I am a primitive

This clingy guy left Han Cheng to feed the silkworms.

After feeding, he came to Han Cheng's side non-stop.

Han Cheng had no choice but to smile helplessly, but it was very useful in his heart.

The copper ore has been brought back, and the next step is to refine pure copper.

And to smelt copper, you need to get a smelting furnace first.

Han Cheng has never seen this kind of stove, let alone copper smelting, so he can only grope slowly.

He poured the ore he brought back on the ground, told Wu and others about the going out and asked about what had happened in the tribe during this period, and told each other about parting. After having lunch and resting for a while, Han Cheng walked out. The tribe, call Hei Wa, a guy who likes making pottery, and walk outside the tribe together.

Of course, it's not for outings or anything, but to find a suitable place to build a furnace.

Copper smelting furnaces are best located in the downwind of residential areas and downstream of rivers, so as to reduce the impact of waste gas on people and the pollution of water sources by things such as slag.

In addition, the terrain should be higher and farther away from the river. This is to reduce the stove from being damp and avoid being washed away by the river when the water rises.

After choosing and choosing, Han Cheng finally chose the place in the northwest of the tribe near the quarry.

The southeast wind is the most windy here in the tribe. This is the downwind area, and it is far enough away from the river that it will not be affected.

Because the ore transportation of the Qingque tribe is by land, the fact that it is far away from the river has little effect on the Qingque tribe.

This place is a small hillock, the terrain is relatively high, and the chance of getting wet is small. It is indeed an ideal place to build a furnace.

After choosing the place, Han Cheng didn't delay, and immediately got people to start construction.

First, a half-meter-wide tunnel was dug at a relatively high place, and the tunnel was covered with stone slabs.

A circular pottery dish with a diameter of more than [-] centimeters is placed in the middle. The thickness of the pottery dish is more than five centimeters, and it is covered with round holes with a diameter of about two centimeters, like honeycomb coal.

A thick layer of loess and pottery clay was pasted on the stone slab before the stove was started.

In this way, moisture can be avoided to the greatest extent, and at the same time, it can be ventilated and leak ash downward, so that the fire can burn more vigorously.

After getting the most basic things done, it's already getting late, and the rest can only be done tomorrow.

Xiao Biesheng is newly married, and Han Cheng is in the same year. After hearing the news of the child at night, there is a tenderness between him and Bai Xuemei, so there is no need to elaborate.

The next day, he called Shang Hei Wa to continue cooking.

Heiwa has done a lot of things like stoves, and he couldn't help it. Someone transported bricks here and he was in charge of the plate. Before noon, a stove was freshly baked, and a large vat was placed on it, the copper smelting stove of the Qingque tribe. also appeared.

It just looks a little too crude or child's play.

Han Cheng didn't have many ways to think about this. He was really unfamiliar with copper smelting, so he could only learn while fighting.

Get some firewood and put it into the new stove, dry it and test the fire.

The stove was very successful, and the fire was very hot. In the afternoon, the stove was dried out.

Wu, senior brother and others couldn't wait to start practicing copper with the newly installed stove, hoping to see this metal earlier.

Copper is not easy to deal with. It looks like a stove, and if you want to refine it, I'm afraid it will take a lot of time.

Looking up at the westward sun, Han Cheng still suppressed the impulse in his heart, and instead of agreeing to what Wu and the others said, he asked someone to transport the copper ore in the courtyard here.

At the same time, people built a shed with tree trunks to cover the stove.

It can make the stove less exposed to wind and rain, and at the same time, you can store some charcoal under the shed. In case of windy and rainy weather, there is a shed, and you can continue to smelt copper here without any influence.

Before it got dark, the copper ore and charcoal had already been delivered, and the shed was being built according to Han Cheng's request, and it would take three days at most.

With the increase in population and the increase in proficiency, when the people of Qingque tribe do these things again, the speed is not what it used to be.

-------------Chapter Dividing Line---------------

In the crisp sound of "哗哗", the high-quality charcoal was sent into the stove, the air passed through the tunnel, and drilled continuously along the leaking ash, and soon an orange-red fire was ignited.

With a strange mood, Han Cheng personally poured two cans of ore powder that had been smashed into pieces into the big vat. The two cans weighed about thirty catties.

This is the beginning of the Qingque tribe's copper smelting industry.

The thermal conductivity of pottery is far worse than that of metal, but at this time, Han Cheng has no ability to produce steel boilers or other metal boilers that are more heat-resistant and have good thermal conductivity, so the pottery tanks can only be used slowly. Here comes.

"Add carbon to it and bring the wind gulu over."

After waiting like this for a while, Han Cheng saw that the ore powder in the pottery jar didn't seem to be melting much, so he gave such an order after thinking about it.

"Chi~chi~, chi~chi"

The 'Hand Press Drill' is pressed up and down, driving the fan blades to rotate back and forth, and continuously injecting wind into the stove through the pottery tube.

Not long after, a scorching flame burst into the stove, and the fire was much stronger than before. The charcoal fire in the middle was red and whitish.

These efforts were not in vain. This state lasted for about 10 minutes, and Han Cheng found that the ore powder in the pot seemed to be lower.

As time went by, this feeling became more and more obvious, and finally a viscous red metal liquid appeared in front of his eyes, slowly swallowing the dusty ore powder.

Han Cheng, who was sweating from the high temperature, couldn't help showing a look of joy.

He did not expect such a gratifying change to occur in the first copper ore smelting.

Wu also leaned over and stretched his neck to look inside, his face also showed joy. Although he didn't see much, it didn't prevent him from being happy with Shenzi at all.

The senior brothers who built the shed around the stove also came over to watch like witches, and they were also amazed at the amazing transformation of stone into water.

Fantasizing that the tribe would get a lot of metal utensils, they only felt that they were full of energy. After standing here and watching for a while, they worked harder to build the shed.

As time passed, more and more of the ore powder melted, and finally all turned into viscous, dark red molten metal.

Looking at all this, Han Cheng, who was overjoyed in his heart, suddenly became unhappy, because it was only at this time that he suddenly realized that a very important matter had been ignored by him.

That is how to get the boiled metal ore liquid out of the vat.

It stands to reason that it would be best to open an opening under the pottery jar so that the molten metal liquid can flow out along the opening, but it is obviously impossible to open it at this time.

Han Cheng scooped it up with a ceramic spoon with a wooden handle. Seeing the metal beads dripping randomly, he gave up on using the ceramic spoon to scoop them out.

After thinking about it, ask someone to stop the fire, don't add charcoal to the stove, and don't have to turn the wind.

As the temperature in the stove dropped, within a short while, the bright red molten metal in the vat began to turn dark red, and finally cooled down and became solid again.

Wu, who came over to look at it, had a big smile on his face, and the senior brother and the others also bared their teeth and laughed.

Because there is a large piece of metal in the clay pot, the metal looks a little black, similar to iron.