Old purple mud, where's old? Where's good?
Old purple mud, where's old? Where's good?
On hearing the word "old purple mud", people feel that this is a very qualified mud, as long as you buy the pot made of it is worth the money. Although it sounds so, in fact, it is even more so!
First, what is old purple mud?
Old purple mud focus on this "old" word, there are many arguments, including sand heavy, stale long two.
1, sand heavy
The so-called old, refers to the old block of purple mud ore, sand heavy ore, its quartz particles, mud used to make pot, molding difficult, sintering temperature is high. Bottom trough green is one of the typical. It's very sandy. It sinks in the bottom trough. This statement is because of its heavy sand, difficult to do, to describe its mud, so it is called old purple mud.
2. Stale time
The so-called old refers to the stale time of mud, and the long stale period is called old mud. The plasticity of the old clay billet is relatively high, the color is relatively warm after firing, and the short-term soaking is smooth and elegant. The decay period of mud is, in a sense, the longer the better, but the mud with too long a decay period needs to be refined again before making the pot. This statement believes that the stale time is long, and the old is used to describe its long time, so it is called old purple mud. However, there are some old purple mud, because the characteristics of the mud are very close to the old mud, whether it is used and soaked, hydrated and easy to wrap the pulp, there is basically no difference with the former (most of the old purple mud belongs to this type at present).
Two, old purple mud color
On the explanation of the old purple mud, there is no conclusion in the industry, the above two explanations are more scientific. According to these two accounts, in addition to sand and easy to soak, old purple mud does not show a specific color! To sum up, it is not dark purple mud, it is old purple mud, pot friends must distinguish this point clearly.
The color of the purple clay pot is only related to the ratio of mud and the firing temperature.
And the old purple mud belongs to the old mud in the purple mud, (in other words, the purple mud with a long time of decay), so the purple mud is a greater probability than the old purple mud, and the old purple mud is in the category of purple mud. The relationship between the two is the relationship between inclusion and inclusion, not the difference. Mud with a long time of decay is easy to nourish and fast to wrap.
The decay period of mud is, in a sense, the longer the better, but the mud with too long a decay period needs to be refined again before making the pot.
Stale is not simply "placed for a long time", but the wet clay blocks are put into the cellar kiln or pottery jar that is opaque to sunlight and air, and a certain temperature and humidity are controlled to facilitate the generation and play of humic acid.
Most of the stale time takes 12 months to become a uniform distribution of water, the full decomposition of organic matter, plasticity enhancement, molding is not easy to crack "saprosol", commonly known as "raw mud". Stale and fermented mud is called "raw mud", "raw mud" has to be added by the teacher himself on the mud bench before the remaining "cooked mud", and then tempered again, in order to become the "cooked mud" that can achieve the ideal plasticity and uniformity of the pot.
Third, the characteristics of high-quality old purple mud
1, old purple mud has the general characteristics of high quality purple mud, that is, old purple mud is a high quality purple mud.
2, old purple mud after a long time of decay, mud results in more gum, used for making pot molding easy, packaging fast. High quality purple mud is "sand heavy" mineral material, its quartz particles, normal stale mud used to make pot, molding is difficult, sintering temperature is high.
3. Old purple mud and high quality purple mud are both fast and breathable. High-quality purple mud will generally be stale for a long time, and the stale time of old purple mud is longer than the stale period of general purple mud. Therefore, sometimes we feel that the formation of a purple clay pot is only a short time, but behind it, it is several years of intentions.
