougher surface than transparent and opaque.

Types of glaze include Transparent (TR): Glossy Transparent Glaze, Opaque (OP): Milky White (White) Glaze, Matt: Opaque Glaze, Matte etc.

After the 1st and 2nd oil painting process, the printing process is done. This is the process of attaching the design on the tile surface. It is a process applied to produce more beautiful and diverse products.

Secondary firing is called a second firing after the tiles which have been subjected to the oiling process are fired again. Secondary firing is used to sinter the tile for 30 minutes to 60 minutes at a temperature slightly lower than that of the primary firing at around 1020 ° C to 1070 ° C. This baked tile is finally worth as a finished product.

The production of the primary glaze (Engobe) is made of 50% raw material (hereinafter called frit), 15% zircon, 5% feldspar, 15% quartz, kaolin mixed with limestone, feldspar, silica, zinc and zircon, and then quenched and vitrified. The glaze made by mixing 15% and grinding it with water to make it slip is called Engobe.

Glaze is a glaze obtained by wet grinding 100% of the raw material obtained by melting the raw material mixed with limestone, feldspar, quartzite, alumina, and kaolin in a certain ratio, and then quenching and vitrifying the raw material.

The tile of the present invention is difficult to sinter the temperature above 1100 ℃ due to the shrinkage characteristics of the existing clay material during the firing process, but the experimental results of the production of tile products by using the purified water sludge, the results show that the shrinkage is significantly lower product yield Not only does this improve, but it can be seen that it has a characteristic of producing a high-quality product without any problem even when the product is fired at a high temperature of 1300 ° C. or higher.

Example

First Process (Primary Machining Sludge)

1 ton of sludge generated from a waterworks water purification plant was put into a kiln and fired at a temperature of 600 ℃ ~ 800 ℃ for 1 ~ 2 hours to prepare 80 ~ 500kg primary processed purified water sludge, which is completely calcined with water and organic matter.

Second Process (Manufacturing)

After mixing 18 kg of clay, 36 kg of feldspar, 14 kg of feldspar, 10 kg of pottery stone, 4 kg of kaolin, crushing it with a ball mill and passing it through a 200mesh sieve, the residue is less than 1%.

3rd Process (Manufacture of Engobe)

Limestone, feldspar, silica, zinc and zircon are mixed and then quenched and vitrified to make 50 kg of raw material (hereinafter referred to as frit), 15 kg of zircon, 5 kg of feldspar, 15 kg of quartz, and 15 kg of kaolin. Manufacturing,

4th process (Manufacture of secondary glaze)

After melting the raw material mixed with limestone, feldspar, silica, alumina and kaolin in a certain ratio, and then quenching and wet-crushing 100 kg of the vitrified raw material,

5th process (tile manufacturing)

After mixing 50 kg of clay, 37 kg of the primary processed purified sludge prepared above, 13 kg of the tile material prepared above, and 20 kg of water, followed by injection molding into a tile molding machine to prepare a tile shape, and drying at room temperature for 24 hours, After lubricating the primary glaze prepared above, it was dried for 24 hours at 40 ~ 50 ℃, and then primary firing for 30 minutes to 1 hour at 850 ℃ ~ 900 ℃ in a kiln, then cooled to 40 ℃, After glazing the secondary glaze prepared in, and then calcined for 1 to 8 hours at 1100 ℃ ~ 1300 ℃ in a kiln for cooling to prepare a tile using a hydrostatic sludge of wet.

The purified sludge tile mortar of the present invention prepared as described above is composed of 50% by weight of clay, 37% by weight of purified water sludge, 13% by weight of tile holder,

The processed purified sludge is a processed purified sludge in which the sludge generated in a waterworks water purification plant is put into a firing furnace and calcined at 600 ° C. to 800 ° C. for 1 to 2 hours to completely sinter water and organic substances.

The tile is mixed with 18kg of clay, 36kg of feldspar, 14kg of feldspar, 10kg of pottery stone, 4kg of kaolin, and having a residual amount of less than 1% when passed through a 200mesh sieve.

Experimental Example

The physical properties of the tiles using the purified sludge prepared as in the above example were tested to obtain the following results.

Molecular Properties of Tiles Prepared by Embodiments of the Invention Plastic shrinkage
(%) Plastic strength
(Kg / cm2) Ignition loss
(%) Absorption rate
(%) Thermal conductivity
(W / mK) Apparent weight +5.59 182 4.35 1.29 0.6865 1.252

Slip resistance test results of the tiles produced according to the embodiment of the present invention
Name of sample
Friction Coefficient Test Results

ISO standard

Example DRY WET Rating DRY WET 0.82 0.64 Class 1 <0.5 <0.4 Plain Floor Tiles 0.78 0.41 Class 2 ≥ 0.5 ≥ 0.4

Abrasion resistance test results of the tiles produced according to the embodiment of the present invention (ISO standard) Name of sample Wear resistance test results Example Class IV Plain Floor Tiles Class III

Claims (2)

In purified sludge mortar,
50% by weight of clay, 37% by weight of purified water sludge, 13% by weight of the tile holding,
The processed purified sludge is a processed purified sludge in which the sludge generated in a waterworks water purification plant is put into a firing furnace and calcined at 600 ° C. to 800 ° C. for 1 to 2 hours to completely sinter water and organic substances.
The tile holder is mixed with 18kg clay, 36kg feldspar, 14kg feldspar, 10kg pottery stone, 4kg kaolin, water purification sludge mortar, characterized in that the residue is less than 1% when passed through a 200mesh sieve. In the manufacturing method of tiles using purified sludge mortar,
First Process (Primary Machining Sludge)
1 ton of sludge generated from a waterworks water treatment plant was put into a kiln and fired at a temperature of 600 ℃ ~ 800 ℃ for 1 ~ 2 hours to prepare 80 ~ 500kg primary processed purified water sludge, which is completely calcined with water and organic matter.
Second Process (Manufacturing)
After mixing 18 kg of clay, 36 kg of feldspar, 14 kg of feldspar, 10 kg of pottery stone, 4 kg of kaolin, crushing it with a ball mill and passing it through a 200mesh sieve, the residue is less than 1%.
3rd Process (Manufacture of Engobe)
Limestone, feldspar, silica, zinc and zircon are mixed and then quenched and vitrified to make 50 kg of raw material (hereinafter called frit), 15 kg of zircon, 5 kg of feldspar, 15 kg of quartz, and 15 kg of kaolin are crushed together with water and put into a slip state. Manufacturing,
4th process (Manufacture of secondary glaze)
After melting the raw material mixed with limestone, feldspar, silica, alumina and kaolin in a certain ratio and then quenching and wet-crushing 100 kg of the raw material vitrified,
5th process (tile manufacturing)
After mixing 50 kg of clay, 37 kg of the primary processed purified sludge prepared above, 13 kg of the tile material prepared above, and 20 kg of water, followed by injection molding into a tile molding machine to prepare a tile shape, and drying at room temperature for 24 hours, After lubricating the primary glaze prepared above, it was dried for 24 hours at 40 ~ 50 ℃, and then primary firing for 30 minutes to 1 hour at 850 ℃ ~ 900 ℃ in a kiln, then cooled to 40 ℃, After the secondary glaze prepared in the oil and then fired for 1 to 8 hours at 1100 ℃ ~ 1300 ℃ secondary firing in a kiln for producing a tile using purified sludge mortar characterized in that the cooling.