KR100718750B1 - Preparing method for glazing and non-glazing porcelainous tile - Google Patents

Abstract

       The present invention relates to a process for the production of oil-based and oil-free ceramic tiles, according to the present invention 38-47% by weight, preferably 40-45% by weight, 12-32% by weight pottery or clay, preferably 15-30 Providing a mixture consisting of% by weight, 22-48% by weight of clay, preferably 25-45% by weight, shaping the mixture into a tile, and forming the molded tile at a temperature of 1280-1300 ° C. at 30 Provided is a method for producing a magnetic tile comprising the step of firing for ˜70 minutes and a magnetic tile according thereto, optionally adding 0.001 to 15 parts by weight of pigment, preferably 0.01 to 11 parts by weight, based on 100 parts by weight of the mixture described above. In addition, the manufacturing method according to the present invention has good moldability and economical efficiency, the magnetic tiles produced according to the low porosity is very low water absorption rate, excellent wear resistance, high friction and excellent cleanliness bathroom It is particularly suitable as a floor finishing material for floors, verandas, kitchen floors, and the like. In the case of granite ceramic tiles using pigments, the same color and pattern remain intact even when the surface is worn.

Tiles, porcelain, oiled, oilless

Description

PREPARING METHOD FOR GLAZING AND NON-GLAZING PORCELAINOUS TILE}

       The present invention relates to a manufacturing method of oil-based and oil-free porcelain tiles, and more particularly, low porosity, very low water absorption, excellent wear resistance, high friction, high cleanliness, and pigments. In the case of producing granite ceramic tiles using the same color and pattern is maintained as it is, even if the surface is worn, while having good moldability and high economy, it is particularly suitable as a floor finishing material for bathroom floor, porch, kitchen floor, etc. And it relates to a method for producing a non-magnetic ceramic tile.

       In general, tiles generally refer to thin products manufactured by molding clay and rock powder, and then firing them, and have a variety of colors, specifications, and patterns because they have practical aspects for protecting the finish and decorative aspects with patterns and coloring. It is an interior material with excellent water resistance, durability, fire resistance, cleanliness, firmness and decoration.

       Tiles can be classified by various methods, but they are generally classified into earth, earth, porcelain, porcelain and utensils depending on the firing temperature. Is a low-temperature firing (approximately 790 ~ 1000 ℃) by slowly heating ordinary clay. When tapping, it gets “mung” and absorbs more than 20%, and it is fragile because it uses the lowest grade raw materials. The porcelain is porous and not translucent and clay is relatively low-temperature firing (1100 ~ 1250 ℃), and when it is beaten, it has a weak sound of "smart" and its absorption rate is more than 10%. It is used as terracotta, and its porcelain is made of high quality pottery stone, feldspar powder and clay as a raw material, and is fired at high temperature (1250 ~ 1450 ℃). As the absorption rate is less than 1% and transparent glaze can be used to save the pattern, and it is slightly permeable, and it has a metallic hearing and high abrasion resistance, so it is widely used as a tile or sanitary ware. It is calcined (1160 ~ 1350 ℃), which has higher strength than ceramics and absorbs less than 10%, produces clear sound.

       On the other hand, tiles can be classified into oil-based tiles and oil-free tiles depending on whether glaze is applied, and oil-based tiles are fired by applying glaze on the surface of the tiles. Or it is widely used for flooring, and oil-free tiles are fired without applying glaze on the surface of the tiles. They are excellent in strength, excellent in abrasion resistance, and are widely used as flooring materials for multi-use facilities because the same color is maintained even when the tile surface is worn. .

       On the other hand, as a prior art, the patent registration No. 0150770 (filed date: 12/03/1996) by Sungil Industries Co., Ltd. is a main raw material powder mixed with 60% by weight of feldspar, 25% by weight of pottery stone, and 15% by weight of clay. Method for producing a black spot pattern porcelain-free ceramic tile consisting of homogeneously mixing the black spots on the powder in a weight ratio of 1, putting the mixed powder into a mold and molding into a base tile, and then firing at a temperature of 1200 ℃ ± 30 ℃ and The black spot pattern porcelain-free tiles produced by the present invention are disclosed, but this method is relatively satisfactory in formability and economy due to the use of relatively expensive and non-plastic feldspar in order to increase wear resistance. In particular, since feldspar acts as a flux, the addition of a large amount of feldspar tends to lower the melting temperature and is therefore fired at a relatively low temperature. The porosity is high and referred to wear resistance and strength there is a possibility that a relatively inferior.

