Hand rubbing nuclear fusion live in the wilderness

Chapter 439 Method of refining uranium 235

The ion-adsorbing resin **-1 industrial robot piled up like a hill is sent into the pre-prepared pool.

The configured analytical agent was poured in, and fine bubbles appeared again on the surface of the off-white resin.

This is the performance of the ion-adsorbing resin when it is melted by the analytical agent. Just like aqua regia can dissolve gold, when the analytical agent dissolves the resin, impurities that are insoluble in the analytical agent will be left to further extract uranium.

This step also takes time, but it is much shorter than the previous refining.

It took nearly six hours, and under the erosion of the analytical agent, all the ion-adsorbing resins were completely dissolved in the water pool.

By this time, the concentration of uranium ions in the pool was already quite high. If someone really jumped in to take a bath, they would really not survive the next day.

Some viewers in the live broadcast room were quite curious about the composition of the analytical agent. Won didn't explain it, so these people kept asking in the live broadcast room.

[Anchor anchor, what's the name of the analytical agent? 】

[What are the ingredients?How to configure ah. 】

【Can you elaborate a bit?After all, we are all good students who love to learn! 】

[Don't talk about the key points, is this different from the teacher not focusing on the key points in class? 】

[I'm going to take the college entrance examination in one month, and now should be the best time in my life, I hope to go further!So please tell the anchor. 】

[Big ball, why are you asking such details?Do you want to nuke? 】

[Speaking of nuclear bombs, anchor, don't forget that I customized it before, and I sent you the mailing address. 】

[Can it be customized? 】

[Of course, one hundred super fires can find this anchor to customize one——]

[One super fire is 5000 yuan, and one hundred is 50. Damn, is it so cheap? 】

【Cheap?I'm sorry, I'm a poor guy who can't afford 50, ┭┮﹏┭┮】

[Although I can't afford 50 yuan, it's really cheap to buy a nuclear bomb for 50 yuan. 】

[50 is really cheap, but unfortunately I don’t have any money. If I had money, I’d like to order a hundred. Fifty will be given to the little devils who live a good life, and the other fifty will be theirs. universe country. 】

There was a joke in the live broadcast room, after seeing these remarks about customized nuclear bombs, Han Yuan was a little bit dumbfounded.

"Analyzer is actually a resin dissolver."

"Solvents such as ketones, esters, strong acids, ether alcohols, chlorinated hydrocarbons, etc. can be used as resolving agents, and these things have good solubility for resins."

"There are many kinds of it and it is very common, so I didn't talk about it."

Shaking his head, Han Yuan simply responded to the question about the analytical agent.

This aspect is indeed not a core technology. Anyone who has an understanding of resins knows that even special ion-adsorbing resins can be dissolved by common sulfuric acid.

It just means that different analytical agents are used, and the final products are also different, and the precipitants required are also different, and the precipitated uranium compounds are also different.

This place needs some attention.

It took some time to filter out the analytical agent, and after filtering out the insoluble impurities inside, Won was mixed with a precipitating agent.

The precipitant he used this time was ordinary sodium hydroxide.

After a large amount of sodium hydroxide was thrown into the pool, the uranium ions in the resolving agent immediately reacted violently, and the grayish-yellow precipitate continuously fell to the bottom of the pool.

These precipitates are sodium diuranate (Na2U2O7), and sodium heavy oleate can be used to extract uranium 235 after operations such as extraction, back extraction, crystallization, three-phase separation and filtration.

Sodium hydroxide was allowed to dissolve the precipitated uranium in the pool, and the won came to the other side.

There are hills of soil piled up here.

These soils are separated from the solution.

The solution pumped out from the ground contained a large amount of uranium ions, but it also contained various impurities such as soil and gravel.

And these impurities also contain a large amount of uranium, the amount is not as much as that in the solution, but it is still quite a lot.

This part of the uranium won also needs to be extracted, otherwise it will be piled up here for a long time, which will cause great damage to the surrounding ecological environment.

After all, the uranium soil was buried underground before, and there was a layer of cemented conglomerate as an isolation. Now that it is exposed, even if the radiation is low, it will affect it after a long time.

There are different methods for extracting uranium from soil and extracting uranium from solution.

