I am a Primitive Man

Of course, the freshly made mud embryos cannot be directly burned. After they are finished, they are placed there and wait to dry in the sun.

During this process, Han Cheng and Hei Wa rebuilt the stove with yellow mud and clay.

About the same size as before.

After it is built, let it dry for a day, and then light it on the fire to bake it, so that it dries quickly.

The special clay pot used for smelting copper was also placed beside the fire to speed up the process, otherwise it would take too long to dry naturally.

Eight days later, two newly manufactured items were finally ready.

Put the pottery jar on the stove, and after the two are connected, the copper smelting business of the Qingque tribe begins again.

Han Cheng stepped on the steps built with stones, stopped when his waist was level with the mouth of the stove, tilted the jar he was holding in his arms, and slowly poured the ore powder inside into the jar.

This time I put too much, and I put six cans in it in a row before I stopped.

Don't worry about the ore powder flowing out of the opening left below, because it has been blocked from the inside with a ceramic plate long before doing this.

After the ore powder was poured in, the flames started to burn, and the wind whirled. The scorching heat gathered here, passed through the bottom of the pottery jar, and transferred the heat inside, affecting the ore powder.

This process was a bit long, and after a long time, the ore powder inside finally slowly began to melt.

As for all melting, that is a long time later.

Han Cheng boarded the steps again, tilted his head back, and squinted at the high-temperature liquid inside.

With a very high temperature of air, it is steaming upwards, which is a bit unbearable.

Get out of the way!

After looking at it, Han Cheng turned his head and shouted to the people around him.

Hei Wa, who was burning the fire, and Wu, who was watching around there, all left here one after another after hearing the words.

He stared at the stove and Han Cheng closely with nervousness and anticipation, waiting for Han Cheng's action.

Wearing a bare 'leather apron' on his body, Han Cheng with bare leather cuffs and gloves on his hands and arms,

He turned his head and saw that everyone had left, so he held the pottery plate that was a lot higher than the inner wall of the vat with both hands, pulled it up, and then moved it to the side, and immediately there was slag with very high temperature coming out of the hole Flowing out slowly.

The extremely hot slag fell to the ground, making a 'chichi' sound, and stirred up a cloud of white smoke.

Han Cheng didn't let people pick up the slag in clay pots.

After waiting, he planned to lead people to build a relatively sloping slope here, and when the slag accumulated more and more, he would let them roll down the slope to the bottom of the gang bag.

Copper ore contains not only copper, but also other metals, such as gold and silver, which generally contain some.

However, Han Cheng still threw away the slag without the slightest hesitation. It can be said that he really treated gold and silver like dung.

This sentence seems inaccurate. In Han Cheng's eyes, these slags containing gold and silver are not as important as dung.

The reason why he was able to do so freely was that he was incapable of separating the slag again to get out the gold and silver inside.

The second is that the value of gold and silver is given to it by people. At this time, gold and silver cannot serve as equivalents, nor can they become the eyes of the devil.

You take a large piece of pure gold to exchange food with other tribes, and the person who owns the food will take the inedible and unusable gold for inspection, and then angrily throw it back to you. It will happen in all likelihood.

The slag does not flow very smoothly, which is related to the fact that there are many impurities in it and it is relatively viscous.

It appears that the boiler needs further modification.

The opening for excreting things should be changed from a flat opening to an oblique opening, so that the drainage will become much smoother.

After a long time, the slag was finally discharged.

Han Cheng asked the elder brother to get a pre-prepared clay pot and put it under the opening of the pottery juice, and then pulled out another pottery plate that blocked the opening, and the molten metal with extremely high temperature began to flow out slowly, falling into the In the clay pot below...

The scorching temperature gradually dropped, and most of the copper liquid in the clay pot also cooled and solidified.

The clay pot was smashed, revealing a purple copper ingot in the shape of half a pot.

Looking at a large piece of copper ingot, Han Cheng, Wu, senior brother and other people who were worried about this matter couldn't help smiling.

Wu, a pious old god stick, in line with the principle of giving all glory to the gods, began to praise the gods who had never paid any attention to him on the spot.

Han Cheng looked quite helpless. These were made by himself and others with a little bit of hard work. What does it have to do with the gods?

He thought so in his heart, but Han Cheng didn't say it out loud. After all, he was still wearing the gorgeous coat of the Son of God, and he was the biggest beneficiary.

After looking at the copper ingots, Han Cheng used a stick to poke the lumpy slag.

After turning it over with a stick, it was discovered that there was still a lot of solidified copper at the bottom of the slag.

No wonder the copper ingots refined this time are so good. It turns out that even a lot of copper liquid has been released.

It seems that the ore powder was put in a little too much this time, and it should be put in less next time.

Thinking of this, Han Cheng immediately called Shishi and put the copper ingots refined this time on the scale.

After weighing, a record was made of how much ore powder was put in this time and the number of copper ingots obtained.

In this way, when you do it next time, you will have a reference.

It is impossible not to waste a little copper liquid, but it can be less wasted than this time.

Of course, the quality of ore is different, and the ratio of copper content to slag will also be different, which cannot be generalized.

These detailed things need to be practiced again and again, and the original data is accumulated again and again, and then summarized.

Get the theory from practice, and then use practice to verify the theory and improve it. With the mutual confirmation of the two, you can always find a similar standard slowly.

Touching this piece of copper ingot, Brother Wu and others discussed it a lot. Wu said that it needs to be dedicated to the gods first, to thank the gods for their blessings to the tribe.

The elder brother said that he wanted to make a copper shield, so that he could become more brave when facing prey and enemies. The stone said that it was better to make some copper pens, so that they could be better on the ceramic board. lettering.

Han Cheng listened, smiling without saying a word. On the one hand, he was happy for the state of the people and the copper in the tribe.

On the other hand, it is because many of the wishes that everyone said are impossible to realize before getting tin or lead and getting bronze...

In the courtyard, Bai Xuemei, who was carrying a bamboo basket to feed mulberry leaves to the silkworms in the dustpan, suddenly frowned and pressed her lower abdomen with one hand, her face showing pain...