Chapter 97

Although it has been decided to use the earth kiln coking method to make more coke, Shixiong doesn't intend to let the first coking pit be abandoned.

Anyway, the earth kiln coking method is also to dig a big pit on the ground, so after thinking about it for a while, Shi Xiong decided to reuse the big pit he had made before. Of course, this big pit is a little small, so it needs to be expanded.

With tools like shovel, hoe and pickaxe, it is much easier to dig holes. In just one day, the diameter of the big pit used for the first coking is doubled, and the depth is also increased by half a meter according to the stone bear.

Then these excited people started to build the flue with lump coal according to Shi Xiong's requirements. After the first layer of flue was built, pulverized coal was filled around it. When it was installed to a certain height, it was stepped flat and solid, and then the second layer of flue was built

Many people have great power.

Although the minority people have not built a flue before, but under the guidance of the stone bear, this work is progressing very fast. So the next day, it took only half a morning, and the kiln coal and the wood for ignition were all sharp.

The next step is ignition. When all the pulverized coal is ignited, coking begins.

Although there was no built-in flue during the first coking, the coking process was almost the same, so with the first coking experience, the second coking was much faster.

When a blue smoke flame came out of the fire hole, the fire hole was pasted to death by the prepared people. Then another group of people began to cover the sand and then drench the water to cool down.

Lieutenant Ferguson watched these people coking under the command of the boss with relish. Although he didn't know why he wanted to do this kind of thing, he was almost dead hearted to the stone bear now, so he kept watching quietly until he began to spray water to cool down. Then he quietly approached the stone bear and asked in a low voice, "boss, can this kind of thing really make steel?"

Stone bear has given him too much advice these days, which makes it clear to lieutenant Ferguson, who usually thinks highly of himself, that this big man who looks savage and ferocious is actually a man of great connotation. What he knows is just amazing. In his heart, Lieutenant Ferguson has long regarded stone bear as an idol.

At first, due to his face, he was always unable to say the word "boss", but since the rotary valve locking device had an eye, he called "boss" from the heart, and lieutenant Ferguson had no conflict with the name any more.

And he thinks that calling this big man the eldest is really not aggrieved at all.

Such a boss is definitely worth following.

Although the boss doesn't talk and laugh at ordinary times, he is really unambiguous in his work.

Lieutenant Ferguson is very clear that the boss started all the fallen people to start steelmaking, not for other reasons, but for himself to have enough steel to use when experimenting with new guns.

This kind of mouth does not say, only practical action to support their boss, where to find ah!

The stone bear took a look at Lieutenant Ferguson and said in a low voice, "coke is mainly used for smelting iron, because the melting temperature of iron ore is higher than that of steel, and the heat and temperature generated by ordinary coal combustion are not enough to melt iron ore, So coal must be used to produce this kind of fuel which can produce more heat and higher temperature when burning, so that iron ore can be completely melted and molten iron can be smelted

After a pause, Shi Xiong continued to explain: "only with molten iron, can we further process the molten iron when it melts, so as to produce real steel. Well, if you can produce qualified steel this time, you have the right to use one third of it! "

Second lieutenant Ferguson was moved again by the last sentence. This is what the boss looks like!

This coking is very successful, with the first coking experience, the success rate of coking is as high as 90%, the vast majority of coal has been successfully refined into qualified coke.

And with the success of this time, the success rate will continue to rise when coking next time!

This time, at least 20000 Jin of coal was put into the expanded earth kiln, and the qualified coke discharged from the kiln was more than 13000 Jin, which is close to the qualified rate of coking in later generations.

So much Coke, enough to make that local blast furnace open four times!

Of course, the stone bear in the stone house next to the kiln didn't let it idle this time. Anyway, no matter how coking, will produce a lot of waste heat, these waste heat is not used up is a crime.

So before coking, the stone bear made the people prepare a lot of refractory bricks and some ordinary red bricks.

As a result, after the coking, there were many more qualified firebricks and ordinary red bricks in the tribe.

There are only a few hundred red bricks. However, this successful firing of red brick is a progress.

Even a red brick is a kind of precious wealth for the primitive tribe, which has almost nothing.

And if you want the tribe to grow, a little accumulation is an essential process.

These hundreds of red bricks are not many, but they can make people understand the benefits of red bricks. Whether it's building a house or other uses, red bricks are much more convenient than those rocks!

The existence of these red bricks is to make people realize that the fired red bricks have a wide range of uses.

In the future, we will mobilize the clansmen to build brick kilns and burn bricks, and the clansmen will spontaneously stand up and contribute.

At the same time of coking, several strong men selected from the tribe were not idle. They were all people who were interested in ironware or smelting, and they were called up by wooden planers.

Wood planer has shown his talent in smelting, and he himself is willing to switch to smelting. Although this made old wood a little unhappy, old wood finally nodded and agreed to the second son's request to change his career.

Therefore, the wood planer became the manager in charge of smelting in the tribe. With his efforts, some members of the tribe who are interested in smelting also joined his team.

Now, these seven or eight strong people are learning to strike iron under the arrangement of wooden planers.

Yes, after the guidance of the stone bear, the wood planer decided to train these people into special blacksmiths of the tribe!

Since it is necessary to cultivate blacksmiths, blacksmithing is one of the basic skills that blacksmiths must master.

Well, if we can get Mr. Kobe Bryant here from that time and space, this black mamba will definitely become the leader of the tribal blacksmith!

Now these future blacksmiths, under the command of wood planers, are melting some waste pig iron from the previous furnace with crucibles, stirring hard, and finally taking it out with tongs, putting it on the iron felt and hammering it continuously, finally forging these red iron ores into thin iron plates.

In this process, these thin iron plates will eventually become low carbon steel or even wrought iron with low carbon content. These iron plates are prepared for the second steelmaking!