KR20100015112A - Manufacturing method of white-porcelain with loess - Google Patents

Abstract

PURPOSE: A method for manufacturing white-porcelain using loess is provided to obtain white-porcelain with natural brown or grayish blue patterns using safe and environment-friendly materials. CONSTITUTION: A method for manufacturing white-porcelain using loess comprises the steps of: pugging terra alba, or molding it using a spinning wheel or gypsum mold, and then shaping it to prepare an article of a desired form; pulverizing loess powder with a pulverizer, removing an Fe component using a sieve mounted with magnet at a vent, and then mixing the sieved loess powder with water to prepare loess liquid; forming patterns by applying the loess liquid to the molded article; baking the article at 850~950°C for 10~15 hours; applying glaze on the article; and baking the article coated with glaze again at 1250~1265°C for 12~20 hours.

Description

Manufacturing method of yellow clay white {Manufacturing method of white-porcelain with loess}

The present invention relates to a method of manufacturing ocher white porcelain, and more particularly, to a method of producing white porcelain formed with a pattern using ocher.

White porcelain is a kind of porcelain, which is formed by using refined clay to form a substance, and then glazing on the surface and baking it at a high temperature. The white porcelain is different in color depending on the type of clay and glaze used, and various patterns can be created by using a pigment to draw a pattern or give an embossed relief.

Representative white porcelains that form patterns include inlaid white, iron white, cinnabar white, and blue and white. The inlaid whites are manufactured by engraving the surface with intaglio on the surface and filling the colored soil in the grooves, and the whites of iron trioxide are manufactured by drawing patterns with pigments composed mainly of iron oxide. It is prepared by drawing a pattern by using, and blue and white porcelain is prepared by drawing a pattern using a pigment of cobalt oxide component. The color of the pattern drawn using the pigment is black for white iron, white for cinnabar white, and blue for cyan white.

On the other hand, the present invention not only exhibits a natural brown or gray-blue color that is different from the conventionally used black, red, and blue, but also is inexpensive and uses a new pigment that can be applied to the entire surface without any burden on the white porcelain. Provides a way to create a glyph.

In the present invention, to provide a method of producing white porcelain formed a pattern of natural brown or gray-blue.

In addition, the present invention is to provide a method of manufacturing white porcelain, which is not only cheap and easy to obtain but also forms a pattern using a safe and environmentally friendly material.

In order to achieve the above object, the present invention provides a method for forming a pattern on the white porcelain using ocher.

Ocher is not only easily available but also harmless to the human body, so it is suitable for use as a pigment of porcelain. However, in the case of coloring using conventional loess as it is, there is a problem that not only the texture of the colored surface is rough due to the uneven particles, but also the iron component contained in the loess turns black during the calcination process, resulting in spot-like stains. Therefore, there is no problem in using a small amount of earthenware as a material of relatively poor quality or by mixing a small amount as a part of a material such as glaze. It was practically impossible to use it as a pigment.

Therefore, in the present invention, after removing the iron component from the loess using a magnet, it is used as a pigment. In this case, iron particles surrounded by ocher and relatively large particles are often left unremoved by using magnets, which causes stains after firing, thereby degrading the value of the product. The problem is prevented in advance by finely pulverizing the ocher powder prior to its removal.

The manufacturing process of ocher white porcelain according to the present invention comprises a molding step, an ocher solution manufacturing step, a pattern forming step, a first roasting step, an oiling step, and a chaebol roasting step.

First, in the molding step, the porcelain clay, such as kaolin, sancheong, miyang clay, and super white, is prepared and refined, and then molded using a spinning wheel or a plaster mold, and then bent to produce a desired shape.

In the ocher liquid manufacturing step, the ocher powder is put into a grinder, pulverized into fine powder, and then put into a sieve device. At this time, by using a sieve device equipped with a magnet at the outlet, the iron component is removed at the same time as the sieve is removed. The fertilized ocher powder is opened in water to prepare an ocher solution. If the particles of ocher powder are too large, the removal of iron components may be incomplete, which may result in uneven appearance of spots on the finished product, and in order to reduce the particle size of the powder, more time and cost are required for the grinding process. In this invention, it is preferable to use the loess powder of the size which passes through the sieve of 325 mesh. On the other hand, the mixing ratio of the ocher powder and water is not particularly limited in the mixing ratio, but for the convenience of the process it is preferable to mix within the concentration range of the level that will not flow down when the ocher liquid is applied to the substrate.

