KR20030017722A - process for ceramic ware cooking ware - Google Patents

Abstract

PURPOSE: A manufacturing method of ceramic cooking vessels used for stewing, steaming and roasting is provided. The ceramic cooking vessels shorten cooking time, prevent sticking and burning of food, and keep food fresh. CONSTITUTION: The ceramic cooking vessels are manufactured by the following steps of: mixing 40wt.% of clay 30wt.% of talc and 30wt.% of white clay with water; dehydrating to be a mixture containing 20-25% of water; vacuum compressing; forming the mixture into shapes of pot and pan, and deforming; drying naturally to be 10-15% of water content; sintering at 900-950deg.C for 5-6hrs; applying glazes comprising 20wt.% of Ge, 10wt.% of yellow earth, 10wt.% of sand, 15wt.% of feldspar, 5wt.% of limestone, 20wt.% of leaf mold and 5wt.% of oak charcoal; sintering at 1200-1300deg.C for 10hrs.

Description

Process for manufacturing ceramic ware {process for ceramic ware cooking ware}

The present invention relates to a method of manufacturing a ceramic cooking container composed of clay, talcum, white sand.

In particular, the present invention relates to a method of manufacturing a cooking vessel used for steaming or roasting such as steamed hot pot, hot pot, and other hot pots. Especially, the cooking time is shortened due to high heat preservation and burned on the surface of the container. The present invention relates to a method of manufacturing a porcelain cooker that does not become entangled and has high sterilizing power, so that the cooked food maintains freshness for a long time.

Cooking containers made of ceramics, ceramics and glass are common.

However, since the conventional ceramic cooking container was formed by coarse grinding of general heat-resistant soil, the pores were large and oil penetrated through the pores, resulting in a burning smell and food easily burned. The fugitive phenomenon was severe and unsuitable for cooking vessels. In addition, there was a drawback of being easily damaged by a long time or a slight shock at a high temperature, and in particular, the color was not beautiful. (Patent Publication April 17, 1995)

Ceramic cooking containers are relatively simple to manufacture and robust, but are easily discolored when left at high temperatures for a long time, and especially because of their high thermal conductivity, food is deposited on the walls of the containers, making them difficult to clean and unhygienic. Therefore, they are used for grilling food such as fish or meat. It didn't work.

Glass cooking containers were easily broken due to high breakage rate and sensitive to temperature difference between low temperature and high temperature, or especially because of high thermal conductivity, which was not suitable for easy burning or roasting and was difficult for housewives.

The present invention is to solve the above problems, and to obtain a porcelain cooking container that can serve as cooking, such as steamed dishes, grilled, such as steamed rice, hot pot, etc. The present invention is aluminum oxide and silicon To provide a method of manufacturing a ceramic cooking vessel using a mixed clay containing a large amount of clay and talc, clay and the like.

The method for producing a ceramic cooking container of the present invention is to mix the clay, talcum, white clay with water and compress it in a filter to dehydrate 20-25% of water and put it in a vacuum grinder (compressor) of 20-30% of water. Obtaining heat resistant mixed soil

Process into a pot-shaped cooking container, demold at a suitable time, dry it naturally, and then heat the molded product having a moisture content of 10-15% at 900-950 ° C for 5 to 6 hours, and then primary firing.

Applying glaze to roasting products

It consists of a step of second firing the primary fired primary product coated with glaze.

The clay used in the present invention contains a large amount of aluminum oxide and silicon oxide, and contains a small amount of potassium oxide, titanium and the like.

In the first stage of the present invention, the mixed soil is 40% by weight of clay, 30% by weight of talc (2-10 mm), 30% by weight of clay sand, mixed with water and then pulverized and then poured into fabric paper and compressed for about 180 minutes. After dehydration, water is dehydrated by 20-25%, and a viscous mixed soil is prepared by using a vacuum drill. At this time, a small amount of light injection (0.0005% by weight) is mixed.

Since the mixed soil contains a large amount of aluminum oxide and silicon oxide, fine pores are generated in the fired product because talc, white clay, molten aluminum oxide, titanium oxide, etc. are melt-bonded during firing. In addition, the entire container is warmed within a short time due to silicon oxide, talc, and clay sand, and the heat preservation is high. Therefore, it does not rise above a certain temperature even if the supply of heat source in the lower part does not rise. The cooking time of the food is shortened.

On the other hand, a small amount of light injection is made of red soil, so the deodorizing effect and bactericidal power are proved to be excellent, thereby improving the sterilizing power in the container.

It is also bright in color and has the effect of preserving fresh food even when cooking or storing cooked food.

In the forming step, the cooking vessel of the present invention is formed with a handle such as a pot shape on the left and right sides, and then mixing the clay into the mold and then rotating the mold to mold the container.

The first molded container is manually removed from the outer tee and then first fired.

The primary fired product is applied by glaze evenly and fired secondly to obtain a finished product.

Glaze used in the present invention is a mixture of germanium, shaping wave (re-crushed green onion product), ocher, sand, talcum, feldspar, limestone, weak soil, oak charcoal, etc. Since it is applied to the surface of the container and fired, a lubricating surface having a certain thickness with fine pores is produced.

