What is the melting temperature of pottery? What is the approximate temperature for firing pottery?

The melting point of ceramics is mostly above 2000, and the highest high-steel ceramics are 3000 degrees Celsius.

The firing principle of pottery is as follows:

Ceramics are made of clay as the main raw material, and the plasticity is used to make the clay plastic into a green ceramic object, which is calcined at high temperature to make the green body undergo a series of physical and chemical reactions.

Fired into ceramics. In order to make ceramics more beautiful and functional, some of these products must be glazed and color-fired.

After mixing clay with an appropriate amount of water, it forms a mud ball, which is molded into a shape under the action of external force, and retains its shape after the external force is removed. This property is the plasticity of clay. The billet has a high yield value after forming and the bonding strength that can maintain the bond between the billet particles without falling apart after drying.

During the drying process, the water evaporates, the inter-particle voids are reduced, and the volume shrinks occurs. The addition of barren raw materials (quartz or calcined clinker) and the reduction of water volume to the blank can change excessive flowability, adjust plasticity, and reduce drying shrinkage.

Flux raw materials such as feldspar and talc in clay during high-temperature calcination.

When it reaches a certain temperature, it melts, and a liquid phase appears, which fills in the void between the unmelted particles, relying on its wettability and surface tension.

The porosity decreases, the firing volume shrinks, and at the same time, the refractory components can be dissolved, and a new crystalline phase (mullite) is precipitated from the liquid phase.

and grow. The quartz added to the raw material can be partially dissolved in the liquid phase to increase the viscosity and prevent deformation at high temperatures. The reaction of the dissolution of refractory particles and the precipitation of mullite continues, and finally, mullite, residual quartz and other crystalline phase components are linked with the glass phase (liquid phase) to form a complex structure along with the pores, forming a dense ceramic body.

According to the different compositions of ceramics, the firing temperature is different, and the melting temperature will be higher, which is also different. The melting point of ceramics is mostly above 2000, and the highest high-steel ceramics are 3000 degrees Celsius.

It seems to be more than 1000 degrees, thank you.

The early primitive pottery method is to pile up and burn on the open flat ground, due to the lack of concentration of fire, the firing temperature of the primitive pottery is generally very low, generally below 700, the pottery is red after firing, and the pottery is rough and loose. However, a horizontal cave kiln excavated in Pei Li Gang, Xinzheng, Henan Province shows that about 7,000 years ago, the Chinese people have learned how to build kiln pottery, so that the firing temperature of pottery is increased to 800 900.

Ceramics is a general term for pottery and porcelain, and their invention is an important process of human civilization.

As early as hundreds of thousands of years ago, in ancient times, ancestors around the world learned to use fire. In a long primitive life, people needed utensils to fetch water and hold food. They found that the clay became very strong and watertight, so they kneaded the clay into pots, plates, basins, etc., and then roasted them with fire, which is the earliest pottery.

At that time, there was no special kiln, and the firing temperature was only about 700 degrees.

Later, people gradually learned to choose clay as a material, using potter's wheels, molding and other methods to process into bowls, cups, bottles, urns and other more complex shape utensils, and built a special firing kiln, which was roasted and formed at a high temperature of 800 900 meters. Due to the different elements contained in clay, there are gray pottery, red pottery, white pottery, black pottery and other types. People who love beauty also paint patterns on pottery blanks, and form colorful paintings after firing, which is faience.

In some places, pottery with surface glaze was also created, called glazed pottery. The famous terracotta warriors and horses of the Qin Dynasty and the Tang Sancai of the Tang Dynasty both belong to glazed pottery. To this day, the purple clay pots, glazed glass and pottery sculptures produced in some places are still deeply loved by people.

Porcelain is a unique invention in ancient China, which was gradually explored by people in the experience of firing pottery. The difference between porcelain and pottery is: the raw material for porcelain must be porcelain clay or kaolin rich in minerals such as quartz and sericite, the firing temperature is above 1200, the body is completely sintered and vitrified, and the surface layer has a glazed surface fired at high temperature.

Porcelain first appeared in the Eastern Han Dynasty, when porcelain was mostly cyan due to the iron contained in the raw material. After the Wei and Jin dynasties, the porcelain-making process has been greatly improved. In the Tang Dynasty, two major kiln systems were formed: Xingyao white porcelain in the north and celadon in the Yue kiln in the south, in addition to snowflake glaze, tire glaze and underglaze colored porcelain and sticker decoration.

Some of the porcelain was exported overseas, and became a favorite treasure of the royal family and the upper class of the aristocracy.

The Song Dynasty was a period of unprecedented development of the porcelain industry, porcelain kilns spread all over the north and south, in addition to the two major porcelain systems of blue and white, there were also black glaze, blue and white glaze and painted porcelain, etc., the quality was thin and the color was moist, smooth and exquisite. In the Yuan Dynasty, there were famous blue and white porcelain and glaze red porcelain that used cobalt or copper red material as a coloring agent to paint on the tire, and then covered with transparent glaze and fired at one time in high-temperature reducing gas. In the Ming Dynasty, there was great development from billet making, decoration, glazing to firing technology, and red, green, yellow, purple and other glaze colors were added to the underglaze blue and white porcelain, that is, the famous "doucai" and "five-colored" porcelain.

In the Qing Dynasty, there were "pastels" painted on white glaze and then fired at low temperature in the furnace and "enamel color" porcelain with the effect of imitation copper tire painting enamel.

Chinese porcelain-making technology first spread to Korea and Japan in the 10th century, to Persia and Arabia in the 11th century, and to Italy and other European countries in the 15th century. In modern times, some countries in Western Europe were able to produce high-quality porcelain, and new varieties such as memorialized porcelain were invented.

c Analysis: This question tests students' knowledge of the historical facts of pottery. According to the content of the textbook and the knowledge learned, it can be seen that the firing temperature of pottery is generally lower than that of porcelain, and the lowest is even below 800, and the highest can reach about 1100.

The firing temperature of porcelain is relatively high, most of them are above 1200, and some even reach about 1400. Therefore, the temperature required to refine pottery should generally reach about 1000 degrees, so C is chosen. Test Center:

Pottery Comments: This question is less difficult, and it mainly tests students' understanding of the historical facts of pottery. For this content, it is also possible to examine the value of pottery inventions.

The firing temperature of the pottery is 700 800. （

a.Correct fighting is filial piety.

b.Mistake. Correct Answer: Blank Manuscript A