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Since you want to burn emerald blue porcelain, you must understand the entire production process of this kind of porcelain.

First of all, it is necessary to understand the difference between Kangxi emerald blue and sapphire blue.

Kangxi emerald blue is what people call the glaze color of Kangxi blue and white, and it is the representative color of Kangxi blue and white.

The mainstream is green and rich, with distinct layers, which is the peak of blue and white porcelain in Qing Dynasty.

Sapphire blue is a blue color that is a bit darker than dark blue and more purple, representing calmness, wisdom, etc.

It is a crystal clear blue, which is more color-dependent than ordinary.

The glaze surface of the sapphire blue glaze in the Kangxi period has orange peel brown eyes and air bubbles, which are relatively evenly distributed.

Of course, some glazes appear vertical flow.

The Jilan glazes produced during the Kangxi and Yongzheng years were all imitated from Xuande in the Ming Dynasty, with plates and bowls as imitations.

The early Qianlong period was similar to that of Kang and Yong.

But in the later period, it was more refined. In the late Qing Dynasty, Jilan was rare, and the glaze was not uniform enough.

Today's sapphire blue glazes are mostly imitated from ancient official kilns, and Jingzhen's sapphire blue glazes have reached a very high level.

If you want to imitate the emerald blue works of the Kangxi period, not only the glaze color, but the craftsmanship, the first thing to pay attention to is the signature.

In the emerald blue works of this period, double-circle models, flower-leaf models, and animal models are common, and many utensils are not identified.

This point must be understood clearly, because it is not a simple word.

Then there is the fetus, most of Kangxi's blue and white fetuses are heavy, and they feel a little heavy.

On the bottom of the utensil circle, brown eyes and dot-like deposits formed by firewood kiln firing are common.

The second is the painting style. The works of this period still have the legacy of the late Ming Dynasty.

Some use double-line to outline the pattern and then fill in the color;

Some are in various ways such as splitting axe, wearing mochi and so on.

Besides the ornamentation, the content of the Kangxi blue and white ornamentation includes swords, horses, ancient allusions, dragons, phoenixes, auspicious animals, figures, animals, plants, and long texts.

Finally, there are two kinds of blue and white materials used in Kangxi blue and white porcelain.

One is pearl material and the other is Zhejiang material.

Pearl material, blue and white hair color is emerald blue;

The real color is bright blue and green, without floating feeling, clear and gorgeous, clear and not muddy, colorful but not vulgar.

Some are sapphire blue, bright blue but not angry.

It is very different from the blue and white flowers of other dynasties in the Qing Dynasty. The characteristics of the times are very obvious, and a new artistic appearance has been formed.

Zhejiang materials are no good. The blue and white color is gray-black, gray-blue, and it feels floating and miscellaneous.

The hair color of Kangxi blue and white is multi-colored, and Jimo is divided into five colors.

The refining method of Kangxi blue and white is the fire calcination method used in the late Ming Dynasty.

The blue and white hair color is purer, richer and brighter.

The firing level of blue and white porcelain was first promoted by Yongxuan in Ming Dynasty, and what can be compared with Su Maliqing is the emerald green blue and white porcelain of Kangxi in Qing Dynasty.

Friends who are familiar with ancient porcelain know that pearl material is an extremely commonly used blue and white material.

Especially after the Jiajing period of the Ming Dynasty, pearl materials were gradually used as the main green materials.

The pearl material is rich in iron, and after firing, it will naturally flow down a little, making the picture faint like a fairyland, with a rare ancient flavor and a natural sense of artistic conception, which is very rare.

So how can you get emerald blue?It depends on how the pearl material is used.

"Pearl material" is calcined from natural cobalt ore, which is a typical blue and white material.

Calcined and refined pearl materials are better in quality than raw materials directly used, and the color is also stable.

The grades are classified according to the different ingredients. The content of cobalt oxide in general products is less than 2%, and the content of cobalt oxide in top grade products can reach 8-9%, so there are often changes in hair color.

Here is the key point, the content of cobalt oxide, or the amount of cobalt oxide, determines the color of blue and white hair.

This is also the case on Yuan blue and white, depending on the amount of cobalt oxide, it determines the shade, or light and shade, of the blue and white hair color.

The natural pearl material used in the past must be natural, so it is difficult to grasp the amount of cobalt oxide contained in it.

This is the root cause of the high randomness in firing emerald indigo, and as long as this is controlled and a suitable pearl material of the same kind is prepared, emerald indigo can be fired stably.

In ancient times, or in the Kangxi period, they were limited to technology and their understanding of mineral materials, so they couldn't do this.

Because of the natural pearl material, the dispersion is large, the cobalt content is not much, the manganese content is the most, and the iron content is the second.

The cyan color of the pearl material is due to the effect of cobalt.

Compared with metal oxides such as manganese, iron, nickel, and copper, cobalt has more elegant hair color.

Natural pearl material, showing a steady blue color!

The cobalt oxide used in the synthesis of pearls, although it has a very gorgeous blue-purple color, is always different from natural pearls and lacks some ancient flavor.

There is a saying that the real Kangxi blue and white ink is divided into five colors!

This refers to the mid-Kangxi period, when the emerald blue and white material was made of pearl material, the blue color was slightly greenish and purple, and the tone was rich and colorful.

During the Kangxi period, the craftsmen were able to master the properties of cobalt proficiently.

They use the "water splitting method", "axe splitting method", "piping mochi method", etc., the shades are too natural, the blue and white are beautiful and green, and the hair color is bright and fresh!

The picture is divided into shades and depths, and the scenery has levels of distance and nearness!

By dividing ink into five colors, the pen and ink interest of Chinese painting is fully expressed on porcelain.

And to do all of this, it must be inseparable from the research on pearl materials.

As for the characteristics of pearl materials, only if you are quite familiar with it can you accurately grasp the size of the pen.

It has various characteristics, so pearl materials are mostly used for decorative works, and landscape paintings are rare.

Because of its high difficulty in painting, the firing effect is not satisfactory.

For example, hard color and blue and white are all extremely expensive in Kangxi.

Chen Liu of the Qing Dynasty said in his book "Tao Ya": "The blue and white of the Yong (Zheng) and Qian (Long) dynasties are far inferior to the Kang (Xi) kiln. ) green is not as strong and beautiful as that of the Ming (Dynasty) green, but it can still stand alone in this dynasty."

Kangxi's emerald blue and white flowers are like the green of the Buddha's head. To perfectly express its charm when firing, it needs the cooperation of several aspects.

First of all, the fetal bone density of Kangxi porcelain is the highest, followed by the pink-white glaze that is equally important as the fetal bone.

It is attached to the tight fetal bone, tight and flat, delicate and white, with a jade-like halo on the glaze surface.

The pink and white glaze forms a strong contrast with the bright green blue and white, making the green blue color more charming and moving.

Judging from these characteristics, or from various signs, there are actually several key points in order to accurately fire emerald blue.

One is the temperature, which must be high temperature, but it is not certain how high it is.

Firing emerald blue porcelain definitely requires high temperature, but it is not a fixed high temperature, so it will definitely be fired.

There must be a reason for this, and the only reason is the raw material.

Therefore, the next step is to control the stability of raw materials. Only when the materials are stable, that is, the various elements contained in them are stable, can the firing temperature of emerald blue be controlled.

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