       Accordingly, the present inventors have made a lot of efforts to overcome the above problems of the prior art, and as a result, the amount of feldspar added is relatively low, the amount of clay added is relatively high, and the firing temperature is increased. As a result of discovering that the solution can be effectively solved and based on this, the present invention has been completed.

       It is an object of the present invention to provide a process for the production of oil- and oil-free magnetic tiles which is economical while having good moldability, low porosity, high wear resistance and strength.                         

       Another object of the present invention is to provide oil-based and oil-free ceramic tiles according to the above object.

       According to a preferred aspect of the present invention for achieving the above object of the present invention, 38 to 47% by weight of feldspar, preferably 40 to 45% by weight, 12 to 32% by weight of pottery or clay, preferably Providing a mixture consisting of 15 to 30% by weight, 22 to 48% by weight of clay, preferably 25 to 45% by weight, molding the mixture into a tile, and forming the formed tile at 1280 to 1300 ° C. Provided is a method of manufacturing a magnetic tile comprising the step of firing at a temperature of 30 to 70 minutes.

       According to another preferred aspect of the present invention for achieving the above object of the present invention, in the above-described mixture providing step to add 0.001 to 15 parts by weight of pigment, preferably 0.01 to 11 parts by weight to 100 parts by weight of the mixture A method of making a magnetic tile is provided.

       According to another preferred aspect of the present invention for achieving the above object of the present invention, the above-mentioned clay in the mixture providing step is composed of clay as primary clay and ordinary clay as secondary clay. A method for producing magnetic tiles is provided wherein the ratio of clay to clay is 1: 0.5 to 1.5.

       According to a preferred aspect of the present invention for achieving the above object of the present invention, there is provided a magnetic tile produced according to the manufacturing method of the above aspect.

       Hereinafter, the present invention will be described in detail.

O

(M은 CaㅇNaㅇKㅇBa, T는 AlㅇSi)로 표시되며, 지각을 구성하는 가장 중요한 조암광물(造岩鑛物)의 하나로서 암석 중 약 60％를 차지한다. 천연적으로 산출되는 장석은 대부분 CaAl

Si

O

(회장석, An), NaAlSi

O

(조장석, Ab), KAlSi

O

(칼륨장석, Or)을 단성분(端成分)으로 하는 3성분계에 속한다. 비중은 성분에 따라 다르며 약 2.55~2.76이고 굳기는 6이며, 색깔은 유리광택을 띤 백색, 크림색, 분홍색, 회색 등이 일반적이다.In the magnetic tiles of the present invention, feldspar used as one of the main raw materials is chemically formulated MT.

O

(M is Ca-Na-K-Ba, T is Al-Si) and is one of the most important coarse minerals in the earth's crust, accounting for about 60% of the rock. Most naturally produced feldspar is CaAl

Si

O

(Seoul, An), NaAlSi

O

(Ph, Ab), KAlSi

O

It belongs to the three component system which has (a potassium feldspar, Or) as a single component. The specific gravity varies depending on the ingredients, and the hardness is about 2.55 ~ 2.76, and the hardness is 6. The color is generally glassy white, creamy, pink, or gray.

       Feldspar has good moldability of clay and clay which will be described later, but its kneaded product is not sufficiently mechanical strength even by firing, so it is clay as a sintering component or flux that solidifies at a relatively low temperature region. Melting and fixing to increase the mechanical strength, and because it contains alkali, it melts at a lower temperature than other minerals.

       In the present invention, the content of the feldspar is 38 to 47% by weight, preferably 40 to 45% by weight, based on the mixture excluding the pigment, and when the content exceeds 47% by weight, moldability deteriorates, cost increases, and calcination temperature decreases. It is not preferable because there is a risk of causing a decrease in mechanical strength and wear resistance due to the increase in porosity, and if less than 38% by weight, it is also undesirable because there is a fear of causing a decrease in mechanical strength and wear resistance due to insufficient sintering action.

