Chapter 546 (1/2)

Xicheng found the blue copper mine very early.

The color of blue copper ore is very bright blue, and there are more beautiful malachite in it. It is very conspicuous. Some tribes in Xicheng like to grind them into pigments and bring them back to Xicheng early.

Since Lanxi copper mine was discovered early, why didn't it start early?

Because this copper mine is not enough.

The hardness of pure copper is not high, so it can't be made into weapons. It has no practical value for primitive people. What has practical value is copper alloy.

For example, brass is an alloy of copper and zinc, and bronze is an alloy of copper and tin. In order to smelt high hardness bronzes, tin ore must be found.

Fortunately, before the winter of last year, chief Youshi finally found the tin ore in the south. This kind of tin ore has obvious characteristics and metallic luster. Ye Xi recognized it at a glance, and happily rewarded chief Youshi with a king's animal nucleus.

After the copper and tin mines have been found, copper smelting can be carried out.

Ye Xi decided to make copper by fire. First of all, he built a carbon kiln.

He led his people to build five huge carbon kilns in the back mountain with stone and cement.

These charcoal kilns are round like yurts. They look naive, but they have a great effect. A steady stream of wood is sent to these kilns, and with white smoke rising from the holes in the kilns, charcoal is also formed in large quantities.

After making charcoal, ye Xi built two smelting furnaces for copper and tin.

Copper and tin ores and charcoal are sent into the furnace, and copper and tin blocks of slag sample are sent out.

These copper blocks and tin blocks are mixed with impurities and need to be further purified. Because of the low melting point of tin, it is easy to purify, but it is difficult to melt copper because of its high melting point.

Ye Xi was in trouble for a while.

Knowing Ye Xi's difficulties, Zhuo enthusiastically wanted to help. Because of its high flame temperature, it could melt copper blocks. However, ye Xi knew that it was not a long-term way to rely on Zhuo, so he refused it without hesitation. He spent several days designing a more scientific large-scale furnace, and tried to build an original large-scale blower to improve the temperature in the furnace.

Finally, copper was purified successfully.

Next, it is very simple to make bronze.

just add tin into pure copper and mix the two thoroughly to get liquid bronze. Then make the mould and pour it directly with liquid bronze.

In fact, although the bronze smelting process mentioned above is simple, it is difficult to operate in practice.

For example, the person in charge of charcoal burning always forgets to hold his breath when taking out the charcoal, causing carbon monoxide poisoning. For example, the crucible in the furnace is too hot to take out, and the hook shaped rod is polished with hard stone tools to solve this problem.

In addition, after several tests, they adjusted the tin content to the most appropriate proportion, which greatly increased the hardness of bronze, but it was still not enough. Their bronze hardness was not comparable to that of Jiugong.

What additional metal is needed to make the bronze harder is a question that needs to be explored.

……

Ye Xixian poured a huge mace with bronze liquid.

This is a heavy bronze mace with sharp spines on its head, which is higher than human beings. Ordinary people will have a lot of difficulty to lift it, but all Xicheng soldiers are crazy.

Because this kind of attack weapon is too in line with the primitive people's aesthetic!

They just like the weapon of direct violence! What kind of Stone Club, stone hammer, fish bone stick is all in front of it, all slag!

In the envious eyes of everyone, he finally got the mace bravely.

From then on, he gave up his original weapon and replaced it with a bronze mace.

When he was hunting, Yong was so high that he swung the bronze mace so high that he smashed the head of the fierce beast with a bang. Then he cracked, and the fierce beast's skull was smashed to pieces. Even the brain inside the skull was pierced by the long thorn on the wolf's tooth stick, so he could not die again.

When you see a ferocious beast, you can bang a stick. If you see a fierce beast, you will give a stick. As long as you don't have a huge body, you can use a stick to deal with it. It's very violent.