There is a saying that 'a word wakes up the person in the dream'" Li Su's words that seemed to be joking listened to the ears of Jiao Zhushi, but it was like a thunderbolt, blasting a gap in his already fixed thinking, coupled with Li Su's metaphor is very vivid, so he immediately grasped the key and said excitedly: "Your Highness, do you mean that you can heat this air and then blow it into the furnace?" ”

"Hehe, Master Jiao is really experienced, and he has grasped the key point at once!" Li Su praised that air preheating is actually a layer of window paper, and everyone understands the truth, but no one has ever thought of doing this, mainly because the experience of their predecessors limits their thinking.

Li Su stepped forward and walked to the side of the water row, stretched out his hand and gestured on the ground: "Uncle and Master Jiao, please see, you can build a pre-Chapter 89 iron-smelting and steelmaking (below) hot chamber here, and blow the air into the furnace after heating, so that the temperature in the furnace will not be reduced due to cold air, and the higher the furnace temperature, the iron in the iron ore can also be smelted as soon as possible, which not only saves time, but also the quality of the iron smelting is much stronger than before." ”

Duan Lun, as the secretary of the Ministry of Industry, still knows some about the art of iron smelting, so he can also understand Li Su's words, but as an official who coordinates the overall situation, he heard an inappropriate thing from Li Su's words, and asked at the moment: "Liulang, I understand what you said about this preheating chamber, but have you thought about it, this preheating chamber also consumes fuel, although the quality of smelting iron is good, but the cost has also increased, will this be a little cost-effective?" ”

Hearing Duan Lun's question, Director Jiao, who was excited, preemptively said: "Lord Shangshu, increasing the preheating chamber will not increase the cost, because after the furnace temperature is increased, the smelting time will be shortened, so that the amount of fuel can be reduced during smelting, and the fuel saved can just be used to heat the air." ”

"Huh~, wonderful! This was my negligence! Duan Lun heard Jiao's explanation. At the moment, his eyes lit up, and at the same time, he admired Li Su's talent even more Chapter 89 Iron Smelting and Steelmaking (Xia) Land, and after a short while, they made a small change to the blast furnace, which suddenly made the quality of the blast furnace iron-making increase, and it could also speed up the time for the furnace to produce iron. Don't underestimate this little improvement, there are countless iron-making furnaces in Datang, if each furnace is changed according to what Li Su said, then not only will the annual iron output increase a lot. And the quality of iron can also be raised to a higher level, which is a great feat!

"Rokuro, everyone says that you have God's guidance, but I didn't believe it at first. When I saw it today, I realized that those rumors are simply not exaggerated to you! Duan Lun thought that he had achieved such a great political achievement out of thin air, and under the excitement in his heart, he couldn't care about any manners anymore, and stepped forward to pat Li Su's shoulder and praise loudly.

"Where, uncle, you praise the little nephew too much!" Li Su hurriedly said modestly, but he couldn't hide the smugness on his face, especially when he saw that Jiao's eyes were even more admiring of him, as if he had seen a pile of gold and silver treasures. I can't wait to snatch it and hold it in my arms and kiss the two.

The craftsmen are all action-oriented, and Director Jiao immediately summoned several major craftsmen over, and the method of the preheating room immediately caused these people to be shocked, and the eyes that looked at Li Su were the same as those of Director Jiao.

These people are experts, and Li Su is also there. So everyone said a word, and soon got the detailed plan of this preheating chamber, and some of them proposed that when the preheating chamber is heated, the fuel and air are separated. This requires very little fuel, and there is no need to use the saved coke at all, and it is possible to use cheaper coal as fuel. In this way, although a preheating chamber is added, it can actually save a lot of fuel costs, and it will definitely reduce the cost of a furnace of iron.

As soon as this proposal came out, it immediately attracted the appreciation of Li Su, Director Jiao and others, and even Duan Lun, who was dozing off on the side, applauded loudly, don't look at the Ministry of Industry can get a lot of money every year, but there are more places to spend money, so as long as he, the secretary of the Ministry of Industry, hears that he can save money, he will immediately become a hundred times more energetic.