Particularly, the surface adhesion state of the glaze is maintained best by firing for a long time (about 10 hours) at a high temperature of about 1300 ° C or more during secondary firing (chaebol firing).

Therefore, the glaze coating layer does not burn food, especially grilled food, food does not stick.

The embodiment of the present invention will be described in detail above.

Stage 1

Mixing 40% by weight of clay, 30% by weight of talcum, and 30% by weight of clay sand in water to obtain a primary mixed soil which is ground for about 120 minutes with a grinder.

Tier 2

The primary mixed soil obtained in the first step was wrapped in fabric paper with holes and left for about 180 minutes under pressure to dehydrate 20-25% of water, which was then dehydrated to 20-30% of moisture in a vacuum drill (compressor). Step to get mixed soil

Tier 3

The first molding step in which the second mixed soil obtained in step 2 is put into the mold and processed into a container form

4 steps

After 1 hour, the primary molding product obtained in step 3 is demolded and dried, and then the secondary molding step is used to remove the tee.

5 steps

The primary firing step of first firing at 900-950 ° C for 5-6 hours at 900-950 ° C temperature by drying the secondary molded product obtained in step 4 for 2-3 days in a natural way to make water content 10 -15%

6 steps

The primary firing product obtained in step 5 is to apply a glaze after removing the tee

7 steps

The primary firing product coated with the glaze obtained in step 6 is characterized in that it consists of a secondary firing step of firing for about 10 hours at a temperature of about 1200-1300 ° C.

The clay contains 27% by weight of aluminum oxide, 58% by weight of silicon oxide, 4% by weight of potassium oxide and ferric oxide, and a little other amount of copper oxide, zinc oxide, and the like. Therefore, micropore is generated inside the container when it is fired because it is mixed with talc and clay sand, and the pores are made of aluminum oxide and other metal components (including non-ferrous metal), talc, and clay sand. It is well mixed with the properties of (including glass components and minerals), so it is mixed and melted uniformly with each other to produce evenly distributed fine pores.

Also glaze is 20% germanium (Ge-32), 10% by weight shaping wave, 10% by weight ocher, 10% by weight sand, 15% by weight talc, 5% by weight feldspar, 5% by weight limestone, 20% by weight clay, oak Since it is composed of 5% by weight of charcoal, it is applied evenly to the surface of the container during the first step (900-950 ° C) and the second step (1200-1300 ° C) and at the same time, about 2mm through pores. As it penetrates and sinters to a degree, the surface of the container acts as a lubricating surface.

The cooking vessel obtained by the method of manufacturing the porcelain cooking vessel of the present invention consisting of the above steps is heated evenly at a lower portion of the cooking vessel, so that the whole cooking vessel is not heated above a certain temperature by the heat dissipation effect through the pores. Edo is not burnt or tangled, and heated containers do not cool easily in hot foods because their temperature is maintained for a long time. Especially, because they contain light injections, they are beautiful in appearance and have high freshness.

Pottery cooking vessel of the present invention obtained in the manufacturing method of the porcelain container of the present invention consisting of the above steps, when cooking with soup, such as hot water or steaming, the container is warmed in a short time and the temperature is stored for a long time, so the cooking time is shortened and the soup, etc. This does not cool easily, and when grilling fish or meat, the surface temperature of the container does not rise above a certain temperature, so it does not burn or stick to the container, and it evenly cooks the inside of the fish or meat.

Claims (3)

Stage 1 Mixing 40% by weight of clay, 30% by weight of talcum, and 30% by weight of clay sand in water to obtain a primary mixed soil which is ground for about 120 minutes with a grinder. Tier 2 The primary mixed soil obtained in the first step was wrapped in fabric paper with holes and left for about 180 minutes under pressure to dehydrate 20-25% of water, which was then dehydrated to 20-30% of moisture in a vacuum drill (compressor). Step to get mixed soil Tier 3 The first molding step in which the second mixed soil obtained in step 2 is put into the mold and processed into a container form 4 steps After 1 hour, the primary molding product obtained in step 3 is demolded and dried, and then the secondary molding step is used to remove the tee. 5 steps The primary firing step of first firing at 900-950 ° C for 5-6 hours at 900-950 ° C temperature by drying the secondary molded product obtained in step 4 for 2-3 days in a natural way to make water content 10 -15% 6 steps The primary firing product obtained in step 5 is to apply a glaze after removing the tee 7 steps The method of manufacturing a ceramic cooking container, characterized in that the primary firing product coated with the glaze obtained in step 6 is fired for about 10 hours at a temperature of about 1200-1300 ° C. The clay according to claim 1, wherein the clay contains 27% by weight of aluminum oxide, 58% by weight of silicon oxide, 4% by weight of potassium oxide and ferric oxide, and other traces of copper oxide, zinc oxide, and the like. Method for producing a ceramic cooking container characterized in that. The method of claim 1, wherein the glaze is 20% by weight of germanium (Ge-32), 10% by weight shaping wave, 10% by weight ocher, 10% by weight sand, 15% by weight talc, 5% by weight feldspar, 5% by weight limestone, Weight%, oak charcoal 5% by weight manufacturing method of a ceramic cooking container, characterized in that the ratio is composed.