"Fiona Fang" brand is the only well-known trademark in Yixing purple sand industry. At the same time, it is suggested to visit Puzhi Tiancheng in Fiona Fang. His purple sand health pot is made of Yixing purple sand mud, and the boiled water is very healthy.

Introduction of teapot

Yixing teapot is the most famous. Yixing teapot tea has no real fragrance of tea and soup, and can keep the color, fragrance and taste of tea for a long time. Purple sand tea set is also favored by people because of its simple and unique shape and excellent temperament. After being soaked in tea and rubbed by hand, it will turn into ancient jade color.

Purple mud is really a unique raw material in Yixing. It has all the chemical and mineral components needed for making pottery. Microscopic observation shows that the main minerals of purple mud are Yingshi, clay, mica and hematite.

Reasonable chemical, mineral and particle composition makes purple mud have good technological properties such as good plasticity, high green strength and dry shrinkage. The fineness of purple mud grinding should be screened by 60 mesh sieve.

It takes time and effort to make the mud too thick; If the mud is too fine, it will stick to the hands, causing the surface of the blank to wrinkle, and at the same time, it will also cause dryness and increase the shrinkage during firing. In the molding process, the key work is to complete the whole device and form a compact skin.

Because of the existence of cortex, the firing temperature range of the product is expanded. No matter at the upper or lower limit of normal firing temperature, the cortex is easy to sinter, but the inner wall of the pot can still form pores.

Therefore, the finishing process of molding has the function of organically connecting mud, molding and firing, giving purple sand a smooth surface, not glazed but full of luster, although it has a certain porosity and no leakage.