As soon as the plan of the preheating room was completed, Director Jiao originally wanted to do it in person immediately, but Li Su stopped him and those craftsmen, and the transformation of the blast furnace was just a small move by Li Su Liwei, and he mainly wanted to organize these craftsmen and help him get the steel filling method together. After all, all that comes out of the blast furnace is pig iron, but how to turn pig iron into steel? That's the most troublesome step.

Datang's steelmaking is still fried steel, the so-called fried steel, in fact, is to melt the pig iron, and then keep stirring, as if stir-frying, so that the oxygen in the air and the impurities and charcoal in the pig iron can react, so that the carbon content in the iron is reduced, but most of the steel frying method is wrought iron and low carbon steel, if you master it well, you can also get some more widely used medium carbon steel and high carbon steel.

Li Su wants to engage in a further steel filling method, although whether it is the steel frying method or the steel filling method, Li Su only knows a rough idea, after all, he has not specifically learned this knowledge, but has only seen the introduction of this aspect from some miscellaneous books or the Internet. However, even if he knows little about steelmaking, Li Su is completely sure to get the steel filling method out, after all, he is very clear about the essence of steel. To put it bluntly, isn't the so-called steel iron with a carbon content within a certain range?

If you want Jiao to help them get the steel filling method out, Li Su has to let them understand the difference between steel and iron first, so Li Su had to make a cameo appearance as a chemistry teacher for the time being, and try to explain it in easy-to-understand language. Of course, Li Su was not stupid enough to talk about atoms and molecules, but just told them that this iron contains many impurities, and of course they know about this Jiao, and then Li Su said that one of these impurities is very special, and its content will affect the properties of iron.

Everyone understood this, and then Li Su talked about the principle of the steel-filling method, although the steel-filling method was available in the late Han Dynasty, but it was not until the Song Dynasty that it began to be used on a large scale, so in the early Tang Dynasty, people who knew this steel-making method were extremely rare. In fact, the so-called steel filling method is to mix pig iron and wrought iron together, as long as the ratio is correct, the steel will come out. Of course, the steel filling method is certainly not as simple as Li Yi imagined, but the principle is not wrong, as long as you spend some energy and time studying it in this direction. It can definitely get the steel filling method out.

After listening to Li Su's steel filling method, Jiao and a group of craftsmen fell into deep thought, for Li Su's explanation, they also understood, if someone else talked about the difference between steel in front of them, they must have scoffed, after all, when it comes to the understanding of steel, they have played iron all their lives, but no one is convinced. However, Li Su's opinion on the preheating chamber just now. It has made them have a kind of awe for Li Su, a different prince, and now after listening carefully to Li Su's explanation, and then confirming his understanding of the nature of steel, he found that he only knew what it was before. And where I don't know why, if we use the theory of Li Su to explain it, it will all suddenly be unblocked.

Director Jiao discussed quietly with the craftsmen around him for a while, and then stood up and reported: "Your Highness, the subordinates have all understood the steel filling method you mentioned, although in practice, some problems may be encountered, but it is not without solutions. If we are given a period of time to study, we are sure that this method will be worked out! ”

"Good!" As soon as Li Su heard that there was a door, he was immediately overjoyed, and reached out and patted Director Jiao twice on the shoulder, "Director Jiao, if you can get this steel filling method out." It will definitely increase Datang's steel output several times, and you, as the main participants in this matter, will definitely be famous in the history of Datang! ”

"Not bad! You've all given me the audacity to do it, come to me when you need anything, and you'll put aside everything else you're doing in the meantime. Make every effort to get this steel filling method out. Duan Lun also stood up and said at this time, but the expression on his face was a little strange, and his face was red and didn't look like excitement. On the contrary, it makes people feel a little breathless.

Seeing that even Lord Shangshu also fully supported the implementation of this steel filling method, Director Jiao no longer had any worries, and immediately said: "Lord Xie Shangshu supports, and his subordinates will go all out to study the steel filling method as soon as possible!" "Although Li Su is the prince, after all, he can't control Jiao's affairs, Duan Lun is the boss of the family, so here, Duan Lun's words are more effective.

