What are the benefits of purple sand teacups?

Teapot is a practical tea drinking appliance and a work of art with appreciation value. Its external value is a real horn vessel, and its internal value is a fine work of art. The beauty of teapot lies in its integration of mud, color, shape, form, seal, inscription, painting, book, carving and seal cutting. According to scientific analysis, the teapot does retain the original flavor of tea soup, can absorb tea juice, and has the characteristics of cold and heat resistance. To sum up, teapot has five characteristics: first, teapot is a pottery made of sand, which has neither stolen the aroma of tea nor the taste of cooking soup, so it is used to make tea with rich color, fragrance and taste. Second, the sandy teapot can absorb the tea juice and make the "tea rust" accumulate in the corner for a period of time, so there is tea fragrance when boiling water is injected into the empty pot. Third, it is easy to wash. If you don't use it for a long time, it will inevitably smell. You can make tea with boiling water two or three times, then pour cold water, and then make the same original tea. Fourth, it has strong adaptability to sudden changes in heat and cold. In the cold winter, the injected boiling water will not burst due to the sudden change of temperature; Moreover, the heat transfer of sand is slow, and it is not hot whether it is lifted or held. Fifth, purple sand pottery is resistant to burning, and it is not allowed to explode on a warm fire in winter. It is no accident that Su Dongpo made tea with a teapot made of purple sand pottery, and there was a poem "The bamboo stove relaxed the wind and lifted the pot to shout". This is why people who pay attention to tea drinking at all times and in all countries especially like to use teapots. On practicality, teapots are used for making tea and making tea. It has long been concluded that the performance of teapot is "color, fragrance and taste". Moreover, scientific institutions have also made a detailed test of "the summer months are getting worse and worse", and the angle casserole and ceramics have indeed confirmed that casserole is much superior to ceramics. This conclusion is based on the uniqueness of purple sand raw materials. The teapot is practical, because of its high porosity, which makes it have the advantage of good permeability. According to the History of Du Tao in China on page 394, purple clay is characterized by high iron content ... and there are a lot of aggregates in the microstructure of purple clay. There are two kinds of pores, one is the pore inside the aggregate, and the other is the pore group wrapped around the aggregate, most of which are open pores. The good permeability of purple clay may be related to this special microstructure. According to the determination of physical and chemical properties of various clays by Yixing Ceramic Company, it is found that the porosity of purple clay is as high as 10%. Therefore, it shows that good air permeability is of course the main reason for "rich color, fragrance and taste of tea" and "staying up late in summer". The good plasticity and bonding ability of purple sand mud are the reasons why it is beneficial to craft decoration. Moreover, the firing temperature range of purple mud is very wide, from 1 190 degrees Celsius to 1270 degrees Celsius. At present, the firing temperature is controlled at about 1200 degrees Celsius, which is another reason why purple sand products are watertight and not aging, and the more they are used, the more shiny they become. All the above shows that this kind of purple sand soil mixed with fine sandy sandstone is the best clay for making pottery pots and a unique treasure in Yixing, Tao Dou. Just think, why do people call purple sand ware unique? In fact, it is unique: unique raw material composition, unique practical performance and unique artistic value. Therefore, it is well-deserved that Zisha pottery has become a famous pottery in China.