In the universe where Wei Qingyang lived in his last life, there are several ways to enrich and improve the purity of uranium ore, one is to purify it by electromagnetic isotope separators, the other is to purify it by gas diffusion method, and the third is to purify it through the Sorett effect. However, these methods have since proven to be ineconomical and inefficient. Later, after a lot of research, it was found that gas centrifugation is the best method.

In a high-speed spinning centrifuge, uranium-238 with a higher molecular mass that cannot participate in fission is squeezed on the wall of the centrifuge barrel, and uranium-235, which has a lower molecular mass and can be used to make a nuclear bomb, is enriched at the shaft. The enriched uranium-235 is then exported to obtain a higher concentration of uranium-235.

It should be noted that the so-called uranium-235 or uranium-238 here is in the form of uranium hexafluoride as a compound. A subsequent defluorination operation is required to produce uranium metal for use in nuclear bombs.

Wei Qingyang only knows the general process of producing uranium metal, but he does not know the specific technical details, such as how the high-speed centrifuge is manufactured, how it is connected in series, how the power is controlled, and so on. But he has a unique advantage, that is, he can use the world's spells instead of machines, thus avoiding and ignoring some technical details.

What he has now is only some uranium oxide, which is commonly known as yellowcake, and the purity is not high, mixed with a large number of impurities, so it will appear gray-black. There are still many processes that need to be done to make these things into nuclear bombs.

If you want to purify uranium hexafluoride, the first thing Wei Qingyang has to do is to turn the yellow cake in his hand into uranium hexafluoride. This requires a series of chemical reactions that require a variety of chemical raw materials, such as nitric acid, ammonia, fluorine, etc.

Wei Qingyang raised his eyes and looked around, only to see a void.

I can't even find some macroscopic substances, where can I find chemical raw materials?

At this moment, a Qingying giant sword was quietly conceived in the boundless white mist, and in an instant, with boundless might, it slashed towards Wei Qingyang.

Wei Qingyang raised his hands up and slashed the sword down with his palm. In the process, lightning flashed and thundered, and the star power exploded.

"Lightning?"

Wei Qingyang's eyes lit up.

He remembers that nitric acid can be naturally produced during thunderstorms. The raw materials for the formation of nitric acid, hydrogen, nitrogen, and oxygen, can all be made by magic.

Nitric acid problem solving.

Where does ammonia come from?

Ammonia is composed of hydrogen and nitrogen, and Wei Qingyang vaguely remembers that in his previous life, the large-scale production of ammonia was directly produced by the combination of hydrogen and nitrogen under high pressure and high temperature.

High temperature? The Burning Sky Flame can be solved.

High pressure? Zhenhai Jue can be solved.

Container? The dungeon net can be solved.

Wei Qingyang's brain was spinning rapidly, and while resisting the attack of the Lingyun Peak Great Array, he was thinking about the solution to one problem after another.

After finding solutions to all the problems, Wei Qingyang sighed softly. He raised his hand slightly, and a thick bolt of lightning immediately slashed into the billowing white mist. Around this flash of lightning, a torrent of wind and rain followed.

Qingyang Sect Spell, Nine Days Thunderstorm!

At the same time as the Nine Heavens thunderstorm was cast, his divine consciousness split instantly, closely monitoring all the changes that occurred in this space. After detecting the formation of nitric acid, he was immediately arrested with his senses.

In the Heaven Breaking Sword Array, Jiang Zisheng, who was always watching this closely, was overjoyed.

Although the power of the Nine Heavens Thunderstorm is great, it is still much worse than the Splitting Star Fist. Now, Wei Qingyang no longer uses the Splitting Star Fist, but changes to the Nine Heavens Thunderstorm, what does this mean?

The enemy has reached the end of his crossbow.

"Go on the offensive! That devil won't last long! ”

"Yes!"

Outside the Heaven Breaking Sword Array, after Wei Qingyang collected nitric acid, he immediately soaked the yellow cakes in his hand into it, causing it to immediately start a reaction to produce uranyl nitrate solution. After a series of complex extraction and purification operations, Wei Qingyang raised his hand and used the Heavenly Prison Earth Net to bind some hydrogen and nitrogen gas, and a Zhenhai Jue pressed down, accompanied by the Burning Sky Fire next to it, and the pressure and temperature inside the Heavenly Prison Earth Network instantly began to rise.

Ammonia was produced as expected. After that, Wei Qingyang reacted uranyl nitrate with ammonia to finally produce ammonium diurarate, and then added hydrogen to obtain uranium dioxide.

After that, Wei Qingyang used the spell he learned from a highly poisonous demon beast in the depths of Jupiter to make fluorine gas through the power of the stars, which reacted with hydrogen to produce hydrogen fluoride, and added water to make hydrofluoric acid.

Hydrofluoric acid was reacted with uranium dioxide to produce uranium tetrafluoride, and uranium tetrafluoride was reacted with fluorine again to produce uranium hexafluoride.