For the soil, Han Yuan instructed the X-1 industrial robot to transfer it to a large pit, and then poured a large amount of dilute nitric acid into it until all impurities were covered.

After the nitric acid is added, just stir.

Twelve X-1 industrial robots are responsible for this task.

The purpose of stirring is to dissolve uranium dioxide in impurities such as soil and gravel in nitric acid.

The principle is that uranium dioxide can be dissolved in strong acid, it can slowly react with hydrochloric acid and sulfuric acid, and dissolve.

Compared with hydrochloric acid and sulfuric acid, nitric acid dissolves it faster.

This is a very old method of refining uranium.

When the atomic bomb was first manufactured, almost all countries used this method to extract uranium from uranium ore.

In the live broadcast room, the process of refining uranium from Korean won made the experts from various countries squatting in the live broadcast room feel a little moved.

Especially Hua Guo.

In the early days of the founding of the People's Republic of China, people were really poor and white, and they didn't understand anything.

Not to mention the manufacture of atomic bombs, it is not clear where there are uranium mines in the whole country.

Fortunately, the big brother at that time was still a good big brother and sent some experts to guide him.

Due to time constraints, it was finally decided that uranium exploration and mining should be done by the whole people.

After the mobilization order was issued, more than 2 geological teams conducted a large-scale survey across the country, and finally identified several uranium mining bases.

The hard part is how to mine uranium and select it.

This was a big problem in the 50s, when uranium ore beneficiation and uranium ore processing plants were not built, and research units urgently needed a large amount of uranium dioxide for experiments.

After all, the foundation was weak at that time, and I didn't know anything about making a nuclear bomb for the first time, so I needed to try a little bit.

In the end, the method adopted was just like this anchor, digging in the earth pit, filtering with cloth bags and tofu bags, using a large iron pot for cooking or other things as a reactor, and then pouring sulfuric acid and nitric acid into the pure artificially. Uranium is extracted from uranium ore.

I'm afraid many people don't know where the first batch of uranium raw materials for making nuclear bombs came from in the early days of the founding of the People's Republic of China.

In fact, the first batch of uranium raw materials did not come from the national exploration team and professionals.

But from ordinary people.

At that time, farmers in the countryside really sacrificed a lot in order to refine the yellow cake.

Not only is there no protective equipment such as masks, goggles and gloves, but also the kind of mill that ordinary people grind their own grain is used to crush and refine uranium ore.

After crushing, it needs to be filtered. What if there is no professional filter cloth?
Use the tofu bag to filter, one by one.

It was impossible for the common people at that time to discard these things, but the consequences of continuing to use them can be imagined.

In this way, through the nationwide uranium smelting, a total of 163 tons of ammonium diuranate smelted by local methods were obtained in just two or three years.

It provided raw materials for the production of nuclear fuel for atomic bomb tests, which in turn bought time for the development of the first atomic bomb.

It also allowed Huaguo to straighten its spine in the international community for the first time, and no longer fear threats.

After the precipitant extracted all the uranium in the analytical agent, it took South Korean Won another five days to extract all the uranium in the impurity.

In the end, a total of about one cubic meter of sodium diuranate and uranyl nitrate was extracted from [-] tons of infiltration liquid and impurities.

In the wilderness without any industrial foundation, it is almost the limit to be able to do this.

Sodium diuranate and uranyl nitrate from these volumes will be transported back to the Amazon rainforest base for further processing.

If the density of uranium metal is 19.05 grams per cubic centimeter, then this cubic uranium compound is close to 20 tons.

Of course, because it is not a dense metal structure, in fact, this cubic sodium diuranate and uranyl nitrate is only 14.73 tons.

With the assistance of industrial robots, South Korea successfully loaded the cubic sodium diuranate and uranyl nitrate into the lead box prepared in advance and transported it back to the Amazon rainforest base.

Here, he will do further extraction, stripping, crystallization, three-phase separation and filtration of these sodium diuranate and uranyl nitrate.And extract the uranium 235 and uranium 233 isotopes inside.

Sodium diuranate and uranyl nitrate **-1 industrial robots on the aircraft moved into the factory.

After a series of treatments such as extraction, stripping, crystallization, three-phase separation and filtration, sodium diuranate and uranyl nitrate are all uranium hexafluoride.

In the end, the Korean won received 10.97 tons of uranium hexafluoride.

