Dragon blood sand
In 2007, Zisha Road was built in Dingshu Town. On the No.3 slope of Huanglong Mountain, about 50 meters away from Dashuitan, a trough of red purple sand ore source was dug up. It is said that a trough is actually only a very thin layer, with the thickest part not exceeding 15cm, sandwiched between two huge stones, and the number is extremely rare, with the total amount exceeding 3 tons. According to the mining master, he has been a miner in Huanglong Mountain all his life, and this is the first time he has seen this crimson mine source. This is dragon's blood. Jiangnan people call blood "king", saying that using this teapot will bring wealth and good fortune.
After professional testing, Fe2O3 is as high as 23.46, which is the highest iron content known at present, about 3 times higher than that of ordinary purple mud. The color of different kiln temperatures varies greatly, and many black stars will appear on the surface at high temperature. The optimum kiln temperature is 1 160℃, which is typical of China red.
Dragon's blood sand is almost completely granulated and has poor viscosity. Even if it is crushed to 100 mesh, it is still difficult to form after tempering. For this reason, once fired, its air permeability is better than that of the bottom tank. Fired into pottery, tasteless; It is beautiful to cultivate jade. Suitable for all kinds of tea, without losing fragrance, taste and tea, with unparalleled reducibility. It is the best choice for players and collectors.