Of course, the mud embryo that has just been made cannot be burned directly, and after it is done, it is placed there and waiting to dry.

In this process, Han Cheng and Heiwa worked together to rebuild the stove with yellow clay and clay.

The scale is about the same as the previous one.

After it is built, it is dried for a day, and then it is lit on a fire to roast it so that it dries quickly.

The special clay pot used to make copper was also roasted by the fire, which would have accelerated its process, which would otherwise have taken too long to dry out naturally.

Eight days later, two new things were finally made.

After placing the clay jar on the stove and connecting the two, the copper smelting of the Qingque tribe began again.

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

This time, I put a lot of it, and I put six jars into it in a row before I stopped.

There is no need to worry about the ore powder flowing out of the hole left underneath, because it has been plugged from the inside with a clay plate long before this is done.

After the ore powder is poured in, the flame begins to burn, the wind gurgles and turns, and the scorching temperature gathers here, passing through the bottom of the clay jar, transferring the heat to the inside, and influencing the ore powder.

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

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

Han Cheng climbed the steps again, tilted his head back, and squinted at the liquid with high temperatures inside.

With a very high temperature, it is steaming upwards, which is a little unbearable.

"Get out of the way!"

After Han Cheng looked at it, he turned his head and shouted to the people on the side.

The black baby who burned the fire, and the witches who were watching there on the side, all stayed away from here one after another when they heard the words.

With nervous and expectant faces, he stared at the stove and Han Cheng tightly, waiting for Han Cheng's move.

Han Cheng, who was wearing a bare plate 'leather apron' on his body, and had bare board leather sleeves and gloves on his hands and arms, turned his head to look, and when he saw that everyone had left, he held the clay plate that was much higher than the inner wall of the clay jar with both hands, pulled it up, and then leaned it to the side, and immediately slag with a very high temperature slowly flowed out of this hole.

The extremely hot slag fell to the ground, making a 'whoosh' sound and raising a cloud of white smoke.

The slag thing, Han Cheng didn't let people use clay pots to pick it up.

Wait until he is going to lead people to build a relatively sloping slope here, and when the slag accumulates more and more, let them roll down the slope to the bottom of the gangbag.

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

However, Han Cheng still did not hesitate to throw away the slag, it can be said that he really regarded gold and silver as dung.

This sentence doesn't seem to be accurate, in Han Cheng's eyes, these slags containing gold and silver are not as important as dung.

The reason why he can do such a free and easy way is that he does not have the ability to separate the slag again and get out the gold and silver inside.

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

If you take a large piece of pure gold and exchange it for food with other tribes, and the person who has the food will take the gold that you can't eat and can't use to check it, and then throw it back to you in anger, nine times out of ten, it will happen.

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

It seems that this boiler needs further modification.

The mouth for excretion should be changed from a flat mouth to an oblique mouth, so that the discharge can become much smoother.

It took a while for the slag to finally be drained.

Han Cheng asked the senior brother to get a clay pot prepared in advance and put it under the opening of the pottery juice, and then pulled out another pottery plate with a blocked opening, and the molten metal began to flow out slowly with an extremely high temperature, falling into 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 a half-jar.

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 but smile.

Wu was a pious old god, and in line with the principle that all glory should be given to the gods, he began to praise the gods who had never paid attention to him on the spot.

Han Cheng looked quite helpless, these were all made by himself and others little by little, what does it have to do with the gods?

Thinking so, Han Cheng didn't say it, after all, he was still wearing the gorgeous cloak of the Divine Son, and he was the biggest beneficiary.

After seeing the copper ingots, Han Cheng used a stick to poke the slag that had become lumps.

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 there is a bit too much ore powder this time, so I need to put less next time.

Thinking like this, Han Cheng immediately called the stone and weighed the copper ingots refined this time.

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

So that the next time I get it, I will have something to refer to.

It's impossible not to waste a little bit of molten copper, but it can be less than this one.

Of course, the quality of the ore is different, the proportion of copper content and slag will be different, and it cannot be generalized.

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

Obtain the theory from practice, and then use practice to verify the theory for improvement, and under the mutual confirmation of the two, we can always slowly find a similar standard.

Touching this piece of copper ingot, Senior Brother Wu and others talked a lot, and Wu said that he needed to sacrifice it to the gods first, and thank the gods for his blessings to the tribe.

The elder brother said that he would make a bronze shield so that he could become more brave when facing his prey and enemies, and the stone said that it would be better to make some copper pens so that they could better carve on the clay tablet.

Han Cheng listened and laughed without saying a word, on the other hand, he was happy that everyone was in this state and that there was copper in the tribe.

On the other hand, it is because many of the wishes that are said to be impossible to achieve until the bronze is produced without obtaining tin or lead......

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

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