When the temperature is raised, uranium hexafluoride becomes a gas.

At this point, Wei Qingyang is about to start preparing for the next step of purification.

The purpose of this step is to separate uranium-235 from uranium-238. Uranium-238 is of little use, only uranium-235 can be used to make nuclear bombs.

Even in the previous life, this step was the most difficult step in making a nuclear bomb. Because it requires a lot of energy, and this is easy to detect from the outside world.

In the last life, there was a small country that was under sanctions, and even washing machines could not be imported. Because the drum of the washing machine can be converted into a centrifuge for separating uranium-235. But here, Wei Qingyang doesn't have to worry about being sanctioned.

But this is also a difficult point for Wei Qingyang.

This is because the speed requirements for this centrifuge are too high. It is necessary to achieve 600 revolutions per second in order to be able to separate these two gases, which have a very low molecular mass gap.

At the same time, even the most efficient gas centrifugal method for separating uranium-235 is actually very low. This requires thousands of centrifuges to work at the same time, and the uranium hexafluoride gas separated from the previous centrifuge is then separated by the next centrifuge relay, and so on, little by little, the purity of uranium-235 can be improved, and finally the purity that meets the requirements can be obtained.

"I'm going to have to go on it head-on."

Scattering a bolt of lightning with his hand, Wei Qingyang gritted his teeth and cast a spell again.

Still using the heaven and earth net as the shell, and the wind control technique as the shaft, a simple centrifuge was made. Under the effect of wind control, the centrifuge immediately began to spin at high speed. But even if Wei Qingyang tried his best, the speed of the centrifuge in front of him was only 300 revolutions per second, which was far from the requirements.

What's more, one centrifuge is not enough, thousands of them are needed.

With Wei Qingyang's current cultivation, it is almost impossible to greatly increase the speed. This involves not only the level of cultivation, but also the subtle control of the power of the stars. Wei Qingyang estimated that his cultivation would at least need to be improved by one more level before it could meet the requirements.

If gas centrifugation doesn't work, you'll have to try the rest.

"Gas diffusion?"

To put it simply, the gas diffusion method is to enrich uranium-235 little by little by using the principle that uranium-235 hexafluoride and uranium hexafluoride have different molecular mass differences, different molecular movement speeds in thermal equilibrium, and different opportunities to penetrate porous films.

The efficiency and energy consumption of the gas diffusion method are far worse than those of the gas centrifugation method, but correspondingly, its technical content is also lower and it is easier to implement.

Now you can't use gas centrifugation, you can only use stupid methods.

This still requires the use of the Prison Net spell, but with some tweaking. Wei Qingyang still used it to make the shell, and then inside the shell, another heavenly prison net was arranged, the difference was that Wei Qingyang deliberately made it full of holes, and through his own precision fine-tuning ability, the holes were made as small as possible.

Outside, Wei Qingyang also arranged one each of the Flame Technique and the Freezing Technique to regulate the temperature.

In this way, a simple gas diffusion separation device is fabricated.

After a little experiment, Wei Qingyang came to the conclusion that this road is feasible.

But the efficiency of this thing is so low that even to make a nuclear power plant-grade uranium-235 enriched at the level of only 3 percent, it would require more than a thousand of these devices, let alone weapons-grade enriched uranium with an enrichment of more than 90 percent.

There is no way, Wei Qingyang can only achieve this goal by expanding the number.

Fortunately, his previous experience in making millions of thrusters for that asteroid had given him a wealth of experience in the operation of an extremely large number of formations. So as soon as he raised his hand, many spiritual materials swarmed like raindrops, and each piece of spiritual material was quickly engraved with runes and formations. In the blink of an eye, tens of thousands of "Gas Diffusion Device" formations were made.

The formation can operate on its own, and there is no need for Wei Qingyang to use his divine sense to deliberately control it, he only needs to focus on the coordination and connection of different formations.

The uranium hexafluoride gas obtained through a series of complex means was immediately thrown into the "gas diffusion device" formation, and the work of enriching uranium-235 immediately began.

According to his estimates, due to the large number of installations, the enrichment work will be completed in a few hours at most, thanks to the increase in efficiency through the quantity.

After taking stock of his remaining reserves of star power, Wei Qingyang breathed a sigh of relief.

He realized that as long as he didn't use powerful spells, then these reserves were sufficient.

At the same time, in order to prevent the Heaven Breaking Sword Sect from disturbing his work, he also arranged several stealth formations, hiding himself and those formation devices.

It was only a matter of time before this stealth formation was broken by the Heaven Breaking Sword Sect, and it was impossible to last long. But that's okay, as long as it can last for a few hours.

Time slipped away slowly, tens of thousands of formations continued to operate, and in the process, uranium hexafluoride-235 gas was slowly, little by little, increasing its concentration.

When the work finally came to an end, and Wei Qingyang really produced high-purity uranium-235 metal through defluorination, his heart became heavy again.

This...... That's too little, and it doesn't reach critical mass at all.