After five hours of firing and cooling, the fire in the kiln has been completely extinguished.
Half of the ignition stars are no longer visible.
After pyrolysis of firewood, a strong smell of charcoal fire swept over in an overwhelming manner.
Talk about it.
Lu Yu picked up a small wooden stick on the ground.
The gully along the door line knocked continuously.
It didn't take a while.
The hard soil in the gate line collapsed.
A dark mass emerged from inside.
Breathing heat and smoke constantly.
See you.
Lu Yu was very pleased and hurriedly zoomed in to watch the camera carefully.
"Brothers, look--"
At this moment, the original off-white eucalyptus branches, after incomplete combustion, have already turned into pieces of charcoal.
Gently grabbed with a wooden stick, they rolled down one after another.
This amorphous carbon not only fully maintains the original structure of the wood.
Tar often remains in the pores.
At the end of primitive society, it was this amorphous carbon that people used when smelting bronzes and irons.
With this thing, copper smelting by fire will be much more convenient!
As long as the temperature is controlled and the copper material is reduced, it should not be a problem!
"6666!"
"Really turned into charcoal!?"
"Pose up!"
"You can BBQ!"
"Qianli Jiangling one day also presented to the anchor 666 × 10!-a little interesting!"
"If you don't repair a day, you will feel uncomfortable and give it to the anchor plane × 1!-lying trough! The anchor is really amazing!"
"Ride up to eighty miles to give the main super rocket × 1!-Be convinced!"
Talking.
Lu Yu picked up a piece of charcoal with good integrity and showed it to the audience:
"It looks pretty good."
"This amorphous charcoal not only provides high temperature, but it is also a great reducing agent. It is also a good choice for heating and grilling food in cold areas."
"The charcoal should be enough for us to use for a long time. Even if it is not enough, it will be fine. If necessary, it will be burned again in a kiln. The method is also very simple. Just like before, pile the firewood first, and then use it. It is enough to block the door line with mud. As long as the door line is still there, the charcoal kiln can be used repeatedly, which is very convenient."
As Lu Yu said, he took out the charcoal in the kiln with a wooden stick and set it aside.
Returning to the furnace again, he first added some firewood to the fire to maintain the fire.
Wait until the fire is almost burned before speaking:
"Okay, everyone, everything is ready."
"You can start--"
"First of all, you need to lay a layer of charcoal as a base. After the charcoal is completely red, you can directly drop the ore powder. You don't need a container, just throw it into the fire and burn it."
The ancient method of smelting copper is actually very simple.
In the beginning, there was not even a furnace. Usually, a pit was dug casually, a pile of fire was started, and the ore powder was directly thrown into it.
It was not until later when productivity developed to a certain level that people began to learn to use furnaces in order to obtain better quality metals.
Immediately.
After pouring the mineral powder, Lu Yu said nothing, and poured another layer of charcoal on it.
"Charcoal is more beneficial."
"The more the better."
"The more carbon, the higher the temperature, and the reduction effect will naturally be better. This must not be saved."
During the talk, the entire furnace was completely covered with charcoal.
Thick smoke is blowing out.
At this time, Lu Yu was not idle, and hurriedly pulled the drill bow of the blower—
"call--!"
"call--!"
"call--!"
As the bow drill pushed and pulled, the bark and fan blades in the blower also started to work.
The effect is really good.
The wind is strong and persistent.
After a while, the inside of the furnace turned red.
"The fan blades in the blower have no angle, so they can provide sufficient wind regardless of forward and reverse."
"Our task now is to operate a blower to keep the furnace warming up and burn copper oxide."
"This process will be very long, ranging from one hour to two or three hours, so work harder-and try to complete it before it gets completely dark."
The voice just fell.
Lu Yu's hand speed rose sharply.
The fan blades of the blower screamed and kept blowing red charcoal fire!
ten minutes later.
When all the charcoal in the furnace turned red, Lu Yu gradually relaxed and rested for a while.
"call--!"
After taking a breath, Lu Yu continued:
"Let it burn for a while, and at this time, we will use the remaining mud and pinch a molten cup out."
