"Tsk, fortunately they made a good record and kept the sample, otherwise it would have been a big loss!"

Looking at the small book in front of him, Li Yuanjia quickly realized the fact that he may have neglected the treasure he had all along!

These recipes, those alloy blocks that are stored in warehouses.

Yes, they are works that have been eliminated and are not very suitable for making alloy movable type, the main reason is that the adsorption with the ink is not good, and it is difficult to print in large quantities.

But just because that's not that doesn't mean they're useless.

What if they were very hard and very tough? Used to build a horizontal knife, will it be a magic weapon of this era? If they were lighter and used to make armor, would they become heirlooms for some generals? The kind of thousands of pairs?

Anyway, as long as he thought about these possibilities, Li Yuanjia's heart was a little restless.

And then......

In the restlessness of his heart, Li Yuanjia suddenly remembered an idea that he had thought about many times before, but had never really put into practice: "In this case, in fact...... Is it really possible to let them study ironmaking or steelmaking technology? ”

Thinking of this, Li Yuanjia couldn't help but take a deep breath, and his expression instantly became serious.

Steel!

Unless it is the time of the 21st century, no matter what era it is, this thing must be a strategic material, and one of the criteria for the strength of a country. A country with high steel production does not necessarily beat a country with low steel production, such as the Song Dynasty, which always gives people a feeling of "weakness", but there is no doubt that steel production can definitely represent the wealth of a country.

As a traverser, Li Yuanjia has certainly thought about this thing, and more than once!

Although he is a medical student among science students, he doesn't know anything about the so-called ironmaking and steelmaking, but he has also been to station B and has seen a lot of so-called folk versions of "survival in the wilderness", and he is no stranger to the ancient ironmaking technology - paste a "blast furnace" with mud, burn those smashed iron ore with charcoal, and finally dismantle it to get an iron block that doesn't look like iron at all......

It's simple, but at least let Li Yuanjia know this method.

Of course, just knowing this method doesn't make much sense, after all, the ancestors already had similar techniques in the Han Dynasty, and after so many years of improvement, it can be regarded as very mature, anyway, Li Yuanjia, who is a layman, can't put forward any suggestions for improvement.

And for him, he has never really explored the specific principles or techniques in detail.

After all, Li Yuanjia only watched the videos for fun, especially those crossings, who would really explore how those technologies were done? So unless it's something like a quyuan plough or a table and chair, Li Yuanjia is familiar enough to draw sketches, or things like glass and thirteen incense, he knows the simple principle, and can make people try countless times, otherwise Li Yuanjia wants to make something slightly more technical, and the difficulty is not ordinary.

As for improving steelmaking technology or something, unless he is willing to invest enough time and energy, it is also a fantasy.

But even if you don't know how to make iron and steel, because of the videos and historical networks you have watched, at least Li Yuanjia knows one fact, that is, a very important milestone in the history of steelmaking - the use of coke!

The use of a large amount of coke can make the temperature of steelmaking rise.

Temperature is very important for steelmaking, because the melting point of iron exceeds 1,500 degrees, and only pig iron, which is rich in impurities, can be melted into molten iron under the action of firewood or charcoal because of the reduced melting point, but real wrought iron cannot be melted at this temperature at all......

It's a pity that even if he knows this, Li Yuanjia still has a headache.

What if you know the importance of coke?

Let's not talk about how to use this coke in ironmaking and steelmaking, Li Yuanjia is completely confused, just the pitiful output of coke now, basically useless!

Although coke has been made out by Li Yuanjia, the technology is rough, the process is backward, the output of coke is low, and the quality does not seem to be good, but the cost is terrible...... Anyway, in Li Yuanjia's opinion, if the coke thing wants to be used in iron and steelmaking, it is estimated that it will take a few years for them to improve it.

Otherwise, even if the effect is good, it doesn't make sense if the cost is too high.

"Alas......"

Thinking about it, Li Yuanjia let out another long sigh, scratched his head with a wry smile: "To put it bluntly, I can only find two or three people, and slowly play by myself." If you really do it lavishly, even if there is still a lot of money in the small treasury of Han Wangfu, I'm afraid it won't be able to withstand the toss! ”

A glass workshop before has made Li Yuanjia understand the cost of R&D in this era.

It is true that they didn't spend too much money, but for the method Li Yuanjia said, Han Cheng and the others built seven or eight sets of equipment before and after, bought countless mineral materials, and didn't know how much charcoal and coke they used. If none of these things are cheap, it can be said that the glass was smashed out by Li Yuanjia with money!

So when he was pricing the glass, he only gritted his teeth and nailed a hundred pieces!

The production of this thing is very low now, and when will it be able to recover the cost if it is sold less? Not to mention that the quality of the glass is not good now, the texture is too brittle, and the transparency is only barely enough, and it must be constantly invested in money and manpower to improve. If Li Yuanjia doesn't get more from those rich people who want to try it, won't he have to fold it in?

Glass is like this, and iron and steel are probably not much better.

So thinking about it, Li Yuanjia's ambition that had just risen was extinguished by a basin of cold water, and he shook his head and pondered: "Forget it, let's pull it from these things that have been made first, and see if there are any good things." As for the so-called iron-making and steel-making technology...... Well, go back and tell the second child, if he allows, find two people, and give them a few hundred times a year to play slowly. ”

The reason why Li Yuanjia didn't touch it before was because steel was too sensitive, and as a prince, he needed to avoid suspicion. It's not that Li Shimin will do what he does if he really does it, but in Li Yuanjia's position, he hopes to erase all potential risk factors.

After all, this is a feudal dynasty, after all, the tragic experience of the eldest nephew Li Ke in the future Li Yuanjia remembers it clearly.

If you want to play with steel, even if it is experimental, Li Yuanjia will talk to Li Shimin first.

As for the candidate for the manager of the ironmaking workshop in the future, he soon had a choice: "It happens that the group of people that Ma Liang is teaching will graduate next year, and two of them will be selected from among them, and let them study with the blacksmiths in the house for a year before ......."