"It's cuprite ore !!" Zhao Yunxiang looked at the other side of the stone, which was full of crystalline red crystals with a metallic luster.

It smells of copper, and it's a copper mine!

Cuprite is a metal ore from which pure copper can be extracted, but its melting point is 1083°C, which is a major challenge for kiln smelting.

The color of cuprite ore is still very bright, which proves that it has not been oxidized for a long time.

If cuprite is exposed to the air for a long time, it will darken due to oxidation, turning dark red or purple.

"Wait a minute!"

"If the copper ore is what they found, then ...... There may be other copper ore or copper ore associated with these stones!!"

Cuprite is mainly produced in the oxide zone of copper deposits, and is often accompanied by natural copper, malachite, azurite, silica malachite, and limonite.

Thinking of this, Brother Xiang is very excited!

Zhao Yunxiang put down the copper ore in his hand, and once again devoted himself to the work of finding stones, the gravel on the ground was piled up very high, like a small mountain, and Zhao Yunxiang found 4 stones after pulling for a long time.

These are three pieces of cuprite ore and one piece of azurite, and the discovery of these four stones is enough to prove that there is a copper vein around it!

"Lin Hao, come here!" Zhao Yunxiang immediately called.

"Great ......"

Lin Hao was busy after coming over, but was interrupted by Zhao Yunxiang, and he asked eagerly. "Where did you get these stones?"

"Yes...... I found it from the foot of the mountain over there. Seeing that Zhao Yunxiang was so excited, Lin Hao was inevitably a little nervous, the stones were found by him with people, and they were all found from nearby.

"Hurry up, take me there!!" Zhao Yunxiang put down a few pieces of copper ore in his hand and said quickly.

Copper ore can be made into pure copper, which is the wires, cables, and copper pipes we see on the market.

Zhao Yunxiang didn't want to make wires and so on for the time being, because the development of electricity was still a bit far away for him, and he was eager to make bronze now!

Bronze is made of red copper with tin and a little lead alloy, and the combination of red copper and tin can make red copper discolored, while greatly increasing hardness and strength.

Because copper and tin are fused, the strength increases, which will inevitably reduce the toughness, and if the same amount of lead alloy is added, then the toughness will be increased while the strength is not weakened.

"Bronze!!" Zhao Yunxiang came to the front of the mountain, and there were indeed many stones scattered on the ground.

Not far ahead, there is a huge stone, which is about 3 meters long and 2 meters high, and the stone is full of red crystals.

"What a big copper ore!" Zhao Yunxiang stretched out his hand and stroked the huge stone, there were many impurities in the stone, red copper, blue copper, malachite, and limonite were intertwined.

"That's the case...... Lin Hao said, "A few days ago, because the gods were angry, the mountain shook, and this boulder rolled down from the mountain, smashing many trees, and finally rolling down here. ”

The stone that I had just carried back was the fragment that had fallen from this boulder, after all, this boulder had rolled down from the mountain, and I don't know how many boulders and trees it had touched.

"Let it be here for now, and then get these copper ores when the pottery is fired, and then refine the bronzes. Zhao Yunxiang frowned and thought, to make bronzes, it is also necessary to add tin and lead alloys.

"That ......," Lin Hao said as he looked at the huge red copper ore, "If you really want this, we can collect it for you." ”

Primitive people still use stones, such as hitting boulders directly with stones, and small pieces of stones can be obtained.

"It's not necessary for the time being, let's wait until I make the pottery. Zhao Yunxiang looked at the position of the sun, it is about 10 o'clock ~ 11 o'clock, and he must go back to build the kiln as soon as possible, and mark the exact time at the same time.

Come to the Clan!

Zhao Yunxiang personally went into battle, and he first drew a circle on the ground with a wooden stick, which was the general area of the kiln.

In order to facilitate the burning of bricks and the making of glass and the smelting of metals in the future.

The diameter of the circle is about 2 meters, which also determines the amount of burning in the kiln, and it takes a lot of firewood to supply such a huge kiln.

Of course, if you can find coal, it will be even better, you can make coal into coke, the temperature of coke after burning can reach 1500 degrees, and it is very efficient to make iron with coke or something.

Now instead of thinking about coke, it is time to build a kiln, and Zhao Yunxiang first mixes mud with stone.

The outline of the scribing is covered with soil, and the thickness of the soil should be about 10 cm, which is the wall thickness of the kiln.

The stones are piled up and the soil is evenly wrapped, and the operation is very simple.

"You're here to help, too, and put it together together. Zhao Yunxiang simply operated it, and the people of the Alpha tribe had watched it for a long time and had mastered the basic production.

Human beings have a strong ability to imitate, and their thinking ability is the best among all living beings.

A few people worked together to make the kiln, and the rest was still transporting seawater to dig the loess and carry small stones.

It didn't take long for the height of the kiln to reach 30 centimeters, which was just enough to make a furnace strip.

The stove strips of the kiln are not difficult to make, Zhao Yunxiang is made from dry branches, which are very hard and resistant to pressure.

Simply make a grid out of thumb-sized branches, each in the shape of a 10-centimeter square, and wrap the mud around the grid when it's done.

"What's the use of you doing this?" Lin Hao looked at the grid covering the kiln in confusion, because it was completely wrapped in soil, and the size of the grid had also become about 5 centimeters.

"This is the furnace, and it is also the support body where the mud is placed, and the fire is ignited under the kiln, and the flame can burn through the small holes of the furnace bar, continuously heating the kiln. ”

Zhao Yunxiang also made a few pillars out of thick wooden sticks under the kiln, which were also wrapped in clay, which was the support of the stove.

After all, a stove made of twigs covered with dirt is a bit fragile, and if it breaks under the load, then the gain outweighs the loss.

"Uh......" Lin Hao scratched the back of his head, indicating that he didn't understand this.

But it doesn't matter, he's just a layman, he just needs to follow orders.

"Alright, come over and help lift it up and put it on the kiln. Zhao Yunxiang beckoned a few primitive people, and several people lifted the heavy clay stove together and carefully covered it on the foundation of the kiln.

At the same time, Zhao Yunxiang also moved the flame over, and at this time, the flame could be used to evaporate the water inside the kiln.

In fact, his main purpose is to make the stove dry quickly and not fall off.

After all, the main trunk of the kiln is still made of wood, and the outer layer of soil covers it to protect and insulate the temperature, and if the soil wrapped around the main trunk of the furnace falls, then the stove is likely to be broken or collapsed by the flame.