Are chemical ceramics harmful to people?
Chemical ceramics are made of plastic clay, feldspar, pyrogem or bauxite and other raw materials. They are made into green bodies through the processes of crushing, slushing, chipping, manual tamping, printing, casting, and other processes, which are calcined at high temperature. According to the classification, there are pumps, blowers, printing machines, valves, containers, towers, fillers, acid and temperature resistant bricks, etc.

It has excellent corrosion resistance (except hydrofluoric acid and concentrated hot alkali). In all inorganic and organic acids, its corrosion resistance, wear resistance, non-polluting media and other properties are far from that of acid-resistant stainless steel. .

Widely used in petrochemical, chemical fertilizer, pharmaceutical, food, papermaking, smelting, chemical fiber and other industries.

The operating temperature range is -15 ~ 100 ℃, the temperature difference should not be more than 50 ℃.

Main disadvantages: brittle quality, low mechanical strength and poor resistance to hot and cold rapid changes.

In recent years, high-strength, high-density silicon nitride, silicon carbide, silicon oxide, and alumina special chemical ceramics have appeared. However, ordinary chemical ceramics made of clay and other silicate minerals still have the advantages of low price and easy to be made into large sizes.

The part of the ceramic tableware that may be harmful to the human body is the heavy metal contained in the pigment added to it after firing, so choose no pattern or the pattern is under uranium.

Judgment method: see whether the pattern is convex or smooth, the convex is generally the decal process, there will be pigment, and it will fade after a period of use.