     In the ceramic tile of the present invention, pottery stone, which is one of the main raw materials, is a soft ore that can be made of porcelain with only raw stone, and has a large amount of silicon dioxide SiO₂ containing mica, silica, opal, and the like. It is a dense lump of white or grayish white and incomplete clay formed due to insufficient weathering in the process of weathering feldspar rock such as granite, quartz rough rock and andesite. Its fire resistance is SK 26 ~ 29, hardness 1 ~ 3, specific gravity 2.61 ~ 2.74, and is widely used for various kinds of tableware, sanitary ware, tile, rubber and synthetic resin filling. On the other hand, porcelain clay is the same material as pottery, but clay is a little harder after thousands of years, and high quality clay is white and has high plasticity. It has the property of containing alkali and promotes sintering like feldspar.

       Clay is a plasticized and viscous rocky pavement made of fine weathered fine particles, and geologically, it is a seabed sediment with a particle diameter of 1/256 mm or less. Clay is a substance that becomes particles such as montmorillonite, kaolin, mica clay mineral, and chlorite mineral, which are clay minerals, and can have fluidity or plasticity by controlling the mixing ratio with water, and improve mechanical strength by drying and firing. have.

       In the present invention, the content of the clay is 22 to 48% by weight, preferably 25 to 45% by weight, based on the mixture excluding the pigment, and in the case of more than 45% by weight, due to an increase in porosity despite an increase in the firing temperature It is not preferable because there is a possibility of causing a decrease in mechanical strength and abrasion resistance, and if it is less than 22% by weight, it is also undesirable because there is a fear of causing deterioration of moldability and increase of cost.

       On the other hand, the clay may be composed of white clay as a primary clay having inferior viscous power but good whiteness after firing and ordinary clay as a secondary clay having good white power after firing but inferior whiteness, in which case the clay and clay mentioned above Is a ratio of 1: 0.5 to 1.5.

       The mixture is press molded into a tile, and then the molded tile is calcined for 30 to 70 minutes, preferably for about 50 minutes, at a temperature of 1280 to 1300 ° C, preferably 1290 to 1300 ° C.

       Further, optionally, 0.001 to 15 parts by weight, preferably 0.01 to 11 parts by weight of any at least one suitable color pigment, such as a black pigment, known in the art, may be added to 100 parts by weight of the mixture described above. Granite patterned granite ceramic tiles may also be produced by homogeneously mixing.

       More specifically, the manufacturing process described above is as follows.

     After base blending, the mineral raw materials as described above and optionally pigments are mixed in an appropriate composition ratio as described above using an auto-weighing system, followed by grinding using a grinding mill such as a ball mill. Dry using appropriate drying means such as a spray dryer, and store in silos (zetomic phase).

       The particle size of the mixture pulverized in the above-mentioned clay step is, for example, 2% by weight of 35 mesh or less, 5% by weight of 35-50 mesh, 40% by weight of 50-80 mesh, 40% by weight of 80-100 mesh. %, 100 to 200 mesh range of 10% by weight, 200 mesh or more can be about 3% by weight.

       The mixture is then thoroughly mixed again using an automatic weighing meter and a mixer, molded into tiles of appropriate shape and dimensions using press means such as a press, and then dried to obtain a molded semifinished product and loaded into a tray (forming step).

       Then, for example, firing is carried out at a high temperature condition as described above in a urine such as a roller hearth kiln (firing step).

       Finally, inspection of the appearance, dimensions, curvature, etc. of the tile is performed, and then only the passed products are sorted, packaged, and shipped (packing step).

       Optionally, in the present invention, a conventional glaze may be applied to the surface of the molded tile prior to the firing step, and then fired (non-slip) for floor tiles, as well as firing. It may be desirable to apply a glaze to the fall prevention.

       Examples of such non-slip glazes include non-slip glazes composed of high frit, low frit, feldspar, limestone, clay, carboxymethylcellulose, and bentonite, and pigments as optional components may be mixed and used in the glaze. have.

       In addition, if necessary, when the floor tiles are formed, various irregularities for non-slip or anti-slip may be embossed or engraved on the outer surface thereof.

       Hereinafter, the present invention will be described in more detail with reference to the following examples.

Example 1

       A mixture having the following composition and composition ratio was prepared.

