Daming: Teach the prince about dragon slaying skills at the beginning

But whether it is a low-level refining method or a high-level refining method, it can be said that it is expensive.

After all, ancient copper can be directly used as money, even if it is copper, it is still money.

The crystal masterbatch is also a very valuable raw material, at least much more expensive than copper powder.

Coupled with the damage during refining, as well as defective products and other factors.

Therefore, even though the refining technology of colored glaze is quite mature, colored glaze products can still be sold for tens or hundreds of taels.

Because its refining cost is expensive.

And modern glass, in terms of appearance, can achieve the transparency that is clearly visible in the true sense.

And it is also possible to further control the color, so that there is no other variegated color, and there is no problem at all.

Like Yan Changqing at the luxury business fair before, the reason why the colored glaze treasures used as silver can be worth 30 taels of silver.

One of the very, very important factors is transparency! ! !

Holding it in the palm of your hand, you can see the extreme transparency of the palm print through the glass! ! !

This is the highest quality colored glaze that has been refined with the slightest possibility just now in the colored glaze refining of this era, when dozens or millions of pieces of colored glaze are fired.

It is normal for hundreds of thousands, or even one in a million, to be priced tens or hundreds of times higher than ordinary colored glaze.

Coupled with those auspicious animal shapes with extraordinary meanings, the superposition of the two makes Yan Changqing's glass products as valuable as the best colored glaze.

This is also the reason why Zhu Yuanzhang, Zhu Biao, Zhu Yu, Zhu Yan, Zhu Di and other princes thought that Yan Changqing's colored glaze could make money, because they believed that Yan Changqing had mastered a more advanced colored glaze refining technology.

And in fact, it is.

Secondly, the main raw materials for refining modern glass are nothing but quartz (that is, river sand) and soda ash.

Compared with the final value of the cost of this input, it is not an exaggeration to say that it is like turning a stone into gold.

This is also the reason why colored glaze refining technology can be traced back to the Western Zhou Dynasty, but travelers can still make money by relying on this kind of glass products that have existed for more than 3000 years.

Because the cost reduction brought about by quartz and soda ash is really the kind of dimensionality reduction blow for the refining cost of ancient colored glaze.

Watching the temperature rise higher and higher, it even reached a state where the space faintly blurred when the line of sight swept over it.

Yan Changqing reckoned that the firing temperature was about the same, then looked at the glass craftsmen on the left and right and said:

"Put the raw materials in."

The glass craftsmen on the left and right sides are mixing raw materials such as river sand, limestone containing soda ash, dolomite, Glauber’s salt, coal powder, calcite, feldspar, fluorite, and impurity cullet from the first refining furnace, which are about to be crushed. , all poured in.

There are simple methods of refining glass and refining raw materials, and there are also slightly more troublesome methods.

The easiest way is actually to insert a long iron rod into the wide sandy ground during a thunderstorm, and directly attract a wave of lightning to strike it!

After the thunder and lightning, the original sand will naturally turn into the most primitive glass in an instant under high temperature.

This is the one-step method.

If the conditions are not so good, there is a simpler three-step method.

The first step is to crush the sand and soda ash and dry the wet ingredients.

The second step is melting. The glass batch is heated at a high temperature in a pool kiln or a crucible kiln to form liquid glass.

The third step is to blow the liquid glass into shape, and then it can be sold.

The refining of modern glass is so simple.

But this is an unconditional approach, like Yan Changqing who is now relying on Zhu Yuanzhang, the biggest tree.

Not to mention that you can have whatever you want, but at least as long as it is not too expensive, then Yan Changqing can buy it with money.

Therefore, Yan Changqing chose perfection, and directly followed the way of refining glass in modern glass factories to refine glass.

Water and limestone (including soda ash) can lower the melting point of the firing raw materials that Yan Changqing ordered to pour in just now.

Glauber's salt can act as a clarifying agent, while other raw materials help to further refine glass products with other appearance and functions.

These added accessories are not in large quantities, and secondly, their prices are not expensive.

