Three Kingdoms, at the beginning of the game, recognize the thief as the father, hit the spectacle,

In the early days of China, and even the whole world, the price of ironware was more expensive than copperware, which is why.

As for another method of industrial iron smelting, it is naturally well-known, and 90.00% of people above 90.00 have heard of it, but [-]% of people over [-] have never seen the blast furnace ironmaking method.

Just like what Huan Kuan said in the Han Dynasty: If there is no work, there will be no agricultural use. The output of industrial products affects the production and operation of society in all aspects.

If the capacity of industrial production is limited, even if this society has very advanced ideas, it still cannot meet people's most basic survival needs.

As one of the symbols of industrialization, the blast furnace ironmaking method has brought into full play the advantages of industrialization, which is cheap, large bowls, and large quantities of food on site.

Compared with the complicated direct reduction smelting method, blast furnace ironmaking is more dangerous. Once a worker falls into the blast furnace, there is no chance of rescue, and he will be mixed with the slag, even if it is avoided. All kinds of threats, and the strong smoke emitted from the top of the blast furnace will also severely damage the health of workers, which can be said to be very harmful.

Even in terms of the quality of the products produced, because the production process of blast furnace ironmaking is not refined enough, it can only produce low-quality pig iron with high carbon content, but cannot produce low-carbon steel and wrought iron. Industrial raw materials with higher quality and better toughness.

It's just that, after decades of development, blast furnace ironmaking has still defeated the old ironmaking method and has become the world's mainstream steel production method.

Among them, the continuous development of productivity requirements and blast furnace construction technology are of course the greatest contribution, and played a very important role in the process of blast furnace ironmaking seizing the global market.

In addition, the most important thing is the production method of producing steel like flowing water, and the gold content of the blast furnace ironmaking method as the world's first technology that can substantially improve the production of steel.

Different from the simple smelting method, blast furnace ironmaking only needs to place iron ore particles in the middle and upper part of the blast furnace, and then the position where the coal is filled in the bottom is continuously fed with high-temperature air, and the air that is fed in will quickly It will react with coal to generate a large amount of reducing gases, namely carbon monoxide and hydrogen.

Subsequently, under high temperature conditions, these carbon monoxide and hydrogen react with the oxides in the iron ore, so that the iron ore particles are reduced into a thick iron and steel slurry, while the impurities are absorbed by the limestone in the adsorbed ore to form cinder, and the remaining Exhaust gas is discharged continuously from the top of the blast furnace.

It won't take too long for a whole furnace of ore to be smelted into molten iron, which will then be released from a special spout.

In this way, pig iron will be continuously produced from the blast furnace.

With the blessing of such huge productivity, the blast furnace ironmaking method with relatively simple process, large output, high labor productivity and low energy consumption still dominates the world, accounting for more than 90.00% of the world's pig iron production, so it is not surprising.

Chapter 42 Völklingen Ironworks

In fact, most of the current iron smelting methods in the Han Dynasty are still based on the direct reduction smelting method.Although the output is very low, thanks to the hard work of a large number of blacksmiths, most of the Han army has weapons made of steel, at least weapons made of wrought iron.

Even though the output in the same period was not very high, compared with Western civilization in the same period, Dahan's current metal output is already quite high, and it can earn the first and second level with Persia in its heyday.

In addition, in addition to the common small family workshops—that is, blacksmith shops, some people began to use the shaft furnace method for slightly higher output.

Compared with the blast furnace method, this method can only say that the quality and production efficiency are not bad, but compared with the output of a single furnace, the shaft furnace method is still far inferior, and can only be regarded as an elite demo of the blast furnace method.

The reason why Zhang Yan was so excited about the emergence of this technology, and he didn't even control his emotions at the first time, is that the main reason is that iron has many uses. In the past, it might be because of the production volume that iron was not considered as a commodity in the civilian field. It is too common, at most it is only the key position of some farm tools, but when the output is high, steel can actually be used to produce many things.

For example, the "Chinese Iron Pot", which appeared in the Han Dynasty, gradually took shape in the Sui and Tang Dynasties, and was carried forward in the Northern Song Dynasty, gradually entered the daily life of ordinary people in China after the increase in steel production.

Before that, most people at the bottom had only two options for their diet, either barbecue or stew.

At the same time, as for the staple food, due to the general heat resistance of clay pots, few people use pottery to cook rice, but mostly use bamboo drawers to steam rice.

As long as China's pig iron production really develops in the hands of Zhang Yan, it doesn't even matter how good the quality of this iron is, it's just to make the people eat better, and at the same time make the production cost of ordinary armor lower. It is enough for Zhang Yan to enter the countless history books of later generations.

Or it may be recorded in some books by later generations, and it is not impossible to hide it in the library where he is now.

……

"Well, after building several blast furnaces in Lujiang, I will be able to promote a large number of ironware...Iron armor and iron pots can also be sold as trade goods to other places. They are all valuable things."