       Doto (weathering type) ------------ 30% by weight

       Feldspar -------------------- 45% by weight

       White clay -------------------- 10% by weight

    Clay -------------------- 15 wt%

                                100 wt%

        11 weight% of the colored pigments were mixed with 100 parts by weight of the mixture, press-molded into a 200x200x7mm floor tile, charged in urine, and fired at a temperature of about 1300 ° C. for 50 minutes to form an oil-free granite ceramic tile. Was prepared.

Example 2

       Six tons of the mixture having the following composition and composition ratio were prepared.

       Buyeo Feldspar Class B ----------------- 40% by weight (2400kg)

       Uijeongbu Stone ------------------- 15% by weight (900kg)

       Yeoju white soil (water content 10%) ------- 20% by weight (1200kg / actual input amount-1333kg)

       Yeongwol clay (10% moisture content) ------- 10% by weight (600kg / actual dose-667kg)

       Clay (china clay: 20% moisture content) --8 weight% (480 kg / net input -600 kg)

     Muan clay (moisture content 20%) ------- 7% by weight (420kg / actual dose-525kg)

                                       100 wt%

Mixture of B-10 (black pigment spots) 0.03 parts by weight (180kg) and sodium tripolyphosphate as a peptizer 0.35x10 ^-2 part by weight (21kg) per 100 parts by weight of the mixture, and is pulverized by a ball mill to 35 mesh 2% by weight, 5% by weight of 35-50 mesh range, 40% by weight of 50-80 mesh range, 40% by weight of 80-100 mesh range, 10% by weight of 100-200 mesh range, 3% by 200 mesh or more Crushed into a powder having a particle size distribution of%. Water was added thereto to adjust the specific gravity to 1.67 so that the residue 1g or less was 230 #.

        The mixture was press-molded into a 200x200x5mm floor tile, then charged in urine and calcined at a temperature of about 1300 ° C. for 50 minutes to prepare an oil-free granite ceramic tile.

As described above, the manufacturing method of the oil-based and oil-free magnetic tiles according to the present invention has good moldability and economical efficiency, and the magnetic tiles produced according to the present invention have low porosity, very low water absorption rate, excellent wear resistance, high friction, and cleanliness. It is excellent and is particularly suitable as a floor finishing material for bathroom floors, verandas, kitchen floors, and the like. When manufactured with granite ceramic tiles using various pigments, the same color and pattern are maintained even when the surface is worn.

Claims (9)

       After mixing the feldspar, pottery or clay, and the clay mixture, using a grinding means such as a ball mill, crushing it, drying it, storing it in a silo (zetomic step), forming a tile by pressing means and drying it In the method of producing a magnetic tile consisting of the step of obtaining a molded semi-finished product (molding step) and the step of firing at high temperature conditions (firing step), The mixing ratio of each composition in the clay step is 40 to 45% by weight feldspar, 22 to 25% by weight pottery stone, 25 to 45% by weight clay, The clay has a ratio of 1: 0.5 to 1.5 between clay and normal clay, The particle size of the mixture is 5 to 35 mesh 2% by weight, 35 to 50 mesh 5% by weight, 50 to 80 mesh 40% by weight, 100 to 200 mesh 10% by weight, 200 to 1000 mesh 3% by weight By sieve to proportions, 0.01 to 11 parts by weight of the colored pigment is mixed homogeneously with respect to 100 parts by weight of the mixture, The firing step is a method of producing a magnetic tile, characterized in that the firing for 30 to 70 minutes at a temperature of 1280 ~ 1300 ℃.        The method of claim 1, wherein 0.001 to 15 parts by weight of the pigment is added to 100 parts by weight of the mixture in the step of providing the mixture. delete        The method of manufacturing a magnetic tile according to claim 1, further comprising a lubricating step of applying a glaze to the surface of the molded tile prior to the firing step.        The method of manufacturing a magnetic tile according to claim 4, wherein the glaze in said oiling step comprises a pigment.        The method of manufacturing a magnetic tile according to claim 4 or 5, wherein the glaze in the oiling step is a non-slip glaze.        The method of manufacturing a magnetic tile according to claim 1 or 2, wherein in the forming step, a non-slip or anti-slip uneven pattern is embossed or engraved on the outer surface of the tile.        The method for producing a magnetic tile according to claim 2 or 4, wherein the magnetic tile is oil-based or oil-free granite type. delete