Section 530

All the way back to the camp.

Lu Yu put down the clay.

He went directly to the storage room.

He took a lot of firewood and piled it next to the earthen kiln.

Then he chose a piece of open space about the same size as the earthen kiln and began to plan.

"It's here."

"The first step in making a kiln is to stack these firewood into a cone."

He did it while talking.

It took less than five minutes.

He initially piled the firewood prepared in advance into a long and thin pyramid shape.

"Eucalyptus branches are very good raw materials for making charcoal. As long as the operation is proper, the charcoal burned will be very perfect, both hard and durable."

"Of course, if you choose ordinary tree branches, it is also possible, but the effect will definitely be greatly reduced."

After the woodpile has a preliminary large size.

Next, just add firewood in circles according to this shape.

This work.

It looks quite simple.

But in fact, it is very particular.

It is necessary to leave enough gaps between the firewood, but it should not be too loose.

Because the stacking of the woodpile.

It will directly affect the success of firing.

If the gap is too large.

It is difficult for the branches to burn fully, and the yield rate will be greatly reduced.

And too loose and too fully burned is not good.

In order not to affect the yield rate, Lu Yu spent more than half an hour just to stack the wood.

The wood pile is about one meter high.

It occupies an area of ​​about two square meters.

The bottom is round.

From a distance, it looks a bit like a fire for help.

But it is more exquisite than an ordinary fire.

The branches are next to each other.

Very neat.

"Okay, almost..."

"With the wood pile, the next thing to do is to use clay to surround them in circles and make them into a kiln shape."

"It should be noted that the mud layer should not be too thick, just about the same as the palm, and try to keep it in the range of one centimeter to two centimeters."

Clay by the stream.

The humidity is just right.

No secondary processing is required, it can be used directly.

It saves a lot of trouble.

If it is dry clay, it will be busy.

Just mixing the clay is enough to torture people.

After a few more simple chats, Lu Yu got busy again.

Pull the bamboo basket to his side.

Take out the clay.

Along the edge of the wood pile, pile it up in circles.

Just like building an earth kiln.

There is nothing much to say about the whole process.

After a while, until it was about to be sealed, Lu Yu spoke again:

"There needs to be an opening at the top of the charcoal kiln, and it cannot be completely sealed."

"The size of the opening depends on the size of the wood pile. There is no established standard, just control it yourself."

Here.

The prototype of the entire charcoal kiln is completed.

From a distance, it looks like a small mound of earth.

Very interesting.

However, this is not the end.

A complete charcoal kiln also needs to open a vent at the bottom and plan out a "door line".

The vent is to facilitate the observation of the burning speed of the charcoal and facilitate timely sealing.

And the door line.

It is to make it easy to lift the kiln wall and take out the charcoal after the charcoal is burned.

These two details are also crucial.

Especially the vents on the chassis, which are absolutely necessary.

…

After four vents were installed at the bottom of the charcoal kiln.

Lu Yu took out the stone knife and drew an arched arc outside the kiln wall.

"Yu Shen, what is this for?"

"Who knows!"

"Immortal arts?"

"Do you recognize this formation?"

After looking at the barrage, Lu Yu shook his head and explained:

"Brothers, this is the door line."

"After the charcoal is burned, the kiln wall will become very hard."

"If you want to avoid damaging the kiln itself, taking out the charcoal is also a technical job."

"So, the door line has its place.."

"At that time, just gently scrape it with your hands, and the kiln wall will collapse along the outline of the door line. It is very convenient. The most important thing is that it will not affect the subsequent use of the earth kiln."

When the audience heard it, they suddenly realized it and said that Lu Yu was a little clever!

"6666!"

"Show!"

"Prepare for a rainy day!"

"Show me so much!"

...

After the charcoal kiln was completed.

Lu Yu took the fire from the fire and placed it at the opening above.

Ignite the wood pile wrapped in the charcoal kiln.

Holding the kiln wall.

Lu Yu blew the fire to help the combustion, while enduring the thick smoke, and winked:

"At that time, the fire will burn downward from the opening."

"In the opposite direction of the rising air flow."

"After a period of burning, when the fire moves from the top to the bottom, the firewood in the kiln will be converted into charcoal."

Soon.

When the fire spread completely, the fire above the wood pile became bigger and bigger.

Seeing this, Lu Yu continued to explain:

"The flames above the wood pile are volatile gases, CO and H2 are burning. Seeing these gases means that the temperature in the kiln is changing. This is a normal phenomenon."

As he said, he controlled the drone and let it fly to the bottom vent of the charcoal kiln.

"During the whole firing process, there is nothing special to pay attention to, but there is one thing to note, that is, every once in a while, you must observe the vents. If you can see flames at the vents, you must immediately use clay to block all air inlets, including the opening on the top of the charcoal kiln. When the temperature is completely cooled, the charcoal will be burned."

"666666!"

"Fuck, the anchor is so professional!"

"Brother, steady!"

"I am very curious, where did Yu Shen learn these weird knowledge?"

"It's interesting!"

"Gray fertilizer evaporates and turns black. Give the anchor a plane × 1! - Awesome!"

"The invincible second-year ghost beast gives the anchor an energy drink × 1! - 666, too bad!"