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The video was quickly connected, and Anna greeted quietly and gently in the office:

"Good morning, dear, why are you calling me so early? Is there something wrong?"

Ye Feng threw the camera at Alexander,"Look what he is holding in his hand?"

Alexander waved the metal detector in his hand.

"Metal detector? Did you find something again?"

She had a hunch that her boyfriend had found the gold of the Tsar's treasure twice, so it was normal for him to find it a third time.

Could it be that he wanted to arrange a sale with her?

Anna looked at her boyfriend with surprise and curiosity.

Ye Feng shook his head mysteriously:

"I did find something, but it wasn't treasure, it was something else. Do you have a method to absorb the gold sand?"

"Alternatively, pollution-free mining of mineral sands"

"Extracting mineral sand from the river bottom without pollution"

"Don't let the mud and sand be washed away with the river water."

He looked at Anna expectantly, but Anna was also confused. What is this?

Mining? Gold sand?

After connecting the dots, she suddenly understood!

Gold ore sand must be gold sand, right?

After careful consideration, she answered:

"It seems that there is nothing that can absorb gold, but pollution-free mining sand can!"

"Vacuum pump trucks can pump sand without pollution."

Vacuum pump trucks are similar to vacuum manure suction trucks.

It has a large steel tank and a thick plastic pipe connected from the tank to the target, which is sucked by pressure.

The vacuum pump is on the other side of the tank!

The working principle is that the pressure inside the steel tank is small, and the suction target is directly extracted from the mixed liquid into the steel tank.

The vacuum pump does not contact the extraction target.

Therefore, high-hardness ore sand can be sucked.

The blades of the vacuum pump will not contact the ore sand, so of course there is no fear of being damaged. The ore sand only enters the steel tank from the pipeline and settles at the bottom of the steel tank. When it is full, just open the warehouse and release it.

You can also only add water but not ore sand.

Large The vacuum pump has a very strong suction force and can easily suck gravel and concrete into the storage tank.

Not to mention the ore sand, as long as the suction force is strong and the speed is fast, the ore sand will not be washed away by the water, and it will be sucked cleanly and efficiently. It is much cleaner than mechanical sand extraction.

As for washing, you can go to another place. In a modern mining company, you can get it done by paying tens of thousands of dollars.

They have advanced automatic sand washing equipment.

It perfectly solves the problem of water pollution!

After being pointed out by Anna, Ye Feng suddenly realized that this method is indeed very useful!

He thanked Anna with excitement:

"Hahaha, you are so smart, how can you have such a smart wife!"

"Thank you so much, you helped me a lot this time. Thanks for your reminder."

"If it weren't for your method, I would have destroyed the environment!"

"Come over when you have time. It's not convenient to talk on the phone!" It's really not convenient to talk on the phone. The KGB is monitoring it. If this matter is discovered, it doesn't matter to me.

Anna will definitely be punished! Ye

Feng hung up the phone and immediately asked the system to help him buy twenty large oil tankers from nearby tank trucks.

Then he bought five high-power vacuum pumps.

Alexander also slapped his forehead.

Why didn't he think of this method? Vacuum pump trucks are very common!

Several people hurriedly began to prepare, planning to mine all the gold mines directly today!

At noon, the Irkutsk Auto Parts Factory delivered the oil tanks and vacuum pumps ordered by Ye Feng, and Ye Feng paid an extra 200,000 rubles for this.

The total cost was 15 million rubles.

After they were delivered, Ye Feng placed them all on the side of the small road on the back mountain of the farm.

Neatly arranged in order, he also asked the engineering team to drive a heavy crane over and prepare to start work.

And The salesman from the auto parts factory gave Ye Feng a detailed introduction to the usage and specifications of these things.

Ye Feng didn't care.

He just looked at the quality of the things.

After he found no problem, he signed the contract, paid the money, and hurriedly sent the sales and transportation personnel away.

There were only six people left on the scene, and the task was quite heavy.

Ye Feng arranged for Alexander to drive the crane to transport the steel tanks, and he and Petrov would operate it.

When Alexander was not driving the crane, he would also operate the sand pumping pipe.

The remaining girls were responsible for turning the pump on and off.

There is no need to hold the pipe.

The sand pumping pipe can be controlled by an iron ring fixed with a long pole, and it can be pumped slowly back and forth and left and right!

It doesn't take long to pump hundreds of tons of ore sand.

The silt ore sand that is one hundred meters long, two meters wide, and one meter deep is about two hundred cubic meters and weighs three hundred tons.

It should be almost finished today.

Ye Feng explained and demonstrated to everyone, explaining the specific techniques of how to use it, as well as gestures and commands.

"Let's get started. Everyone, take your positions and follow the method I just taught you. Work in pairs and cooperate freely!"

As soon as he finished speaking and was about to start working, Chris took the initiative to run over to join him, smiling and saying:

"Boss, let's work together. I'll serve you well!"

Ye Feng was speechless...

Alexander drove the crane and evenly arranged the silver oil tanks of heavy tank trucks one by one on the riverside.

One every five meters, all connected with pipes.

Only the vacuum pump needs to be replaced, not the pipes.

In this way, the speed is very fast, and the crane can be used to move to the next position in a few minutes, saving some time.

As the vacuum pump roared, the three sets of equipment and plastic pipes began to work hard, frantically extracting silt from the river. The river sand in the river was sucked into it like water.

"Damn, this speed is a bit fast!"

"And the key is that no mud or sand was washed downstream!"

"This method is indeed effective, but unfortunately a little too much water is pumped out, so the water must be drained after a few minutes."

Of course it is necessary to drain the water, it is impossible to only pump out sand without draining water!

Water is easier to be drained by a vacuum pump than mineral sand, and more than 80% is water. The water must be drained once every two minutes, and it is not drained directly, but at least ten minutes of sedimentation.

Otherwise, it will definitely pollute the environment!

Heavy metals and mineral sand can be suspended.

However, after ten minutes of sedimentation, most of them will settle to the bottom by themselves, and the remaining little is insignificant.

Three times in a row, half a jar can be sucked up.

Half a jar, fifteen tons, plus water may be nearly twenty tons, wet sand is much heavier than dry sand.

This. This will fill just twenty and a half cans! Two hundred cubic meters of ore is just right!

If it is too full, the truck will not be able to carry it, and it will be difficult to pump out without adding water, which will make unloading more troublesome.

Ye Feng, Petrov, and Alexander worked continuously for three hours without interruption, but they did not feel tired at all. On the one hand, it was because of the excitement of the gold mine.

On the other hand, it was because it was not very tiring, after all, they were all operating machines.

Moreover, after sucking for two or three minutes, they had to rest for ten minutes, so they could not feel tired even if they wanted to, right? It was easy and stress-free.

They discussed gold issues while working.

"Boss, how heavy is this ore? How much gold can be extracted? It won't be that after all this effort, we can't even get back the money for the oil tanks, right?"

Alexander denied.

"Absolutely not, I think there are at least several hundred kilograms of gold."

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