I really don't want to be a rebel [infrastructure]

Burning glass is probably the only way for every traveler.

However, this thing is only useful when the economic base reaches a certain level, otherwise it is just a luxury for nobles to play.

Luo Shixing's living standard has not yet reached the level of enjoying luxury.

Of course, it's not impossible to ignore the life and death of the people below, but can Luo Shixing do it?can't do it.

So at first he would rather use shells to make windows than burn glass.

He also once felt that it was necessary to wait for the alliance to become more prosperous, at least when the economic level of their surrounding areas reached a certain level, and everyone could afford glass products before they would make this thing out.

As a result, I didn't expect that now is the time when I need it, and it is necessary.

Luo Shixing had no choice but to look for someone who could make colored glaze.

At this time, it shows that their alliance is not down-to-earth in some respects. They have the lowest illiteracy rate and the highest average education level, but there are very few craftsmen who are really involved in the foundation of various industries.

Farming is okay. Anyone who doesn't have a few acres of land these days knows something.

But the status of craftsmen is low, and no one will study these things unless scholars have leisure time to do it for fun.

In the end, he can only choose some people who have a little understanding of Gewu.

Of course, he needs to prepare the raw materials before that, the first is the raw material for making glass-silica sand.

Strictly speaking, silica sand is actually quartz sand, and there are generally two ways to obtain it. The first is silica sand ore, which can be found in places where crystals are produced.

After all, crystal itself is a quartz crystal, and this kind of thing usually grows underground or in caves, which requires abundant groundwater resources.

There must be abundant groundwater resources in Jiaozhou, but it is not so easy to find crystal mines. Instead of looking for illusory crystal mines, he might as well choose the second way-quartz stone.

Quartz stone is crushed and processed to form quartz particles, that is, quartz sand. It is much easier to use quartz sand to fire glass. The most important thing is that quartz stone is widely distributed and can be said to be a very common ore.

Even Alzhen has a lot of quartz mines in his hands.

When he learned that Luo Shixing needed quartz stone to make new things, Al really said generously, "If you like it, I'll give it to you."

Quartz stone can't be said to be worthless but it's not so valuable, so it's really no psychological burden to give away a mine.

Luo Shixing quickly waved his hand: "No, I'll just buy it from you. Now you give it to me. I'm afraid you will feel bad when I get it out."

Ale thought about it sincerely, but said: "What's so distressing about this? It's not too precious."

Back then, he could give the salt mine whatever he said, so what was the quartz mine?

Luo Shixing still didn't want it, and of course he could buy it from Alezhen, but the problem is that it would be a bit deceiving.

The price of quartz ore before making glass is different from the price of quartz ore after it is made. Buying it now must be at a low price. It’s fine to buy it from outsiders.

In the end, Alezhen had no choice but to give Luo Shixing a batch of quartz mines, which was not much. After all, Luo Shixing was still in the experimental stage and didn't need that much.

It's just that quartz stone is not ready to use. All minerals basically have some associated minerals. For example, there will be thin film iron on the surface of quartz stone, bonded muddy impurity minerals, and some without itinerary. body mineral complexes, these need to be removed for the job.

If it is not removed, what is fired is today's colored glaze.

One of the reasons for the color of colored glaze is that there are mineral impurities in the fired raw ore. These mineral impurities will make the quartz sand change color and turbid during the firing process, resulting in low transparency.

Generally speaking, four-step treatment is required to remove impurities in quartz ore. The first step is scrubbing and desliming. Simply speaking, the viscous minerals on it are removed by wiping. This is the simplest removal method.

There is no need for Luo Shixing to find someone to do this kind of thing, the quartz mine sent by Alezhen has already undergone this kind of treatment.

The second step is magnetic separation, in order to remove the above magnetic minerals such as hematite and limonite, which need strong magnetic treatment, and magnetite needs weak magnetic treatment.

The third step is flotation, but this cannot be achieved for the time being, because surfactants are needed, and this thing requires the development of chemical industry to a certain extent.

Luo Shixing thought about it. When the chemical industry was not so developed, foreign glass had already reached a certain degree of purity. It can be seen that this step is not necessarily necessary.

As for the fourth step, it is back to the familiar origin. It is necessary to use sulfuric acid or hydrochloric acid to remove impurities by using the characteristics that quartz stone is insoluble in acid solution and other minerals are soluble in acid solution.

When Luo Shixing got to this point, looking at the word sulfuric acid written on the paper, he really wanted to ask: Why is it you again?Why are you everywhere?