The melting cup, as the name implies, is a container for melting copper.
Just put the reduced copper material into it and bless it with charcoal fire, it can be smelted into liquid copper.
The production of the melting cup is very simple.
Slightly knead with mud.
You can control the size by yourself.
As for the method, it is no different from making pottery cups.
First use mud cake as a base.
Then use mud strips to surround the wall.
Finally, the seal is smoothed.
quickly.
It only took five minutes for a delicate clay small cup to be made by Lu Yu.
"With the melting cup, the harvested copper material can become liquid copper."
"At that time, we only need to pour the liquid copper into the muddy mold, and the stone axe will be roughly formed..."
After talking, Lu Yu returned to the furnace and checked the fire.
The stove was red.
Burnt out carbon ash is everywhere.
Seeing this, Lu Yu couldn't help but said, poured a lot of charcoal into it again, and then picked up the drill bow again, and pulled it crazy—
"call--!"
"call--!"
"call--!"
...
Unconsciously.
The gloomy sky was dimmed again.
The wind is getting bigger.
The woods rustled.
Soon, more than half an hour, just passed by.
The newly added charcoal has also started to fade from red.
Noting this scene, Lu Yu put down the bow drill and probed the situation in the furnace.
At this moment, the charcoal ash below has already accumulated a thick layer.
Large and small slag, clearly visible.
"Brothers, you should be able to open the furnace."
"Look for something hard first, poke through the door and look at—"
After happily reporting the results of the smelting to the audience, Lu Yu took the stone axe, aimed at the hard soil at the gate line, and hacked a pass.
"Wow!--"
After that, I only heard a clatter.
Numerous debris and burnt charcoal rolled down from the door.
Scattered the ground.
See you.
Lu Yu picked up the clay pot and poured some water on it.
"Ziz-!"
Next second.
The steaming white air rose up, quickly blocking everyone's sight.
Immediately.
After the residue had cooled down completely, Lu Yu picked up the melting cup and leaned over in the ash for a long time.
As a result, it didn't take a while.
Just inside was a "golden pimple" with the size of a thumb cover and a yellow surface.
"Hey, brothers, see what I found--"
Facing the camera, Lu Yu raised his mouth and muttered.
At this moment, the audience in front of the screen also clearly saw this scene!
"Lying trough!"
"Is this copper?"
"6666666666666!"
"Great!"
"This... is also amazing?"
"Earth OL Supreme Player!"
"Is this the age of bronze?"
"Anchor, you are invincible!"
"Gosh, I'm moved!"
...
Looking at the barrage, Lu Yu smiled and said nothing.
It took a while for the drone to re-point itself.
"How? It's hard to imagine?"
"Without the help of any modern tools, we have obtained precious copper materials. Ladies and gentlemen, this is the charm of the original technology, which is why human civilization can continue to this day... I succeeded, I really succeeded... …"
A glance at the drone.
Lu Yu was very happy, with tears in his eyes.
Along the way.
Everything here is really too difficult for him.
Sixty days of extreme survival.
At this moment, finally ushered in a different kind of dawn.
"These coppers have epoch-making significance for my survival challenge."
"Remember what I said on the first day of landing on the island?"
"Brothers, today, they are realized--"
Lu Yu's survival start, in addition to wisdom and hands.
There is nothing else.
There is no food.
There is no water.
No clothing.
No place to live.
There is no direction.
There are no traces of all modern civilization.
But today and now, he not only survived miraculously, but also obtained precious metals and entered his own bronze age.
A grain of copper.
For modern civilization, it is simply not enough.
Because this thing is so common!
But for an unarmed person, its meaning can be magnified indefinitely, and it can even create a civilization freehand and compete with the sinister nature!
The significant impact of copper on the history of human civilization is unmatched by any material.
It is the first widely used metal.
The effect is so great that there are two stages in the history of the development of human civilization named after its alloy.
Also known as the Bronze Age and Sub-Bronze Age.
