Chapter 218

Wang Kang naturally didn't know about the new plot.

After the "Mountain God" incident, the staff of all parties are more energetic, and Wang Kang is also very generous in eating.

Because of the high intensity of daily work and the inability to keep up with food, Wang Kang hired the women in the city to cook at the construction site.

Xinfeng County itself is barren and short of food. The food brought by Wang Kang obviously can not supply such a large demand. What should we do?

At this time, Wang Kang's good relationship with Jinyu chamber of Commerce played a role, and a large number of meat and vegetables were transported.

Not only that, but also the equipment and timber needed for construction site are purchased from Jinyu chamber of Commerce.

Moreover, in order to facilitate transportation, Jinyu chamber of commerce also invested to level up the Erdaogou road from Xinfeng County to Yangzhou city.

Because Wang Kang is now the biggest customer of Jinyu chamber of Commerce.

In the past few days, with the help of Li Zheng and others, the first underground stove was finally built.

As the name suggests, the underground stove is built underground. Wang Kang came down, which is a huge excavation space, in which two tall underground stoves were built.

Each stove is nearly three meters high and nearly two meters in diameter, which is quite large.

There are platform stairs on both sides of the furnace, which can be directly connected to the top. From the bottom, there is a sealed circular channel directly connected to the next furnace.

This is the result of several days of continuous labor. It looks like two huge cylindrical barrels on the outside, but in fact, there is something else in it.

The inner and outer walls of the furnace are built with refractory bricks and sealed with high alumina clay, so that the furnace can be completely sealed and the heat is difficult to dissipate.

There are two blowers on both sides of the stove. They are called blowers. They are actually the advanced version of the bellows. It's just what Wang Kang calls them.

It's smaller than the bellows. There's no difference on the outside, but the structure inside is very complicated. The biggest difference is that the blower is not a hand-held type, but a foot type.

This kind of design can save a lot of effort and improve the efficiency.

And its wind power and sustainability are much larger than traditional bellows.

This is the biggest improvement. We need to know that the most primitive bellows are used in this era, and the technology of air filling is backward, which requires a lot of manpower to accumulate.

Every furnace of iron takes a long time, and it's very tiring

When Wang Kang came down, several craftsmen were already making preparations.

They lay charcoal in the furnace, and iron ore is placed neatly on the charcoal, which fills the whole furnace.

Because there are layers of construction inside the furnace designed by Wang Kang, and there are gaps between the layers, so ventilation is not a problem at all.

After the preparation work is finished, the ignition will start, which is also very simple, because there is a special ignition port under this new type of stove.

"There's something useful about this design." Li Zheng, who was watching, nodded in praise.

After several contacts, they also participated in the construction of the furnace. Although they did not think that Wang Kang could produce something harder than iron, they did not despise it as before.

Because some parts of the furnace are really worth learning, especially the various structures in the furnace are far more complex than the conventional furnace.

There are some places even they can't understand.

It can be seen that the fire in the furnace has started, and the craftsmen on both sides have started to step on the air blower and pour the air into the furnace.

The opening of the blower is a cylinder made of animal skin, which is directly connected to the air inlet of the furnace, so as to ensure the maximum utilization of wind power.

"Master Kang, is this your new bellows? This kind of pedal type is a good invention. It's not hard for them to use it. " Master Xi asked.

"Well," Wang Kang nodded. The inside of the bellows is complicated. The transmission part is equipped with gears, which are made of wood.

In use, there must be wear and tear, and the service life is very short. After a period of time, it needs to be replaced, but there is no way.

Under the present conditions, there is no way to make iron gears.

Wang Fuchen asked, "Master Kang, are you sure you can turn iron into molten iron?"

This is a big difficulty in ironmaking. The molten temperature of pure iron must reach at least 1500 degrees, which is very difficult to achieve.

For example, in the iron making of metallurgy bureau, the iron ore is basically burned into pig iron, and then continue to be calcined, sometimes liquid will appear.

Because pig iron can be dissolved at a temperature of only 1200 ℃.

But Wang Kang wants to directly refine iron ore into molten iron, which is what they don't believe.

"Just watch."

Wang Kang said with a smile that he didn't explain much. In ancient times, there was no specific temperature data. Everything was based on experience. I'm afraid it's hard for them to understand the explanation.

"Then we'll see!" Li Zheng said a word, and then several people's eyes, all looked to the stove.With the pouring of wind, the charcoal in the furnace began to burn rapidly, and the firepower became more and more prosperous. Of course, this is invisible.

But the temperature can be felt, although there is a firebrick insulation furnace, most of the heat temperature.

However, the high temperature in this space still makes people feel scorched and hot.

"Why is the temperature so high?"

Li Zheng is surprised a way, now the stove outside all feel so, that inside again how?

Wang Kang smiles and doesn't speak, because the only fuel in the furnace is not only charcoal, but also coke, which is an extra harvest found in the excavation of iron ore.

Coke is the main raw material in modern iron smelting and steelmaking, which is more suitable than earth carbon and can reach higher temperature.

Although he felt uncomfortable with the heat, there was excitement in Wang Kang's eyes, because it was a milestone progress in this era presided over by him.

The progress is still going on. There has been a change in the number of craftsmen. They are barefaced and broad-minded. They take turns to replace each other.

"Master Kang, the temperature here is too high. Would you like to go out and wait first?" At this time, a craftsman promoted to foreman came up and asked.

"It's OK. I'll wait here." Wang Kang said that with him, these craftsmen are more energetic, and he also wants to witness the production of steel with his own eyes.

The temperature is getting higher and higher, such as a big steamer, Li Zheng is surprised to see Wang Kang.

Isn't he a rich young master? How can you survive such an environment?

In the past few days, they also inquired about Wang Kang. When they learned about Wang Kang's reputation, they became more and more black sheep. No wonder they agreed to the bet of 100000 gold coins without blinking an eye

Because of this, they are confused. Wang Kang's performance is not like the black sheep of his family.

At the moment, even a few of them took off their coats. Wang Kang's forehead was full of sweat, but he didn't move at all. His perseverance was amazing.

Waiting is boring, so after another hour, the pipe diameter extending from the furnace finally has hot molten iron flowing out

This?

Seeing this, Li Zheng and others can no longer keep calm