After thinking about it secretly, Zhang Yan, who knows the important role of special commodities in long-distance trade, can't help but think about the good economic situation of Lujiang in the future.

What made him even more itchy was that although the method of blast furnace ironmaking was called ironmaking, it was actually a general method of metallurgy.

As long as the ore composition is mostly oxide-based metals, it can be smelted by the blast furnace method.

Even copper, which is extremely scarce in Lujiang, or is in great demand, can be smelted in a blast furnace.

As we all know, copper ore is often mixed with some iron ore impurities at the same time, so in the modern metal smelting process, copper ore is generally not smelted by blast furnace ironmaking.

In addition, the melting point of copper is lower, and the difficulty of smelting is relatively small. For the modern metal smelting industry, there is no need to use the blast furnace method for smelting.

It's just that these statements are all aimed at the kind of productivity that has developed to a very high level in later generations.

In the era of extreme lack of productivity in the Eastern Han Dynasty, blast furnace smelting may not be an impossible way to increase copper production on a large scale.

As for the disadvantages of those blast furnace copper smelting, just wait until the productivity and chemical industry develop in the future, and then gradually carry out iterative replacement.

In the Han Dynasty 2000 years ago, this may not have been an absolute breakthrough in copper production capacity.

At the same time, Zhang Yan didn't make it too obvious, but he was secretly looking forward to another thing in his heart, that is, if this thing is really realized, then in the future, Lujiang can not cast bronze cannons, but can Cast Iron Cannon?

Yes, yes, of course he knows that iron cannons need to use clay molds. Before the production technology is up to standard, clay mold casting cannons are prone to defective products such as trachoma, which will affect the quality and reliability of the artillery... But even so, the production of a Of the five cannons, one or two can always be used, right?

He has more iron mines in Lujiang than copper mines!

It was as if he was deliberately provoking Zhang Yan. You must know that he had already made a plan. He wanted to find a chance to call Ma Jun and Kuai Qi after he went back today, and see where in Lujiang to shoot a Lujiang Iron and Steel Plant first. Go on and build this kind of blast furnace on the land of Huaxia first.

But before he had time to get up, the system prompt popped up suddenly, making Zhang Yan feel stagnant.

[Friendly reminder: The ironmaking blast furnace is part of the epic spectacle "Megastructure: Völklingen Ironworks" in the system mall]

[When the host concentrates on building more than three blast furnaces on the current plot, the wonder can be opened for free: the task of building the Volklingen Iron Works, and some blueprints can be obtained for free]

To be honest, this is a somewhat abrupt reminder, and it has a strong sense of inducement in it.

However, after seeing the words "free", Zhang Yan still inevitably moved a little bit.

"Volklingen Iron Works... I am familiar with this one. Isn't it the steel plant built in Germany at the end of the [-]th century? It is said to be the first relatively low-pollution comprehensive complex in the world that has mastered gas purification technology. Ironworks."

"Anyway, things like iron and steel are still idle. If we produce more, we should be able to use them for railway laying and shipbuilding in the future..."

"Why don't we build more, and try to build his three blast furnaces first?"

The whole body froze in mid-air, and Zhang Yan suddenly became entangled in the number of blast furnaces to be built.

You must know that this thing must be built, but if it is built too much, the construction tasks of Lujiang River are already very tight, and it is likely to take up more manpower.

After all, even his Marquis Mansion has only just been completed.

And after a while, Zhang Yan came back to his senses until a servant quietly walked up to him and called him softly. After whispering a few words with the servant, he quickly walked towards the side of his mansion. in the past.

"Hey, let's just have three. As long as we can speed up the development and construction of Lujiang, it's not impossible to hold on to it."

In mid-air, Zhang Yan's voice slowly dissipated.

In a place he didn't notice, a rather young scholar, who looked about ten years younger than him, was well-dressed and walked towards the second floor of the library step by step.

Zhang Yan was in a hurry to get back home, but he didn't want to happen to pass by a Lujiang local scholar whom he had always been curious about, but because of embarrassment, he hadn't taken the initiative to contact him.

And the name of that scholar, in the entire Jiangdong area, is called Zhou Yu, Zhou Gongjin, the most famous and beautiful Zhou Lang.

……

"Hehe, I really didn't expect that although this library looks weird from the outside and smells like a barbarian, there is still some charm inside."

"I passed the lobby of the library just now. After a rough look, there are at least two hundred books on each shelf, and there are hundreds of bookshelves in the entire hall, but the eunuch did not lie. , something interesting."

"The environment in this room is quiet and suitable for reading, and there are many books in the hall that even I have never read. This is a good opportunity..."

……

Whispering a few words in his heart, Zhou Yu was dressed in a clean blue robe at the moment, holding two new books he had just fetched in his hands, looking relaxed and somewhat surprised.

He had doubts about whether this big library really contained thousands of volumes, but when he really entered and experienced the magnificence of it, all the doubts in his heart had turned into a deep sense of admiration. At the same time, I am also full of curiosity about Zhang Yan, the initiator of this large library.

"Hey, this location is good, with plenty of light and a breeze, it's just right!"