Therefore, for Yan Changqing, the cost value of firing glass has not increased much.

For the traditional ancient colored glaze, in terms of cost, it still belongs to the level of dimensionality reduction.

Taking into account the addition of these auxiliary materials, it will help to produce better quality glass products, which in turn can be sold at a higher price.

So after thinking about it, Yan Changqing still decided to give up the simple and crude three-step method of glass firing, and then use the slightly troublesome modern glass factory firing method for glass firing.

......

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Chapter 145: Flawless glass is released in batches, go find someone who has been taken advantage of 【Please subscribe, please order in full】

Under the high temperature of the kiln, the previously poured raw materials quickly formed a clear glass liquid in the kiln.

After seeing this scene, Yan Changqing nodded, with a faint smile on the corner of his mouth.

At this point, for him, the firing of the glass can be said to be complete.

The rest is just blowing glass of various shapes. In this regard, the skills of the artisans dispatched by Zhu Yuanzhang who have been responsible for firing colored glaze for generations are far superior to those of Yan Changqing.

The moment they saw the clear liquid glass appear, the eyes of the glass craftsmen on the left and right sides widened to the extreme.

They have been responsible for refining colored glaze for generations, and it can be said that no one is more familiar with the refining process of colored glaze than them.

But their ancestors have been refining the glaze for generations, and they have never seen such a clear glaze liquid appear until now! ! !

The reason why colored glaze has been opaque and colorful since ancient times is that the fired colored glaze itself is turbid and opaque.

Naturally fired glazed products are also opaque and have more variegated colors.

And now, they see - what? ! !

They saw almost completely clarified, no, completely clarified glazed liquid-! ! !

At a glance, they could all see the bottom of the kiln through the clear glazed liquid.

what does that mean? ! !

This means that the colored glaze in their kiln will be the best colored glaze! ! !

"Big, big, big...you, how did you do it?!"

Seeing the clear glass liquid in that pool of kiln, he was the oldest among all the glass craftsmen.

At the same time, the old craftsman who was faintly the head of a group of glazed craftsmen looked at Yan Changqing and was so shocked that he couldn't even speak a complete sentence.

Originally, when they, the glazed craftsmen, changed the use of river sand and limestone for firing colored glaze according to Yan Changqing's request, although they didn't say anything on the surface.

But all of them complained secretly in their hearts that Yan Changqing didn't know how to pretend to understand, he couldn't pretend to know, and laymen gave advice to experts.

After all, they have been firing colored glaze for so many years, and they all know the raw materials needed to make colored glaze like a few treasures.

For example, river sand and limestone have never been included in the raw materials for firing colored glaze in the past history of glazed firing.

However, although Yan Changqing didn't say it clearly, he obviously had an extremely noble status.

So they didn't dare to refuse Yan Changqing's order, so they could only follow it.

However, they were also mentally prepared for how Yan Changqing would tactfully tell Yan Changqing the correct method of firing colored glaze after failing to make colored glaze.

As a result, the flawed glass fired from the first batch of river sand and limestone was enough to shock them.

Now the second furnace is after adding a series of auxiliary raw materials such as dolomite, Glauber's salt, coal powder, calcite, feldspar, and fluorite.

The perfect and top-quality colored glaze liquid that was fired out simply broke the three views of their generations of firing colored glaze.

"How did you do it, didn't you see it with your own eyes?!"

Yan Changqing smiled lightly.

"Afterwards, the raw materials and process of glass refining will be carried out in the same way as before."

"First use simple river sand and limestone to refine a batch of defective colored glaze, and then use these defective colored glaze and other raw materials to refine a second batch of flawless colored glaze."

"Then the rest of the glass blowing will be temporarily blown according to the shape requirements I mentioned earlier."

"In addition, all craftsmen who participated in the glass refining today will be rewarded with 500 taels of silver, and those who perform well in the future will also be rewarded every month!"

Yan Changqing's last words fell, that is, the 10 taels of silver invested by Zhu Yuanzhang, Zhu Biao, Zhu Xi, Zhu Yan, Zhu Di and other princes, and another 3 taels of silver, so far only 2 taels are left Only two.

