Ning Xiu locked himself in the house after he got home.

The two elders, Qilang, and Juro didn't know what Ning Xiu was doing.

Of course Ning Xiu is not reviewing the book.

There is still some time before the provincial examination, and it is not necessary for him to fight every second at this time.

He was preparing for glass.

As a doctoral student in chemical engineering, the making process of glass is naturally clear.

However, due to the limitations, he could not make glass in one go.

But now he has the foundation for making cement, and it becomes very easy to make glass on this basis.

As we all know, the main components of glass are sodium silicate, calcium silicate, and silica, which are melts of these three. To prepare glass, soda ash, limestone and quartz sand are required.

Needless to mention soda ash and limestone, there are those for sale on the market. As for quartz sand, it takes some effort to get it.

Ning Xiu knew that there were already Buddha statues cast with quartz sand in the Ming Dynasty, so quartz sand must have been mined in the Ming Dynasty. But he found that there were no merchants selling quartz sand on the market.

After several inquiries, he learned that the mining of quartz sand is generally carried out by the government, and it is difficult for the people to access it.

This is not difficult. With his relationship with Master Li, it is not impossible to obtain authorization to mine quartz sand.

As long as you have these three things, you can officially start making glass.

The production process of glass is basically divided into several steps. First, the raw materials must be preprocessed. Quartz sand, soda ash and limestone are mixed together for crushing, and dehumidification is carried out to ensure the drying of the raw materials.

This step is very simple to complete in Ningji Workshop.

Next is to dissolve the glass raw materials. The mixed raw materials are sent into the kiln for high temperature heating. At a high temperature of more than 1,600, liquid glass can be obtained through complex chemical reactions.

Ning Xiu once set up a kiln in his own workshop when preparing cement. However, the maximum temperature of the kiln was between 1200 degrees and 1400 degrees, which could not meet the 1600 degrees requirement of glass firing.

Ning Xiu had to call the master who built a kiln for him last time and help him build a new kiln.

Now it seems that it is impossible to use multiple uses in one kiln and make cement and glass at the same time.

Although there is only a temperature difference of 200 degrees, it is related to whether glass can be successfully prepared. Ning Xiu does not want to take risks in this matter.

When re-establishing the kiln, the orientation of the kiln and the angle of the kiln will be different. This work will not be able to be carried out without completing other things.

After completing the dissolution of the glass, it will be molded. This step is very critical. The quality of the glass depends on the molding steps.

Usually, liquid glass is poured into the prepared mold according to the needs, so that it becomes the required shape, such as various wine glasses and bottles, as well as glass windows, etc.

Finally, the molded glass must be heat treated, and the structural state of the glass must be changed through annealing and quenching.

The production process is clear and clear. The only difficulty now is the dissolution and heat treatment links.

The Chinese people accidentally made glass as early as the Shang and Zhou dynasties. It is said that the pottery made unexpectedly when burning pottery.

However, the glass burned by Chinese people is very fragile and is not resistant to heat and cold, which is indeed much worse than the glass burned in modern times.

Liuli has these disadvantages because Chinese people cannot master the two links of dissolution and heat treatment.

If Ning Xiu could not make a breakthrough in these two points, the glass he made was not very competitive than local glass. It might even be worse than glass. After all, purely from the perspective of aesthetics, glass is much stronger than glass and is at the level of art.

The advantage of glass is that it can be mass-produced on a large scale, and its cold resistance is better than that of native glass.

Ning Xiu found that there was still a long way to go to make glass completely popular in the Ming Dynasty.

The road has to be walked step by step, and the meal has to be eaten one bite at a time.

Ning Xiu must first prepare...

He rubbed his forehead, got up and walked towards the carved door. It didn't matter if he pushed the door, and immediately heard a 'Ouch' sound.

Ning Xiu looked at him carefully and saw Qilang lying on the ground covering his butt, grinning at him awkwardly.

"Qiro, you've been staying outside the house?"

"Stern brother, don't mind. I just listened to my second uncle's instructions before eavesdropping outside your house. Uncle II was worried about what stupid things you did in the house alone, so he asked me to eavesdrop outside the house. If there was any abnormal movement, he would break into the door."

Ning Xiu gave him annoyed look and said, "It's a good thing that my father can think of, what stupid things can I do?"

After saying that, he walked up to pull Qilang and said, "I am preparing to make a new type of glass. Hum, I call it glass."

Qilang's big eyes flashed and blinked, "Glass? This name is novel. Is this thing better looking than Glass?"

Ning Xiu shook his head and said, "In terms of aesthetics, glass is definitely not as good as glass. But glass can make more people afford it and enter the lives of more ordinary people."

Qiro was fascinated by the sound of hearing this and swallowed, "How to do this glass is so good?"

Ning Xiu patted his shoulder and said, "It seems that making glass is similar to making cement. Do you remember the last time that the master who built a kiln for our family? Go and invite him, I want to ask him to build another kiln according to my requirements."

"Brother Third, can't the original kiln be used? How much money will it cost to build another kiln again?"

Ning Xiu smiled and said, "Don't worry, my third brother guarantees you that this money will definitely be spent without any wrongdoing." After a brief pause, he continued, "If glass can be mass-produced, the profit will definitely be greater than that of cement and soap."

Qiro was shocked when he heard this and clenched his fists excitedly.

"This glass is so powerful? Okay, I'll go and invite that master to build a kiln!"

After saying that, Qilang turned around and left.

“Let’s wait.”

Ning Xiu hurriedly called him and said, "When you go, you can tell the butler, and ask him to buy some limestone and come back with alkaline noodles."

"Okay." Qilang replied repeatedly: "Where are you, third brother?"

"I want to go to the government office again. Whether I can successfully make glass depends on this trip to the government office."

Ning Xiu said harmoniously.

The mining of quartz sand requires permission from the government. Ning Xiu urgently needs this raw material, so it is inevitable that he will go to the government office again.

Ning Xiu could see that Master Li liked the wine he made very much, and he could take this opportunity to bring a few more bottles of wine.

It was impolite to come but not come. Ning Xiu gave him so much wine to the prefect, and then asked him to allow him to mine the quartz sand mine, which would not seem abrupt.

Of course, Ning Xiu was not in vain to mine, he would pay the government money at the market price.

Isn’t it beautiful for both sides to get what they want?

......
Chapter completed!