Understand the Tea Emperor and invite professionals to answer questions for tea friends. Our principles are: not flickering, not showing off, not malicious attacks, not deliberately beautifying, just answering your question objectively and neutral. Even if there are some questions without standard answers, we will try to be objective.
The tea friend “Xin Yin” sent a purple sand pot (see the figure below) to understand the tea emperor a few days ago, and the appearance was green, but he didn’t know what the pot was, and asked, “What kind of mud is this pot? What is it? Is it a factory? Can it be used for tea? “
▲ The pot of the tea friend “Xin Yin”
In this regard, Xiao understanding Xu Jianjun, a national arts and craftsman and a teapot designer. Teacher Xu analyzed that this pot is green mud, not a factory pot, the pot type and workmanship are very good. You can drink tea, but tea should not be soaked in the pot too long. The mud of this pot contains chemical raw materials, and the proportion of chemical materials is slightly more than normal.
Emma, don’t understand, isn’t purple sand and green mud like this green? Teacher Xu Jianjun said that the proportion of the chemical material of the tea friend “Xin Yin” is slightly more. Why is it seeing it?
Teacher Xu explained that because the color is wrong, if the original ore purple sand mud, you can’t make this color, you must add some pigments.
So what color is the real green mud? In order to facilitate everyone’s comparison, Teacher Xu specially sent a pot to Xiao understands, which is the original ore green mud pot that he has collected for many years. Let’s take a look together!
▲ The original ore green mud purple sand pot (the national arts and craftsman Xu Jianjun confessed, please indicate the source)
ah! This is clear. The color of the pot of the tea friend “Heart” is dark green and the green is very positive, but the color of the pot made of the original ore green mud is slightly yellow. The two are very different! Dear, did you remember?
About green mud
Green mud, commonly known as “mung bean sand mud”, ancient clouds “bean blue color”, mud color resembles mung bean skin, grass green. The quality of the pot is simple, the sandy texture is delicate and full of grain. The pot color is green and green, and it gradually turns into a warm and bright color after breeding.
▲ The picture comes from the Internet
The green mud is produced in the ore veins of Huanglong Mountain. The output is not much, the mud is tender, and the fire resistance is lower than the purple mud. The color of the original ore is green and gray, and the rocky or powder -shaped shape will be contaminated with the color of the raw ore powder in the hand. It is also often used as a powder or coating outside the fetus to make the color of the purple sand pottery more colorful.
Tea friend “Ding Nailong”:
“Green Mud of the Republic of China”, also known as “dark green mud”, is a green mud. It is a kind of purple sand -colored mud made of color metal oxide, etc., and adds an appropriate amount to the green mud of the mountain. After firing, it is dark green to dark green. The shades of coloring are determined with the amount of cobalt oxide. This configuration method began with Wang Shijie, the principal of Yixing Ceramics Vocational School during the Republic of China, so it is called “the Republic of China Green”. The kiln temperature is about 1150 ° C, and the contraction ratio is about 15%. Suitable for brewing oolong tea with light roasting series.
The green mud of the Republic of China is 100%of the mountain green. The color material is to refine the pure cobalt oxide. It is not poisonous and the price is expensive. After more than 1100 ° C at a high temperature, cobalt has been completely toxic. There are some kinds of pots on the market, green, green, and green. The green pot is definitely not “green mud” in the Republic of China.
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