However, Chen Feng is not planning to build a protected building at the moment, because he has not yet proved whether this thing is iron ore or not.

I don't have much in my heart, but I just think this thing is very similar to the magnetite in my high school chemistry book.

If it weren't for the iron ore, wouldn't it be in vain?

But your time is still precious, okay?

Eighteen years, almost one-sixth of them have gone!

After the iron-making furnace was thoroughly air-dried and formed, what appeared in front of Chen Feng was a hard, cracked cylindrical blast furnace.

This blast furnace is very thick, and Chen Feng can use this blast furnace to do experiments to his heart's content.

"Whew~" (Go, bring me those two baskets of "clods"!)

After all, magnetite is actually very ugly, black and not slippery, with a little yellow metallic luster, in Cai Jianxing's eyes, it is indeed no different from clods.

Cai Jianxian's body has been smoked like an old bacon, and he still unswervingly implements the boss's orders.

"Whew. (Find a stone and smash all the "clods" of dirt.) ）

Many people have a misconception about magnetite, thinking that they are as hard as steel, but in fact, Chen Feng thinks they are not too hard.

It can be easily smashed with a stone.

There are many benefits to smashing into pellets, the biggest of which is that it allows them to be more exposed to the flame.

Chen Feng first asked Cai Jianxing to get about a bowl of granules, and then ordered Cai Jianxing to stop.

So many particles, enough to test the waters.

To be on the safe side, Chen Feng also asked Cai Jianxing to pinch another bowl made of clay and put the particles into the bowl.

Chen Feng ordered Cai Jianxing to put the bowl into the iron-making furnace, nervously waiting for the result.

The raging fire continued to burn in the iron-making furnace, and Chen Feng's heart also rose and fell with the flames.

The iron black was mixed with a hint of golden luster of magnet powder, which was burned red by the fire at this time, and even had a slight tendency to transform into liquid.

However, this is a small earth blast furnace after all, and it is unlikely that it will be fired into iron juice.

The main component of magnetite is ferric oxide, which accounts for about 68%, and the iron element of ironmaking is mainly derived from this.

The essence of ironmaking is to make the ferric oxide in the magnetite react with carbon monoxide at high temperatures.

As for carbon monoxide, it's simply inexhaustible, isn't it under your own furnace?

As long as the trees are not burned sufficiently, large amounts of carbon monoxide are produced.

Therefore, the branches that Chen Feng asked Cai Jianxing to get were all a little water, just to make it not burn sufficiently!

After half an hour or so, the fire gradually subsided.

It's just that the contents are still hot!

Chen Feng couldn't hold back the restlessness in his heart, so he ordered Cai Jianxing to break two branches, like chopsticks, and clip out the contents one by one.

It's almost the same as before, the purity has improved, but that's it.

Chen Feng couldn't help but be a little frustrated, he obviously did every step so perfectly, why didn't he succeed in the end?

If you can't raise the purity, it's useless!

What went wrong? Chen Feng couldn't help but be a little puzzled.

According to my own assumptions, my own steps should be able to directly separate iron and slag!

For two days in a row, Chen Feng looked frowning and contemplating, and even when he was eating meat, he was thinking carefully about the doorway.

Chen Feng asked Cai Health Care to do it a few more times, and the result was still the same.

He knew that there must be a mystery in it, because he knew very well that this thing was a real magnetite, and there was no reason why it couldn't be smelted.

As for why Chen Feng knew that this was magnetite, the reason was in one word: licking.

Chen Feng tried to lick the magnetite, and there was a smell of iron, there was no doubt that it was iron!

So he extracted the iron in it more and more, and kept imagining it in his mind.

A bowl of iron powder, poured into a small iron-making furnace, subjected to high temperature, when ferric oxide and carbon monoxide react, it is natural that the iron comes out.

But the reality is that slag and iron can't be separated!

Chen Feng kept recalling the chemistry knowledge in high school in his mind.

That equation is absolutely correct, Chen Feng has excellent grades in all subjects in high school, and chemistry is no exception.

What's more, this is not an extremely difficult chemical equation, so there is no reason to be wrong.

That's what detail I missed, it must be like this.

You have to think about the details.

In fact, the key lies in the slag, which is like constipation, and never wants to separate from the iron.

Melting point, chemical reaction!

These two words suddenly echoed from the depths of Chen Feng's mind, and then slowly enlarged little by little until they lingered.

This is obviously due to the high melting point of slag!

Chen Feng's memories came flooding back, and he remembered it.

Slag, due to its high melting point, cannot be separated from magnetite.

Clever chemists came up with a solution, fluxes!

The so-called flux is a class of chemical reagents that can be melted with the sample at high temperatures to convert the sample into compounds that can be dissolved in water or acid.

To put it simply, the flux can melt together with the slag, and chemically react with the slag, and finally become an independent substance, completely separated from the iron!

The flux used for ironmaking is generally limestone or dolomite, preferably dolomitized limestone, which has the best effect!

Chen Feng doesn't have dolomite here, but there is limestone!

Chen Feng saw the limestone before, and he didn't care too much, he couldn't eat or drink, it didn't seem to be of much use.

But now it's useful!

Chen Feng jumped up happily, and the pleasure of finally solving a problem after thinking hard about it was something that the scumbags couldn't experience at all.

Now, he has finally solved this puzzle!

"Whew~" (Great health care, hurry up to Xiong Blind Mountain, and get some white stones from the mountain behind you!)

Cai Jianxing saw that the boss was no longer troubled and his mood had improved, so he was naturally happy.

hurriedly rushed over like oil on the soles of his feet.

Twenty minutes later, Cai Jianxing walked over with a slightly sturdy black baby.

This black baby is the guy who threw the javelin very accurately before.

Chen Feng also recognized this guy, and asked Cai Jianxing to train him well, after all, he was a ...... Monkeys.

I didn't expect this guy to bring the black baby over, and he was lazy enough.

I have to say that Cai Jianxian, a monkey, is really a monkey spirit, and he is very good at using the mood of the leader to do things.

When the leader is in a bad mood, he should try to keep a low profile, do anything obediently, and don't play tricks, otherwise the leader will be more angry and his end will be worse.

When the leader is in a good mood, you can let go of yourself a little, and at this time, if you are a little cheating, the leader will turn a blind eye and not see you in general.

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