What are the mud materials commonly used in teapot?

Tank bottom mud material. Mud is generally divided into three series, purple mud, red mud and Benshan green mud. All the mud can not be separated from these three main mud. Clear cement belongs to purple mud, Zhu mud belongs to red mud, and the mud in Qinghe section of bottom trough is * * * raw ore.

Bottom groove mud is the best purple mud at present.

Benshan green mud: it was called "pear skin mud" in ancient times. The mineral soil is light green and flaky, and the pear skin is frozen (beige) after firing into pottery. It is only a few centimeters thick and is located between the upper layer of purple mud and the rock plate, commonly known as "dragon rib"

At present, Duan Mud raw ore is very scarce and expensive. Now Yixing pot makers have begun to manually mix Benshan green mud and purple mud to form unnatural Duan Mud.

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Extended data

The main component of purple mud is hydromica, which contains different amounts of kaolin, quartz, mica and iron. Comprehensive analysis shows that purple clay belongs to granular soil-timely mica series, and its characteristics are similar to those of porcelain-making raw materials. Therefore, a single raw material has ideal plasticity, high strength and low drying shrinkage, which provides good technological conditions for various shapes.

Green mud is the grease in purple sand mud, so it is called "mud in mud" (Tuanshan mud is a mixture of purple mud and green mud). The output of green mud is not much, the mud is tender and the fire resistance is lower than that of purple mud. Generally, it is used as powder or pigment outside the matrix, which makes the color of Zisha pottery more colorful.

References:

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