Fortunately, things like green vitriol are not really unavailable. After all, alchemy is a fashion these days, especially the governor of Jiaozhou, who lives in the city of Zhouzhou, is addicted to taking pills. Everyone in the city wanted to refine a better elixir for the governor.

Since alchemy requires green vitriol, this is the basic material.

It's just that they can't buy in large quantities, and Luo Shixing needs too much green alum, so he still has to find a way to transport it through a caravan.

Luo Shixing heard that after someone bought green vitriol in Jiaozhou city, he sent someone to receive it and said strangely: "Jiaozhou governor? Shouldn't it be the governor of Jiaozhou?"

Doesn’t the governor of Guangzhou rule the whole of Lingnan here in Lingnan, and there are no governors in other state capitals?

Liu Qixian said: "Our news here is occluded, and it was changed last year. The governor of Guangzhou concurrently served as the economic envoy of the five prefectures, and other prefectures set up governors. The original governor of the prefecture was promoted to governor. In fact, the person has not changed, just changed the name."

Luo Shixing knew it well, but he didn't care about this kind of thing. In fact, the names of officials in the Wu Zhou Dynasty changed a lot.

Probably for the purpose of being different from the previous dynasty, even the six parts were moved, and other places were moved more frequently.

This kind of thing has no effect on Luo Shixing and the others.

Anyway, they can't be officials, and they don't have much time to deal with these officials.

Now he focuses on the extraction of sulfuric acid.

Green vitriol is generally used to extract sulfuric acid by heating. Green vitriol will produce sulfur dioxide, sulfur trioxide and water vapor when it encounters strong heat. Among them, sulfuric acid will become sulfuric acid after condensation of water vapor and sulfur trioxide.

So in this era, sulfuric acid is also called green vitriol oil.

Yes, this thing is not a new thing now, so when Luo Shixing tossed out the sulfuric acid, no one reacted.

After acid leaching the quartz stone, a higher purity quartz stone is obtained, then the next step is to crush and fire the quartz stone.

Of course, firing glass is not just throwing raw materials in. The first thing is to make ingredients. It is not only quartz sand that is used to make transparent glass, but also the most important mineral - galena.

What is fired in this way is the legendary lead glass.

The various materials of lead glass actually need some other things. For example, soda ash is sodium carbonate. If you want to prepare soda ash by yourself, you need to use sodium hydroxide and carbon dioxide.

Sodium hydroxide is obtained by electrolysis of brine, while carbon dioxide can react with dilute hydrochloric acid through calcium carbonate.

Dilute hydrochloric acid is prepared by adding sulfuric acid and salt, and calcium carbonate is even simpler-the composition of shells is calcium carbonate.

Of course, there is actually an easier way to roast the seaweed, which also contains soda ash.

However, considering that the beach was far away from them, Luo Shixing chose the chemical method.

Anyway, it's just an experiment now, and it doesn't need to be produced on a large scale, so it's not that difficult.

After the materials are ready, they can be fired according to the recipe.

Firing is not just throwing all the materials in. First of all, it needs to be preheated at about [-] degrees. This is to remove the chemically bound water, adsorbed water and free water contained in the material, and the thermal conductivity of the embryo body itself Not very good, if directly heated at high temperature will cause surface carbon oxidation.

After the preheating is almost done, the next step is sintering, which is generally around [-] degrees.

At this time, I have to feel that with coal and electric blowers, it is much easier to get the kiln to a thousand degrees.

After about half an hour of sintering, there is cooling. It is necessary to quickly cool the temperature of the blank to about [-] degrees. This time is best controlled within a quarter of an hour.

It's just that Luo Shixing doesn't have a thermometer now, so he can't accurately predict the approximate temperature.

At this time, the benefits of having a mature blacksmith are reflected. Blacksmiths are more precise in controlling the temperature of the flame.

After cooling, the blank presents a transparent and foggy appearance.

Luo Shixing took a closer look and said, "The formula still needs to be changed, it's not clear enough."

However, apart from him, everyone who heard the news was surprised.

Li Youdao even said with a look of shock: "Didn't you refine the crystal?"

In this day and age, the most transparent thing is probably white crystal, and the transparency of glass is not as good as crystal.

However, crystal is a natural mineral, how can it be made?

Li Youdao rejected this idea at first, and then remembered one thing - the lynx mantle itself can't be used according to common sense, people can still turn clams into pearls!

Luo Shixing smiled: "It's not crystal, it's a kind of colored glaze. It's just improved craftsmanship, so I call it glass."

As soon as he finished speaking, he heard a click.

Xiao Shanshi next to her exclaimed: "Oh, why is it cracked?"

Luo Shixing was startled, and turned his head to look, and found that the square glass suddenly shattered without anyone touching it.