My system is not decent

This kind of kaolin, named Ma Cang soil, is actually a kind of clay.

Its characteristics are also not good, simply using it to fire porcelain, the quality is not good at all.

This kind of porcelain made of Macang soil has a phenomenon called "scratched tire white" on the bottom tire, which looks very rough.

Of course, in fact, it feels very smooth, which brings a heartfelt surprise to those who have collected Yuan blue and white.

However, this is because the current price of Yuan blue and white is very expensive. If you look at it purely from an aesthetic point of view, isn't this a big defect?

It looks rough, which has nothing to do with beauty.

So, at this time, the contrast appeared. When you touch it, it is not rough, and it is even very smooth, which is full of surprises.

However, this does not mean that this roughness is not a defect.

But there is no way, the level of craftsmanship in ancient times was like that, and the blue and white of Yuan Dynasty at that time was already the highest expression of their craftsmanship.

In fact, there are many defects in Yuan blue and white, such as the flint red that appears, white but not fine, with many pores and moles, and many fired porcelains have bulges.

These are all natural phenomena formed by using Ma Cang soil.

Without Ma Cang soil, high imitation porcelain cannot be made at all, and these unique defects.

Antique means to imitate the defects and characteristics of the time.

If you want a 100% high imitation, it is best to thoroughly study the craftsmanship at that time, and then use the raw materials used at that time to make a 100% fine imitation.

Fortunately, modern people can analyze the composition ratio of Ma Cang soil in Yuan Qinghua, and Chen Wenzhe also clearly knows the production process of Yuan Qinghua.

He even knew how the ancients dealt with the Ma Cang soil. Perhaps it was in the process of processing the Ma Cang soil that the Ma Cang soil that we modern people know was finally formed.

Because Chen Wenzhe suspects that the so-called Ma Cang soil in our modern cognition is not all formed naturally.

Because many studies have shown that macang soil is also kaolin in essence, and its composition is not much different from the current kaolin.

From the test alone, there is no obvious difference between the two, which is very strange.

If you do further experiments and find that although there is no obvious difference in the composition of the two, the fetuses made are different. Can you say that the two are the same thing?

Of course it won't be the same thing. Obviously, Ma Cang soil should be a special kind of kaolin that has been processed.

Or simply put, the kaolin found on Macang Mountain is slightly different from other kaolin.

What’s more, they are all kaolin, and because the kaolin in Macang Mountain has been specially treated, it has become the Macang soil we see now. It is this kind of Macang soil that can be fired. blue and white.

No matter what the reason is, it has caused the specialness of Ma Cang soil.

However, there is a difference here.

If Macang soil is a real pure natural mineral material, which is extinct and extinct, then there is really no way to restore the complete craftsmanship of Yuan blue and white.

Macang soil must be a pure natural mineral material, but its special reason should be because of the post-processing method.

Therefore, it is unlikely that Yuan blue and white flowers can be fired with natural Macang soil.

It is more likely that Macang soil is not special, what is special is its processing technology.

And this is the result of Chen Wenzhe's recent research. Of course, the reason for this inference is because some interesting information was found inside the Pearl of Suihou.

Now Chen Wenzhe believes that Macang soil must be a natural mineral.

But after processing, it should be regarded as something else.

At least it becomes different from ordinary kaolin, so the effect of the final fired porcelain is also different.

For example, adding other elements, or removing some unnecessary impurities.

Anyway, the hemp warehouse soil must have changed, because Chen Wenzhe determined that the appearance of Yuan blue and white flowers did not rely on pure natural hemp warehouse soil.

Of course, what kind of changes have occurred in Ma Cangtu still requires Chen Wenzhe to conduct experiments.

And it's not too difficult to make, because he can see the process of making Yuan blue and white by ancient people in Yuan Dynasty.

In fact, things are not as difficult as the world imagines, because there are traces to follow in the development of things.

The discovery and use of kaolin in Jingzhen is accidental, but it is also inevitable.

The firing history of porcelain is very long, but in the Yuan Dynasty, due to the pressure of the exhaustion of porcelain clay resources, Jingzhen began to try to use other types of porcelain clay to fire. .

As long as you are not stagnant, as long as you want to work hard and make progress, no matter what you do, you will make some progress.

Therefore, in the Yuan Dynasty, Jingzhen's porcelain making technology began to break through.

During that period, they finally discovered kaolin, an excellent material for firing white porcelain.

Gaoling is a small mountain village in the northeast of Jingzhen. The kaolin clay mined from Gaoling Village is washed and made into square brick-like soil clods.

This is called dunzi locally, and it is transported to the pier at the foot of the mountain, and then transported to Jingzhen via the river.

Although a new type of porcelain material has been discovered, it cannot replace the original porcelain clay.

In fact, kaolin cannot be used alone to make porcelain.

Kaolin is a relatively common resource, and it has always been available in Europe.

This is also the reason why Europe did not have the ability to produce porcelain before the 18th century.

Its use is that by adding the original porcelain stone material and mixing it, it can greatly improve the hardness and whiteness of porcelain.

The quality of this new mixed material surpasses even the highest quality porcelain stone material.

The craftsmen in Jingzhen have a vivid metaphor for the mixture of porcelain stone and kaolin, kaolin is bone, and porcelain stone is flesh.

Only when the bones and flesh are even, can the best quality white and clean porcelain be fired.

Historically, this mixture has been called a "binary formula".

Please note that many porcelains before the Yuan Dynasty were fired with low-temperature glaze.

It was the discovery of kaolin, mixed with porcelain stone, that produced the current high-temperature glazed porcelain.

There is still a big difference between high-temperature glazed porcelain and low-temperature glazed porcelain, and the advantages are even greater.

There is a difference in the firing temperature of these two glazes. For ceramics using high-temperature glazes, the firing temperature is above 1200 degrees.

For ceramics with low-temperature glazes, the firing temperature is between 700-900 degrees.

Porcelain with high-temperature glaze has a fuller color than low-temperature glaze.

The color of low-temperature glazed porcelain is relatively dull.

Then there is the feel of ceramics. Porcelain with high-temperature glaze feels smoother, while porcelain with low-temperature glaze is slightly rough.

In other words, porcelain fired with high-temperature glaze is more beautiful.

For example, jadeization, vitrification, etc., which are pursued in low-temperature glazes, can be easily realized on high-temperature glazes, and this is the biggest difference.

It can be said that the use of kaolin is a breakthrough by leaps and bounds.

7017 k