Is it true that no matter what kind of clay you can make porcelain?
Not all clays can be used to make porcelain, and the production of high-quality porcelain requires the use of specific raw materials.
In particular, materials such as china clay and china stone have unique physical and chemical properties that ensure the quality and durability of the porcelain.
In addition, the production of porcelain requires rigorous processes and techniques and therefore requires specialized training and practice to master.
Pottery and porcelain mainly have the following differences:
1. Density is different, fired porcelain is denser, and pottery or coarse porcelain will absorb water with voids.
2. Different materials, porcelain is mainly kaolin clay, feldspar, quartz sand, etc.
3. Firing temperature is different, porcelain is 1200 degrees Celsius, and pottery is generally 800 degrees Celsius.
4. The glaze on the surface of porcelain is a firing, and pottery is not necessarily, and some pottery even has no glaze.
Ceramic raw materials mainly include the following:
1. China clay: one of the main raw materials of porcelain, mainly refers to kaolin and china stone two.
2. Bauxite: bauxite is a clay-like aluminate mineral, commonly used in the production of porcelain binder.
3. Quartz sand: a very hard mineral, often used in porcelain glaze.
4. Feldspar: a mineral containing sodium, potassium, and aluminum, often used in porcelain glaze.
5. Sand: fine mineral particles, commonly used in the production of porcelain tires and glazes.
It should be noted that, although the types of raw materials for porcelain production are relatively fixed, different regions and different production processes of porcelain used in the raw materials and formulas will be different.
So different porcelain will have different styles and characteristics.
In addition to the porcelain raw materials mentioned above, some auxiliary materials are also very important and have a great impact on the production and quality of porcelain. These include the following:
1. Paint: paint and color materials for the surface of porcelain.
2. Ink: used for painting and printing of porcelain.
3. Adhesive: Adhesive is used in the making and repairing of porcelain.
4. Sintering additives: in some cases, the a need to add sintering additives to improve the sintering properties of porcelain.
In short, the production of porcelain needs to use a variety of different raw materials and auxiliary materials, their types and ratios for the production process and quality of porcelain have a great impact.