After landing on the island, Mr. Yu was curious about everything. When he saw the cement brick wall, he tried hard to dig it out, but he didn't get a piece of it. What surprised him even more was that the bricklayers actually laid ceramic tiles on the exterior wall.

The tiled house sparkled beautifully in the sun, and those who came with the fisherman all wondered whether it was actually for people to live in.

The only people who followed Li Xiao to the island were Yu Lao and his group of more than 140 people. Most of them were women and children! The rest of the craftsmen had to be entrusted to Chen Fu to select and send them in batches.

After the fisherman and his friends arrived on the island, the first thing they had to do was take a bath. Living in a poor sanitary environment for a long time gave them lice.

After taking a vigorous bath with soap, they moved into the isolation area at the foot of the mountain. They needed to be isolated here for a few days until the lice on their bodies were washed away before they could go up the mountain. This was Li Xiao's attempt to prevent parasites

spread and set rules.

The tattered clothes were thrown into the fire and burned. You could still hear a "cracking" sound while burning, as if firecrackers were being set off during the New Year.

Everyone is wearing clothes made by girls in the clothing factory! There is no shortage of clothes, trousers, and shoes.

Those that don’t fit can be changed on site. For example, a big hammer needs to be measured and remade. Children also need to be remade. There were no clothes for children on the island before! Xiaoyu and Li Hao’s clothes

, all sewn by Sister Qiao herself.

After settling in the old fisherman and the others, Li Xiao plunged into the newly completed factory. Various equipment had been cast in accordance with Li Xiao's requirements. In order to rush the work as soon as possible, Zhao Tiezhu had not slept well for several days.

The ore that Li Xiao asked Master Wu to buy is called pyrite ore, which can produce sulfuric acid.

The first step in making sulfuric acid from pyrite is to crush the ore into small particles. The huge steel rollers made from the refined steel in the blast furnace, driven by several bullocks, crush the large pieces of ore into small particles.

particles like sand.

The huge sieve filters out the large pieces and re-pulverizes them, and the qualified ones are thrown into the boiling furnace. The wind on the top of the mountain is very strong, and the bottom of the boiling furnace faces the sea, and the sea breeze blows in with oxygen. It is even better than a blower!

Pyrite is roasted in a boiling state in the furnace, and the boiling steam enters the cooling tower. Li Xiao checked the roasted residue, which was very good! The residue was black, which is iron oxide! This proves that the furnace temperature is very high, and inside

Less oxygen enters. In this way, the ore utilization rate will be very high, and more sulfuric acid can be extracted.

After entering the drying tower, Zhao Tiezhu quickly opened the vent below the drying tower. Let the sea breeze carry a large amount of oxygen and pour it into the drying tower. The sulfur dioxide gas entered the cooling tower after encountering a large amount of oxygen.

Li Xiao did not have defogging equipment, so he had to wait for natural cooling. After cooling, Li Xiao got the dilute sulfuric acid. After drying the dilute sulfuric acid, look at the thick liquid flowing out of the glass tube. Li Xiao knew,

I got 93% concentrated sulfuric acid.

I found a small wooden stick and stuck it into the concentrated sulfuric acid in front of everyone. But in the blink of an eye, the small wooden stick turned into coke.

"If you don't want to live, let this thing stain your skin." Li Xiao smiled sadly, and Zhao Tiezhu quietly took a few steps back, trying to distance his body from such a terrifying thing.

It is good to let them know the horror of this kind of thing, and it may be able to save their lives in the future.

With sulfuric acid, it is very simple to make nitric acid. Just heat saltpeter and concentrated sulfuric acid together slightly to get nitric acid gas. Let the nitric acid gas pass through cold water, and the nitric acid will dissolve into the water, gradually forming a high-concentration nitric acid solution.

.

Fortunately, glass factories are now able to produce glassware, otherwise even if sulfuric acid and nitric acid are produced, there will be nothing to hold them.

The synthesis of concentrated sulfuric acid and nitric acid is completed in a glass vessel with tubes on both sides. Li Xiao is actually very afraid of these two things. If he is not careful, these things will splash out. As long as they fall on the skin,

It will definitely be burned.

Li Xiao didn't even dare to think about that kind of pain.

The temperature of the two mixed solutions was quite high. Fortunately, Li Xiao had already prepared it. He started pouring cold water into the cooling tank under the glass.

The cold water poured in here was already hot when it came out from the other side. Li Xiao solemnly warned Zhao Tiezhu that the fusion must be carried out while cooling, otherwise the glassware is likely to be burned. If it is broken, the contents inside

If the acid spills out, it's an absolute nightmare.

The skimmed cotton has been prepared a month ago. It is obtained by boiling the cotton with caustic soda solution and then rinsing it with water. The fat in the cotton reacts with caustic soda to form soap. After washing, the fat is completely washed away.

After drying the absorbent cotton, it was carefully stored. The island here is very humid. If water vapor enters again, it will be in vain.

Li Xiao pressed the absorbent cotton into a glass filled with mixed acid solution, pressed several thick layers, and used a glass rod to press out the air between the cotton.

After letting it stand in the acid solution for complete absorption, Li Xiao took out the nitrated absorbent cotton and rinsed it with fresh water until the sour smell was gone. Then he put the nitrocellulose into a dilute alkali solution and boiled it for an hourglass time, took it out, rinsed and dried.

Then immerse in the diluted saltpeter aqueous solution for stabilization.

Although nitrocellulose has been stabilized, it is still unstable, flammable and explosive. When the temperature exceeds 40 degrees Celsius, it can decompose and spontaneously ignite. Therefore, a certain proportion of spirits must be added to nitrocellulose as a wetting agent during storage and transportation.

, to increase stability.

After working for a whole day, Li Xiao finally finished a jar of nitrocellulose.

He took a piece of nitrocellulose, and as soon as the firelight came into contact with the cotton, the whole cotton burst into flames, burning violently like fireworks in the dark night. Of course, only Li Xiao among the people here had seen fireworks.

After burning, the entire piece of nitrocellulose turned into fly ash. If there were no burning marks on the cement floor, everyone would think that there had never been a fire.

Li Xiao is very satisfied with this burning rate. The principle of gunpowder is actually the same, that is, it burns violently in a limited space. This is how the explosion actually occurs!

The more intense the burning, the higher the intensity of the explosion.

With this kind of thing, the black gunpowder in the past becomes worthless. When attacking Zhenjiang Fort for the second time, the grenade that shined brilliantly. With the blessing of this thing, it will become even more destructive.

Li Xiao is very much looking forward to how powerful it will be.
Chapter completed!