After all, when it comes to the actual operation of iron smelting and steelmaking, he and Jiao are far behind, so as soon as the theoretical knowledge is finished, Li Su and Duan Lun will no longer bother these craftsmen who have begun to take action, and leave this big workshop together.

While walking on the road, Duan Lun snorted angrily and said, "Liulang, you kid is really slippery, this is what you said to help us improve the technology of iron smelting and steelmaking?" ”

"Huh? Uncle, isn't a preheating chamber and a steel-filling method enough? This is a good thing that can double Datang's steel production a few times! Li Su blinked his eyes and replied very innocently.

"! Although the preheating chamber is a good way, but your steel filling method is purely a painting cake, and you only know a rough idea, and then talk to the craftsmen, let them study it themselves, whether they can study it for the time being, but it must cost a lot of manpower and material resources, which are all out of our Ministry of Industry's pocket. Seeing Li Su's scoundrel appearance, even Duan Lun, a well-mannered person, couldn't help but be rude, when Li Su asked him for help, he blew himself like an expert, as if as long as he came out, he could get everything done immediately, but who knew that in the end, Li Su only pointed to a general direction, as for the specific process, it was up to the craftsmen under him to study it themselves, and the cost had to be reimbursed by his book, how could he not be angry?

"Uncle, you can't say that, my steel filling method is genuine, if there is no guidance from me today, if they only let them study it themselves, it is estimated that it will be difficult to study it even if it is a hundred years!" Li Su said very justly, in fact, his words are obviously a bit bragging, the steel filling method appeared as early as the end of the Han Dynasty, but the people who know it in Datang are extremely rare.

"Hmph~" Seeing the dignified King Liang playing a scoundrel in front of him, Duan Lun was Li Su's uncle, but there was nothing he could do about him, so in the end he could only snort coldly, turned his head to the side, and no longer looked at this scoundrel boy.

Seeing that Duan Lun seemed to be a little angry, Li Su was also a little worried, he would have more places to use Duan Lun in the future, and it would not be cost-effective if the relationship was stiffened because of this trivial matter. So Li Su thought about it, and suddenly had an idea, and pulled Duan Lun's sleeve with a flattering face, making him turn his face, and then said: "Hehe, uncle, it's my nephew's fault this time, otherwise, I'll take something new out again, this time I promise, I will never fool you with semi-finished products like the steel filling method again!" ”

"Hmph, you kid is so generous?" Duan Lun was still a little skeptical about Li Su's character.

"Of course, and this thing is also related to farming, you also know that I am the most important agricultural in the Tang Dynasty, and even my father and emperor personally went to the field, as long as I take out that thing, and then it will be presented by your Ministry of Industry, if it is promoted in the future, uncle, as the main promoter, you will definitely be famous in the history of the Tang Dynasty." Li Su began to flicker again, and the last sentence he had already said to the main matter of Jiao just now, and he didn't even change a word.

"Hehe, even if your stuff is praised to the sky this time, I won't believe it, unless you take out the real thing!" Duan Lun is also a smart person, and he will never fall twice in the same place.

"Isn't it just a real thing, uncle, you wait for two days, I will go back and let the craftsmen in the house make it, and when it is done, I will make a demonstration in front of you, and then you will know the benefits of this thing." Li Su still said with a look of awesomeness.

After returning to the Ministry of Industry, Li Su said goodbye to Duan Lun and didn't go anywhere, and immediately returned to the palace, ready to let the craftsman make what he just said he wanted to give Duan Lun, but as soon as he arrived at the palace, he saw a person who surprised him very much, and heard that this person had been waiting for him in the palace for a long time.

"Eighth brother, why do you have time to run to my house today?" Li Su walked into the living room with a smile and asked. The person who came was Li Zhen, who ranked eighth among the princes, when Li Su went to elementary school, this kid also grabbed origami with his son, and it can be said that he is a relatively tasteless guy.

"Sixth brother, you must help me this time, otherwise I will really have no face to live!" But what people didn't expect was that as soon as Li Zhen saw Li Su, she immediately burst into tears with excitement, as if a child without a father had finally seen her relatives, she jumped up and hugged Li Su's thigh, and cried!!