He happily chose a corner by the window to sit down, but Zhou Yu didn't know that the place he was sitting at the moment was exactly a table away from Zhang Yan's previous seat.

Chapter 43 Fated Encounter Bushi

Since today is the opening day of the Lujiang Great Library, Zhou Yu, one of the leaders of local scholars in Lujiang, will naturally be there.

He had been wandering around Wancheng for many days, and he was waiting here just to see the situation inside the big library. Therefore, when the big library was just announced to be opened by Zhang Yan, he was one of the first to enter. The scholars here were overwhelmed by the amount of books in the hall that was like a sea of ​​clouds, and they were a little overwhelmed.

But fortunately, no matter how you say it, his Zhou family is not those small families. As a descendant of the Zhou family in Lujiang, he has read poetry and books since he was a child, so he didn't stay in a daze for too long, and soon recovered. Make a fool of yourself in front of everyone.

It's just pity for those scholars and celebrities who entered this place with him, but they were quickly submerged in the sea of ​​books, and there was no room for a trace of peace in their minds for a long time.

While the scholars were greedily looking at the books in the hall, Zhou Yu had already selected a few books that he hadn't read but were more interested in, and walked up to the second floor early, planning to take advantage of the time when he was not busy. , Roughly glanced over.

To be honest, after entering the interior of the big library this time and seeing this vast book, Zhou Yu has put away his previous contempt for Zhang Yan.

On the contrary, when he no longer doubted the authenticity of the other party's words, but found that the other party really did what he said, all the speculation and doubts before turned into respect, and at the same time, he couldn't help but feel the evaluation of Zhang Yan in his heart. A rising tide lifts all boats.

For example, right now, he plans to wait until after the Chinese New Year this year to return to Wancheng, visit the other party properly, and talk about his ambitions with the other party.

Time passed quickly, and amidst the constant reading, the sky soon ceased to be as bright as before, and the noon sun began to slant.

At this moment in the library, many people who were not too cold to read have tasted the novelty in the large crowd before, and they have already returned home to take a nap.

Of course, there are also some stubborn children who are not willing to sit at the same table with those poor families despite their aristocratic status, and plan to try again after a while when there are fewer people.

As for the rest, they found a place quietly, quietly savoring the true meaning contained in the dossier in their hands.

Zhou Yu was naturally among this group of people.

It's just that several hours have passed since the opening of the library, so although Zhou Yu still can't let go of the books in his hands, he is a little hungry, so he can only tidy up his appearance and read some of the books in his hands. The book was stuffed back into the bookshelf, and he went downstairs to leave here first.

This is what should be seen, and what should be confirmed has also been confirmed.That being the case, then Zhou Yu will also set off, planning to go back to his hometown Shu County for the New Year.

If his guess is correct, although few of his uncle Zhou Zhong and the big members of the Zhou family appeared here, they must have heard and knew about the opening of the large library in Wancheng. thing.

Especially his uncle Zhou Zhong, despite his rigid and old-fashioned appearance, he is quite shrewd.

Such a big thing happened in the territory of Lujiang, even if this is the biggest partner of the Zhou family—and also the headquarters of the biggest competitor, the Qiao family, it is absolutely impossible for them not to get any news.

And he, as one of the few big library "opening players" of the Zhou family, who directly entered the library, his inner feelings must be completely different from those of people who heard the news.

Going back this time, he can discuss with his uncle how this matter will affect the future situation of Lujiang, and at the same time study how he can do it, so as to maximize the influence of the Zhou family in Lujiang and even Jiangdong. to strive for maximum benefit.

The leather boots landed lightly on the stone floor, Zhou Yu quickly went downstairs like this, and then prepared to leave here.

He is not only a native of Lujiang, but also a descendant of an aristocratic family. The aristocratic Zhou family he belongs to has donated a lot of books to the big library. Naturally, he can borrow a book or two and read it when he has nothing to do when he returns to his hometown. of.

According to the staff member, as long as he doesn't take these books out of Lujiang territory and returns them within a month, the Lujiang library won't trouble him.

And in just a few minutes, he had already figured out which books to take away.

A music book that has never been seen before seems to be an isolated copy obtained by a northern aristocratic family from a barbarian, and Zhang Yan ordered it to be reproduced.

A ghost story novel, which seems to be about folk ghosts and gods. Although Zhou Yu doesn't believe in it, he can use it to relieve boredom on the way home.

There is also "Sun Tzu's Art of War", which is a book that Zhou Yu has been looking for for a long time but has not found.

As a well-known strategic master during the Three Kingdoms period, the scene of Zhou Yu ordering troops is still fresh in the memory of many people even now.As a master strategist, being able to read the posthumous works of the ancient soldier saint Sun Wu, and have a deep friendship with the other party spanning nearly a thousand years, no matter how it looks, it is a very yearning thing for him.

Similarly, this book is also the most cherished one among all the books he has seen today. He just flipped through it before and planned to take it back to his hometown and review it again and again.