Chapter 79 Ironmaking 3

When all the powder is used up here, there are still a lot of sulfur powder and charcoal powder left. Next time I go to transport the ore, I will bring more saltpeter back.

Zhang Yang watched everything go well and asked Tang He to send a person to guard the warehouse.

After finishing this side, Zhang Yang took the three people back to the ironmaking base in the north to see how Li Bosheng's coke was burning.

In front of the kiln, there was a man standing, pointing angrily at something.

This man's clothes are ragged, but he is still in the wind. The arms and thighs exposed in the hole were thick and powerful, but they turned black, as if they had just been exposed to a sunbath from India for a few months. Moreover, it seems that the fur on it has also become small balls one by one.

Who is this person? Zhang Yang can't see it from the back.

Zhang Yang went up and patted the man on the shoulder: "Brother, where is Li Bosheng?"

A big black face turned around. Although he became Bao Gong, there was no crescent on his forehead. The high bridge of the nose, the thick lips, and the simple cheeks, isn't it Li Bosheng?

" Bo Sheng? You? What's wrong with you?" Zhang Yang couldn't believe that the person in front of him was Li Bosheng, as if he had walked down from the battlefield.

"Just now I wanted to check whether the coke was burned. As soon as a piece of the brick sealing the kiln was removed, a flame suddenly appeared inside and a large pile of black smoke spewed out. Fortunately, I hid quickly. Otherwise, I'm afraid I would be burned into a fireball." Li Bosheng said with lingering heart.

Wow, it's so awesome that he even hung a lottery so well. Looking at Li Bosheng's expression and his dress, Zhang Yang suddenly wanted to laugh.

" Bo Sheng, you are such a pioneer, good job!" Zhang Yang held back his smile and patted him on the shoulder.

When the kiln was blocked, there was no oxygen in it. The fire had already been extinguished, and it was being distilled inside. After opening the kiln, the oxygen outside went in, and the temperature inside was still quite high, so a fire suddenly broke out, Zhang Yang thought.

If you analyze it in this way, the coke inside is likely to have met your own needs, which is the best. Even if the coke is not burned well, the semi-finished products in the kiln will burn more fiercely than charcoal.

"Let everyone lift the water from the lake, open the exhaust port above, pour the water into it, lower the temperature inside, and then open the kiln." Zhang Yang said.

"Yes! Why didn't I think of it!" Li Bosheng patted his thigh. When the temperature drops, I'm afraid it won't work in three or five days. Let's force it to cool down.

If there is a high-pressure water gun of the fire brigade, it will only take a few minutes. Now, it will be changed to artificial water.

When everyone heard this order, they all went back to find the wooden bucket and picked up water from the lake. They didn't find the wooden bucket. They also brought the wooden basin for washing at home.

People are more powerful, eat more when eating, and work quickly.

After learning from experience, when opening the exhaust port, everyone did not open the exhaust port directly, but first cooled the side with water. Moreover, the moment the exhaust port was opened, the water was immediately splashed.

It went well. No one became so embarrassed by Li Bosheng.

"Open the kiln!" Li Bosheng regained his usual nature and began to command arrogantly again.

Everyone is eager to see what it is like inside, what the black coal will look like after it is burned.

After opening the bricks of the cave, several people rushed in.

"Wow, it's really different. Why did it burn into a small hole when it was burned inside?" A man wore a wet cotton glove and took out a piece.

Although I just poured water with water for a long time, the temperature inside is still very high, so people who enter it wet their whole body with water in advance, and then wear cotton gloves to prevent being burned.

Under the sun, this piece is like a termite's nest, full of black objects covered with holes, shining in the sun.

"That's right, that's it!" Although Zhang Yang's voice was plain, it did not hide a trace of trill at all.

"Put the raw materials in the blast furnace and get ready to start ironmaking!" Li Bosheng ordered.

With Li Bosheng's words, everyone was busy according to the prior arrangement.

A basket of ore, limestone, and coke were poured into the furnace from the inlet.

The most appropriate thing is to make a conveyor belt, directly pour these raw materials on it, and send them into the furnace with the conveyor belt, but now there is no power source. What is used to drive the conveyor belt? Manually shake by hand? It's better to let everyone lift it up.

So between the ground and the mouth of the furnace, Li Bosheng set up a ladder with wood in advance. Everyone followed the ladder and poured three different raw materials into the furnace in order.

"Brother, I know the use of this coke, but what is this limestone for?" Li Bosheng asked, although he did not doubt what his eldest brother said, he still wanted to figure it out.

"The principle of our blast furnace ironmaking is that the carbon in coke is generated by the combustion of carbon in the coke and the oxygen in the air at high temperature. In the process of rising in the furnace, the oxygen, sulfur and phosphorus in the iron ore are removed and the iron is reduced to obtain. The refined iron water is released from the iron mouth. Limestone is called a solvent-assisor. The unreduced impurities in iron ore combine with limestone to form slag, which is discharged from the slag mouth. Zhang Yang explained.

"So that's it!" Although many words that he didn't understand popped up in Zhang Yang's words, Li Bosheng also understood that the process of making iron was to burn iron ore with coke, boil out the iron water, and the rest of the things were stained with limestone and became slag.

"Ignition!" Zhang Yang looked almost there and gave the order.

At the bottom of the blast furnace, a small amount of firewood has been placed in advance, and there is easy-to-burn coke on it. Li Chengrui held a torch and lit the stove from the bottom.

The smoke came out, and the flames were moving and became more and more vigorous. Finally, the coke on it was also lit. Once the coke is lit, it will be a raging fire.

"Punwind the bellows!" Zhang Yang gave the second order.

After the fire is booming, it can only bulge into the air. Otherwise, as soon as the strong wind blows, the newly burned flame will be extinguished immediately.

With Zhang Yang's order, the three people, holding the handle of the bellows, began to blow the wind.

Three people? Yes, it's just three people, because the bellows are so huge. If one person does his best, the bellows will not move.

It's these three people who have to go all out. The blue veins on their arms are exposed and their muscles are bulging.

"One two, one two." Shouting the trumpet, they sometimes leaned back, pulled the handle to the end, and sometimes leaned forward and pushed the hand forward.

With the back and forth of the bellows**, the flames are galling, getting more and more vigorous.

Soon, the three people sweated profusely, not only because they were tired, but also because the temperature of the blast furnace was getting higher and higher, and the nearby bellows were also baked very hot.

"Change three people to go up." Zhang Yang said.

Zhang Yang carefully observed the flames in the furnace and ignored the heat waves at all. What he was most concerned about was whether the temperature in the furnace was high enough. The iron ore began to soften at about 1,400 degrees, and melted to form iron water and ** slag at about 1,400 degrees, which were stored in layers in the furnace cylinder. Can this small blast furnace reach such a high furnace temperature? The furnace temperature is not enough. Either the iron water cannot be refined, or the iron produced contains too many impurities to be used.

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