Hand rubbing nuclear fusion live in the wilderness

Chapter 144 Making Thermometers
In the simulation space, the genius was dimly lit. Han Yuan started the live broadcast, greeted the audience who came in, and walked towards the nitrate solution prepared yesterday.

After a night of standing still, the somewhat cloudy nitrate solution in the large wooden barrel has been clarified a lot, but there are some impurities floating on the surface.

Han Yuan took a ladle to clean up the floating impurities, then found a small wooden bucket, and gradually transferred the clear nitrate solution to the concrete stone stove that had already been set up next to it.

The bonfire in the stone stove started to raise the temperature of the solution on the stove slowly.

While burning the fire, Han Yuan said: "This method of steaming and cooking nitrate appeared very early, and it is very ancient."

"The principle is the same as that of refining table salt. The solution is first extracted, then filtered and purified, and finally the water is boiled to obtain the required substances."

"However, the salt or nitrate extracted by this method is not pure, and contains a lot of impurities, which need to be processed later."

In the stone stove, the firewood was blazing, and a spark was blown out from time to time, and the nitrate solution in the pot on the stove began to evaporate as the temperature rose.

The solution in the pot decreased little by little, and the originally clear solution became cloudy and viscous again.

The smell that emanates is also more intense and stimulating.

In the end, Han Yuan couldn't bear the smell a little bit, covered his nose and hid in the upper wind:

"It's not that I said, ordinary people really can't do this. The smell is more irritating than roasted durian. It makes me tear up."

Hearing this, the audience in the live broadcast room complained one after another.

【? ? ? ? ? 】

[He is roasted durian, you are boiled shit, how can the taste compare? 】

[I think the roasted durian is delicious, soft and delicate, and the taste is really good, but the smell is really a bit. . . . 】

[How did the host and the host know what roasted durian tastes like?These are people with stories. 】

【What does roasted durian taste like?Just ask if you don’t understand? 】

[Why don't you try live streaming upstairs? 】

[I can crowdfund one dollar (dog head)]

Looking at the barrage in the live broadcast room, Han Yuan smiled. He had done roasting durians once before.

But at that time, I was young and ignorant, thinking that roasted durian was no different from roasted sweet potato, and it turned out to be cheating.

After a while, Han Yuan checked the nitrate solution boiled in the pot again.

Under continuous heating, the water in the pot has almost evaporated, and the remaining solution is like fried sugar-colored syrup, extremely viscous and constantly bubbling.

There are also yellowish-white crystals precipitated on the side of the pot.

Seeing this, Han Yuan pulled out all the firewood in the stove, allowing the remaining slurry to condense naturally.

After cooling, he shoveled out a piece of the precipitated nitrate crystals.

Under the lens, this nitrate crystal appears as an irregular block, with a cloudy color and a yellowish color.

"This is the extracted nitrate crystal, and the main ingredient in it is potassium nitrate, also known as soil nitrate."

"However, it is not pure, and it contains impurities such as sodium nitrate, which needs to be further processed."

Showing the turbid crystals in his hand, Han Yuan found a ceramic, scooped out all the nitrate in the pot, put it into the ceramic and crushed it.

Then add clean water and rethaw.

Melt and filter again with gauze.

The filtered solution is much clearer and clean, but still exudes a pungent smell.

Won sifted a handful of fine ash from the embers of an old campfire, sprinkled it into pottery, and stirred it with a resin stick.

While stirring, he explained: "Although most of the nitrate crystals that were dissolved and boiled for the first time were potassium nitrate, there were also quite a few other impurities."

"So it needs to be purified to remove impurities."

"The key to purifying potassium nitrate is the plant ash I just sprinkled in."

"The composition of plant ash was mentioned last time. After stirring and mixing, and then filtering, purifying and boiling, we can get Glauber's salt with a high purity."

"Grabilite is fire nitrate, and its chemical composition is potassium nitrate."

"In ancient times, thenardite was the main ingredient in the preparation of black powder, because compared with saltpeter, thenardite is not easy to absorb water and deliquescence in the air."

"However, the function of my refining Glauber's salt is to make ice cubes, not to make gunpowder."

"Just take a look, everyone knows what you know, don't make it yourself, because potassium nitrate is poisonous, and inhaling too much can cause death."

【understood! 】

【I understand too! 】

[Good guy, I call him good guy. 】

[Ice making is interesting, but it's still exciting with black powder. The anchor will perform it quickly. 】

【So dangerous?Poisonous?Will it explode?Reported! 】

【? ? ? ? ? 】

[Your mother upstairs is gone, why don't you go back to the grave? 】

[Don't talk nonsense, potassium nitrate is just a fertilizer, everyone knows what to make gunpowder, and I don't know what else is needed, let's say yes. 】

The nitrate solution purified by plant ash was re-cooked, and finally about [-] grams of pure potassium nitrate was obtained.

Won estimated that if all the nitrate solution in the large wooden barrel was purified, about ten catties of potassium nitrate could be obtained.

Compared with the naturally formed nitrate ore, the shipment rate is not very high, not even one-tenth.

But ten catties of potassium nitrate is enough for him.

After a busy day, Han Yuan extracted all the potassium nitrate, and finally weighed it, about ten catties.

Potassium nitrate is manufactured, and all that remains is to get the thermometer out.

Mercury thermometer won't be able to manufacture for the time being, but there are still substitutes.

Use red plants to grind some pigments, and then add alcohol or kerosene to replace mercury.

The principle is actually very simple, that is, ordinary thermal expansion and cold contraction.

The difficulty lies in how to make the glass into a long and thin hollow glass tube.

Because the thermometer is just a glass tube with a very thin inner diameter of the solution.

The smaller the inner diameter, the faster the solution inside will rise when heated, so the measurement will be more accurate.

The larger the inner diameter, the slower the rising speed and distance of the solution inside, and the measurement results will naturally be inaccurate.

(End of this chapter)