Hearing Yan Changqing's words of reward, all the glass craftsmen knelt down excitedly and thanked the ground, regardless of the ground full of broken stones:

"Thank you, my lord, for the reward!!!"

As the glaze firing workers of the royal family, although they eat imperial food, it is also "dead food".

It is their duty to burn the colored glaze well, if it is not done well, it may cost their lives.

As for the rewards, unless they can use the previous glaze firing method to produce flawless colored glaze, they don't even need to think about rewards.

And even if there were rewards from noble people, it was very rare. After all, Zhu Yuanzhang's incident was well known, and he was not only stingy to himself, but also stingy to others.

But in front of him, he was just dispatched to burn two furnaces of colored glaze, and immediately received a reward of 500 taels.

And I heard from the handsome nobleman in front of me that there will be rewards for those who perform well every month! ! !

At this moment, all the Liuli artisans who have been dispatched don't really want to go back. After all, after going back to work hard for a year, they don't have a daily income of 50 to [-] taels.

Now when this unknown handsome nobleman was happy, he directly rewarded them with an income equivalent to ten or twenty years.

They voted with their feet and knew how to choose. Of course, they worked hard for this handsome nobleman! ! !

Yan Changqing nodded, and then walked out of the colored glaze kiln, the temperature inside was really high, and Yan Changqing was soaked through after standing for a few quarters of an hour.

"My lord, is that the firing method of the best colored glaze?!"

Following Yan Changqing, Lu Wenzhao, who was in charge of protecting Yan Changqing personally, couldn't help but looked at Yan Changqing and asked.

Just now, they were by Yan Changqing's side and witnessed the firing process of the best colored glaze with their own eyes, and even the raw materials needed for firing were clearly revealed in front of their eyes.

Hearing Lu Wenzhao's words, Pei Lun, who was on the other side of Yan Changqing, couldn't help pricking up his ears, and looked at Yan Changqing curiously.

Yan Changqing glanced at Lu Wenzhao and Pei Lun who followed him to the left and right.

Before that, Mao Xiang dispatched a Jinyiwei Commander Tongzhi and five Jinyiwei Qianhu to him to follow his orders.

Among them, Jiang Yu, the commander and acquaintance, is responsible for the daily overall management of all Jinyiwei.

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As for Lu Jianxing, Jin Yichuan, and Shen Lian, the three Jinyiwei Qianhus, he was assigned to be in charge of three shifts day and night to watch over the potato planting.

The rest of Lu Wenzhao and Pei Lun were responsible for following him to protect him, or to monitor him.

"Yes, that's the firing method of the best colored glaze. If you like it, after the finished product comes out, each of you five thousand households can choose three, and Jiang Yu can also choose five."

"Just say what I said."

"You can keep the colored glaze you selected for yourself, or you can sell it as a pawn, it's up to you."

"However, if you want to sell it for money, it's best to pawn it within half a month, otherwise it will be worthless after half a month."

Speaking of this, Yan Changqing glanced at Lu Wenzhao and Pei Lun, who were faintly agitated, and half reminded and half warned:

"If you like Liuli and want silver, you can tell me clearly, I will not be stingy in this respect."

"Without any credit, just looking at hard work, I can give you hundreds or thousands of taels of silver."

 …

"If there is credit, a thousand taels or ten thousand taels of silver is not a problem."

"However, if you reveal the refining method of the best colored glaze, or if you secretly and privately bake it, then don't blame me for not reminding you."

"Behind this glass business, it's not me, but Your Majesty."

"Everyone who has seen the method of burning the best colored glaze is all registered."

"Once similar top-grade colored glaze appears outside, I want to investigate who betrayed and revealed the firing method of the top-grade colored glaze."

"I think you Jin Yiwei should be very clear about the difficulty of this kind of thing."

Lu Wenzhao and Pei Lun's expressions froze immediately, and they both bowed their hands and said solemnly:

"The villain understands that he will definitely not let the method of firing the best colored glaze leak out."