Whether Tianfu purple sand pot is chemical material, how to identify chemical purple sand pot

The purple sand pot is generally made of raw purple sand mud, and generally no chemicals are added, unless a low-cost pot of 30-50 is willing to be made with chemical raw materials.

To identify a pure purple clay pot, you must first learn three steps: look, listen, and touch.

First, look at the color: the color of pure purple sand, whether purple, yellow, red or the color between the two should have a jade-like charm, its light quality is a gloomy light, like oil, the more rubbed the more moist, can not wax, can not polish, can refer to the material effect of old jade, the rarer the material, the more valuable, because of limited resources.

2. Listen to the sound: The purple clay pot is the top product of pottery, so the sound of the pot is the sound of pottery. After making tea, the sound is sandy, dumb, and deep, not as crisp as metal sound or porcelain, and the hoarse sound indicates that the material has good air permeability, and the interior is not crystallized, which can maintain the fragrance of the tea and is not easy to change the taste.

3. Feel: The hand of the purple sand pot is smooth and round, comfortable, although there are particles but very round, the purple sand particles are generally suitable for 32-60 mesh, through traditional manual processing, the feel of the stone grinding sand powder and the feel of the sand powder processed by the machine are different.

Although I also grew up in the teapot pile, but I also know a few methods, the first is to look at the feel, if the body of the pot feels slimy, it is generally waxed, there are many kinds of wax, I won't be specific, the raw ore mud feels very refreshing.

Second, pour boiling water into the teapot and cover the kettle If the pot body has continuous steam coming out, and it is a uniform kind, the mud will not be bad, and the air permeability of the raw ore purple sand mud is very good.

Third, pour a cup of boiling water on the pot full of hot tea, the pot will become dry immediately, and if other ingredients are added, it will not dry quickly.

The last point, good goods are not cheap, cheap goods are not good, the cross mantra...

These are some small experiences that I usually observe, just for lz's reference.

First of all, don't want to buy high-end things for dozens of dollars, because no merchant is willing to buy and sell at a loss, don't think that you have made a bargain, and secondly, look at the color, the pure mud color will not be very bright, too red or too green will definitely not work. Then look at the workmanship, you just have this mentality, because no one wants to take very bad mud to make high-end pots, it will only ruin their reputation, generally good pots with good mud, low-end pots with low-end mud.

Price. Less than 100 dollars? It won't be a good pot.

Quality. Very shiny? The color of the lake is very restrained, and there will be no exaggerated luster. It feels moist to the touch and is not rough.

There is no such thing as a fade or a fade.

The real purple clay pot does not fade when it is opened; The chemical pot will fade when boiled in boiling water. This is the easiest way to do it.

As shown in the figure, the dots - it is reflective - it is right - it shows the crystals in the purple sand, but not the purple mud. Try again: Splash the hot water up, whether it will be sucked up quickly, if yes - it must be purple sand.

It is purple sand, but it is not a very good material, the material is uneven, and the process is average, because it is broken, the shape cannot be seen!

Duan mud, to be precise, is sesame Duan mud. It contains a lot of iron, and the material is very average.

Artificial mud, the original ore section mud base is extinct, bargains, chemical pots, mold pots, more than 150 yuan will be lost.

1. The mud with added chemical raw materials is the opposite of clear cement.

As we all know, the number of purple sand ores is very small now, so the materials used in many pots on the market may not be real or pure purple sand. After looking at too many pots, I found that there is a serious problem in the market now, which is to cut corners in the process. The original mud must be refined through multiple processes before it can be used, and one of the key steps is that the purple sand raw ore must be naturally weathered in an open-pit environment, which takes time.

However, some people who make pots now, in order to shorten the production period, most of them do not go through the process of natural weathering, but simply rely on mechanical equipment to grind them, this difference is fatal, many pots seem to be very good at first glance, and the sand grains are more obvious, but in fact they belong to the "ripening" thing, and there is a big difference between using it and really good materials.

2. Sand adjustment refers to the purple sand mud that has been screened and washed by fine mesh, which is particularly delicate and contains no impurities. "Sand" refers to purple sand, and the purpose is to screen out fine particles.

3. Duan mud, a symbiotic mineral soil of green mud and purple mud in the mountain. Benshan green mud and purple mud are both raw ores of purple sand. The meaning of symbiosis is that it is naturally formed, and the properties of the two muds are the same, especially the plasticity and firing temperature will not be significantly different.

The original ore of the section mud is currently very rare, and now the Yixing pot makers have begun to use the green mud and purple mud of the mountain to artificially mix to form an unnatural section of mud. The artificially blended section mud can be used, in fact, it is more difficult to grasp and control than the original ore, because the blended section mud not only has uneven particle size and distribution of purple mud, but also is prone to tail traces during production, and the shrinkage and firing temperature are inconsistent during firing.

A good section of mud is characterized by the fact that the purple mud particles are not very obvious. It seems that the green mud of the mountain only plays a role in changing its color. There are layers, like jade.

Duan mud can not burn the green color of the mountain, and the green mud of the mountain is a very delicate and pure yellow color. Some sections of mud are not very good, but they are stale for a long time and are well handled, which is also very good. The fly in the ointment is that the purple mud particles are obvious, and it feels a little miscellaneous.