In the glyph forming step, the ocher is applied to the molded article to form a glyph. When the pattern is formed, the pattern is freely formed by applying a pattern forming method such as a guiding technique, a printing technique, a gilding technique, and an ironing technique, and instead of the conventional pigments including cobalt-based pigments used in blue and white porcelain, Color using liquid.

In the first roasting step, the product having a pattern is calcined for 10-15 hours at a temperature of 850 ~ 950 ℃.

In the lactation phase, glazes on the finished roast. At this time, the glaze does not harm the color of ocher by using transparent glaze mainly composed of feldspar, limestone, etc., and when using oil, choose a convenient method among immersion, spraying, and coating in consideration of the size and shape of the object. .

In the chaebol roasting step, glazed items are fired at a temperature of 1250 ~ 1265 ° C. for 12-20 hours. At this time, the color of the finished porcelain can be adjusted by selecting the oxidizing or reducing firing, and the brown color on the oxidizing firing, and the grayish blue color on the reducing firing.

The porcelain prepared according to the above process is cooled to room temperature and then screened to obtain ocher white according to the present invention.

The ocher white produced according to the present invention exhibits a strength similar to that of ordinary white porcelain, and thus can be used in various fields, including tableware, ornaments, tiles, etc., and the part colored with ocher is colored brown or gray-blue to be natural and comfortable. Can create an atmosphere.

Since the ocher white according to the present invention is used after removing the iron component from the loess, it is possible to express natural brown without generating black stains due to the iron component. In addition, since the ocher white according to the present invention uses ocher as a pigment, it can not only save costs compared to the use of ordinary pigments, but also can be used safely in tableware as it is a safe material that is harmless to the human body. It is environmentally friendly.

The following examples are provided to help the understanding of the present invention, and the present invention is not limited to the following examples.

Example 1

After preparing and buffing the coarse blue clay, it was molded in the form of a container using a spinning wheel, dried for half a day, and then bent to prepare a container-shaped product. On the other hand, after the crushed ocher powder was sieved using a 325 mesh sieve, a magnet was mounted around the outlet to sieve while removing the iron component contained in the pulverized product. The filtered ocher powder was opened in water to prepare an ocher solution.

A pattern was drawn on the outer surface of the molded article using ocher solution. On the outer surface of another molded article, the ocher solution was evenly applied on the entire surface, and then a pattern was drawn using iron oxide. After the coating liquid of the patterns forming the pattern was allowed to dry, it was placed in a kiln at about 850 ° C. and first baked for 12 hours. After the first baked items waited at room temperature, they were immersed in a transparent glaze consisting of feldspar, quartz and limestone, and then placed in a kiln at about 1260 ° C. for two hours.

After the second firing, they waited for the dishes at room temperature, and after removing the defective products, selected the ocher white porcelain.

1 is a flow chart showing a manufacturing process of ocher white according to the present invention.

Claims (3)

A molding step of training the clay and molding it using a spinning wheel or plaster mold and then bending to produce a desired material; Ocher powder is pulverized by a pulverizer, using a sieving device equipped with a magnet in the outlet to remove the iron component, and then the ocher liquid manufacturing step of mixing the sieved ocher powder with water to produce an ocher solution, Glyph forming step of forming a pattern by applying the ocher solution to the molded article, First baking step to bake a pattern-formed product at a temperature of 850 ~ 950 ℃ for 10 to 15 hours, The lactation phase of glazing on the finished roasting, The method of manufacturing ocher white porcelain, characterized in that consisting of the chaebol roasting step for glazing the glazed substance at a temperature of 1250 ~ 1265 ℃ for 12 to 20 hours. The method of claim 1, In the ocher liquid manufacturing step, the ocher white powder manufacturing method characterized in that the ocher powder is mixed with water to pass through the sieve of 325 mesh to prepare the ocher white liquid. The method according to claim 1 or 2, The method of manufacturing ocher white porcelain characterized in that the coating step is coated with a transparent glaze consisting of feldspar, silica, limestone.

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