Uranium hexafluoride is a colorless or light yellow crystal at normal temperature and pressure.

But it is extremely easy to vaporize and volatilize, and it will sublimate at 56.4°C.

Therefore, these uranium hexafluorides are stored in a constant temperature box, and the temperature in the box is maintained at zero degrees to prevent the vaporization and volatilization of uranium hexafluoride.

The incubator is stored in a lead box, which avoids the problem of radiation.

Although the radiation of this level of uranium hexafluoride is still not very high, there will be no shortage of protective measures.

In fact, strictly speaking, things like uranium hexafluoride should be kept in gas cylinders, not in thermostats.

Because it is very unstable, it will react to form uranyl fluoride (UO2F2) and hydrogen fluoride, which are very soluble in water and very toxic, when it comes into contact with humid air.

But for the Korean won, this preservation is only temporary.

Soon the UF[-] will be disposed of.

When experts from various countries in the live broadcast room saw uranium hexafluoride, they already knew what method the anchor would use to separate uranium-235.

And tens of millions of viewers also came to their senses under the reminder of some "knowledgeable" people.

[Uranium hexafluoride was originally separated from uranium 235 by gas diffusion method. 】

[I remember that uranium hexafluoride is not a gas?Why is this anchor solid? 】

[It is a solid at normal temperature and pressure, and it will become a gas when the temperature rises to 56 degrees. 】

[Isn't the extraction of uranium 235 done with some kind of centrifuge? 】

[It takes too long for a centrifuge to separate uranium 235. This method has long been out. Nowadays, countries all over the world manufacture high-concentration uranium 235 by using uranium hexafluoride and separating it by gas diffusion. 】

[My school has uranium compounds. . .It was left by a site survey party. . . 】

[Actually, uranium is not uncommon. It is found in soil and marble. Because uranium can be refined to make uranium-235 nuclear bombs, it feels far away from life, but it is actually close by, and there is a lot of it.The water you drink every day can be extracted to make hydrogen bombs, in other words, you are drinking nuclear fuel every day]

[So this is why people who drink H2O die? (=ω=)(=ω=)]

【Uranium: I was originally a white metal, but because of some reactions that should not have happened, I became green, and I will always be green in people's hearts.】

【Honey uranium tea is so delicious ()】

[Hahahaha, a drink that you can only drink once in a lifetime! 】

[Suddenly remembered a sentence, don’t throw away the used uranium, wrap it in neutrons, give it a sledgehammer, and the children next door will cry. No, it’s gone in ashes. 】

After seeing uranium hexafluoride, the audience in the live broadcast room kept discussing and joking.

Not to mention them, even the nuclear experts squatting in the live broadcast room thought that the anchor in front of him would use the gas diffusion method to separate uranium 235.

until they look down
In the factory, Han Yuan watched the barrage of these discussions with a smile and did not explain too much.

The gas diffusion method is indeed the way to extract uranium 235 from uranium hexafluoride.

This method takes advantage of the fact that the molecular masses of the uranium-235 isotope and uranium-238 are different, and the mass difference between the two is about one percent.

Although one percent sounds like a small number, it turns out that the difference is enough to separate them.

Uranium-235 and uranium-238 are separated by pressurizing UF[-] gas and passing it through a special porous membrane.

Molecules containing uranium-235 pass through the porous membrane a little faster because of their lower mass.

After passing through a porous diaphragm, the content of uranium 235 in the next layer of UF[-] gas will increase slightly.

In this way, uranium 235 and uranium 238 can be separated by continuously passing through the porous diaphragm, and uranium 235 can also be enriched.

Therefore, the "gas diffusion method" is the most mature method of refining uranium 235, and it is also the only method that can be commercialized.

It can be said that other methods such as gas centrifugation, distillation, electrolysis, and electromagnetic methods can only be carried out by gathering the strength of a country.

Of course, this approach also has its drawbacks.

The first is that it consumes a lot of power.

The second is that it takes a long time, usually four or five months.

Although this is very short compared to the two or three years it took to enrich uranium 235 by the "centrifugal method", four or five months is still too long for the Korean won.

Won is not planning to use the gas diffusion method to separate uranium-235 and uranium-238.

He made uranium hexafluoride just to turn uranium into a gas to facilitate the next step of the reaction.

(End of this chapter)