The new Duan Mud, perhaps because of the problem of treatment, is indeed inferior to the old Duan Mud, and the visual appearance is not as smooth as the old Duan Mud.

Recommend**.

1. Chemical materials.

1) Add an appropriate amount of iron red powder to Fudong red mud to make cinnabar mud, Dahongpao mud and Yan red mud.

2) Add an appropriate amount of iron red powder to the white mud to make vermilion mud.

3) Add an appropriate amount of manganese oxide to the purple mud to make it dark brown.

4) Add cobalt oxide and manganese oxide to the purple mud to make black mud.

5) Benshan green mud and a small amount of white mud are combined, and then an appropriate amount of chrome green is added to make vegetable eggplant puree and bean blue puree.

6) The green mud of this mountain is mixed with a small amount of white mud, and then an appropriate amount of cobalt oxide is added to make dark green mud.

7) Add an appropriate amount of cobalt oxide to the green clay of Benshan to make green clay.

8) The green mud of this mountain is mixed with a small amount of white mud, and then an appropriate amount of chrome tin yellow is added to make loquat yellow, sunflower yellow mud, red eel mud, and osmanthus mud.

Add chemicals for bright colors, or imitate precious clays, or simply shoddy.

2. Sand blending. Sand adjustment is a mud training method.

Q: Is there anything bad about sand mixing?

A: When the sand is burned, it looks better, but the disadvantage is that the pot is slow, the change is small, and the pores are few.

Q: Does sand mixing not affect the essence of the mud? So why can you still see sand, isn't it one of the signs of pores?

A: The whole sand can also be adjusted, and the mud pores of the slurry are less. For example, the whole sand material may be composed of 100 yards of particles, and the slurry is 200 yards, or even 300 yards, that is, some so-called purple vermilion mud. It's denser, and it looks smooth and bright.

Q: The essence of the material is not affected, is it?

A: The whole sand will not, and the refraction of the particles makes the pot surface not look very good after leaving the kiln.

Q: How to distinguish slurry (sand mixing)?

A: Under the sun, look at the surface of the pot, there should be particles, not like mud. Purple sand is not mud, it is made of sand. The raw ore, a natural thing, will not be a color, there will be a change in the mud itself.

3. Duan mud. Duan mud is a raw ore, is a symbiotic mine of Benshan green mud and purple mud, and the artificially blended Duan mud is Benshan green mud added purple mud.

This pot is a Buddha bead pot, and the text on the pot is "Prajnaparamita Heart Sutra". It is a pot made of purple mud and mud, and the workmanship is acceptable!

Groove please purple mud is not this color.

In recent years, the purple clay pot has risen in the auction market, and the works of famous masters are even more difficult to find. However, there is also a lot of chaos in the hot purple clay pot market, and the large number of purple clay pots has flowed into the market, causing an impact on the market.

It takes at least half a month for a handmade purple clay pot, while the pot copied from the mold only takes three or four days at most, the production time is four or five times different, and the price is five or six times different. The handmade purple clay pot will have its obvious characteristics, first of all, the body of the purple clay pot will leave obvious traces left by the craftsman when he pats the body, of course, there are also handmade pot bodies that need to be carefully looked at to be seen, but in any case, the artists will not easily erase these traces that can prove that they are all handmade. In addition, because it is completely handmade, so the lines of the body of the pot, the arc will not be very perfect, often slightly undulating, the lid may also have a slight difference with the spout, at first glance, you may feel that the pot is slightly rough in the production, but full of bearing, but these will not only not affect the overall beauty of the pot, but this will also be the best way to say that it is all handmade.

The so-called "machine pot" refers to a fixed mold on the production line, which only needs to be filled with mud by workers, and then after a series of processes such as firing, it is finally made into a finished pot. Because this kind of production takes less time and the price is much cheaper, this kind of pot is not called a purple clay pot in the industry at all. There is also a kind of pot made of purple sand, but it is semi-mechanical and semi-handmade, each of which is about a few hundred yuan, and is generally used for self-use and does not have collection value.

The real purple clay pot is made by hand, and the price ranges from thousands of yuan to hundreds of thousands of yuan. How to distinguish between a handmade purple clay pot and a machine pot.

The inner and outer walls of the purple clay pot made of the mold are polished relatively smooth, and the handmade pot should be finely polished on the mud bench, and the wood grain of the mud stool will be left on the inner wall after it is done.

The bottom and wall of the pure handmade purple clay pot are carried out separately, but the purple sand mud is modulated at the same time, and this time difference causes the pot to form a circle of obvious inlay marks at the bottom of the pot after being burned. If it is a purple clay pot made of mold, after it is burned, there are no obvious traces at the joint of the back bottom cover.

The handmade round pot has only one joint, and an inconspicuous seam line can be seen in the handle of the pot. The pot formed and fired by mold has a relatively obvious seam line on the inside of the spout and handle.

However, the value of a pot lies in whether the spirit and charm of the pot are sufficient and full, whether the pot shape is regular, whether the proportion is harmonious, whether the mud is good, and whether the workmanship is meticulous. whether the curve is natural; If it is a flower product, then whether the flowers and trees on it are natural and natural, without any pretentiousness. As long as these requirements are met, semi-manual and full-manual work will become less important.