If humans did not find copper at that time, modern life would be unimaginable.
From industry, daily necessities, architectural decoration and even the art field, it may be subject to various limitations, and even the entire earth civilization will be bankrupt!
"Copper is not only an ancient metal, but also a modern engineering material full of vigor and vitality."
"From the primitive era to today, mankind has completely entered a colorful, highly civilized society characterized by electrification and electronic information! But the metal of copper has not only been eliminated, but has been more widely Application has deeply penetrated into all aspects of production and life, and has become an indispensable and important metal for the rapid development of mankind in the 21st century."
"With copper, although there is no guarantee that the rest of the day will be smooth, it will definitely help us a lot."
After carefully putting the copper grains into the cup, Lu Yu leaned over again to find it.
After cooling, Jin Cancan's copper particles are easy to find.
Contrast with the color of carbon residue.
A quick glance will give you an idea.
Immediately.
According to the above method, Lu Yu took out all the carbon residue in the furnace.
And poured a large can of cold water on it.
"Ziz-!"
In a moment.
When the white gas disappeared completely, he leaned over again to find it.
After quenching, the copper material and the carbon residue are completely separated.
The colors are also bright.
There are almost no impurities.
Within five minutes, the melting cup in hand was filled with dangdang.
Against the background of the fire.
The brass in the cup sparkled.
Full of metallic luster.
If all these copper materials are smelted, creating an axe blade should be more than enough.
"Brothers, today is another big harvest day."
"It's so rare."
"Unsurprisingly, tomorrow we will be able to return these copper materials to the furnace and rebuild."
Looking up at the gray night sky, Lu Yu continued anxiously and said:
"Anyway, I hope it won't rain tomorrow."
"Okay, it's not too early. After a busy day, let's eat something first, then get a good night's sleep, and wait for our energy to recuperate before we start to do the rest."
The night is deep.
No starlight.
After properly placing the melting cup, Lu Yu went to the hen house and took a turkey egg.
Sit down by the fire.
While frying with stone slabs, I chatted with the audience.
At nine o'clock in the night.
After eating something briefly, Lu Yu reluctantly turned off the live broadcast, and then returned to the house, where he fell asleep.
the next day.
At six in the morning.
Maybe yesterday's prayer touched God.
very lucky.
There is no rain on the island.
But the weather conditions are no longer optimistic.
The continuous strong wind has been blowing for several days.
The distant coastline is choppy.
Lu Yu knew that his good day should be a few days away.
The first major storm in 2020, I am afraid that it will soon arrive as scheduled, sweeping the entire Oridia.
In fact, as early as a few days ago, the Meteorological Bureau of Fiji's main island has issued a red warning of storm 1 this year.
The two major airports on the island have been closed.
According to the prediction of relevant experts, it is affected by the low-pressure cyclone.
Within a week.
This year's first typhoon should set off huge waves in the South Pacific.
The director's team and the security team were very worried about Lu Yu's safety. They contacted him early in the morning to prepare him in advance, and the helicopter team was ready.
If the situation changes, please turn on GPS rescue as soon as possible.
Lu Yu readily agreed.
Said you can cope.
But if an accident happens, they will definitely be contacted.
After finishing the Lianmai with the team members, the time came to 7am.
Seeing time is almost up.
Lu Yu immediately started live broadcasting.
Because of the foreshadowing of yesterday, early this morning, the audience could not wait for the screen.
"Feather God early!"
"Excited, want to see the follow-up!"
"Wait a day, and finally come!"
"I really want to see how the anchor turned this pile of scrap copper into iron axe!"
"Yesterday, Yushen took the first search on Weibo again! (Laughing and crying)"
"How many times this year is it the first?"
"Awesome!"
...
Organized the messy long hair.
Lu Yu greeted the audience and went straight to the topic
"Hoo, meet again..."
"If I remember correctly, today should be the fifty-third day of my challenge."
"Yesterday, after some hard work, I not only obtained charcoal, but also successfully obtained a super practical metal-copper."
"And today, it is everyone's long-awaited creation of a copper axe!"