Li Dayan stomped his feet: "It's done! As long as I can build such a blast furnace, it's worth it for me Li Jimin to die!"

Guo Dalu smiled and said: "Uncle Li, a small blast furnace that is no more ordinary will excite you like this, and you will die with your will, what is not dead, in the future, I will teach you to build a furnace that produces dozens of tons, thousands of tons or even tens of thousands of tons of molten steel." ”

Li Da's eyes were dizzy, but he did not question Guo Dalu's blind bragging, he sank his heart, pondered the blast furnace diagram, and gestured: "Such a large furnace, it is not possible to use ordinary manpower to pull the box for the blast, you have to use other methods, or use a large livestock to pull, or build a water wheel, and use a mechanism to pull, so that the wind can be strong enough." The furnace must be cast with good steel, so we have to use the steel filling sand that Guo Ge'er used just now to get a batch of good steel to make the furnace body--"

Guo Dalu said: "There is a ring of refractory bricks in this furnace - this work will be done by Zhao Tang and his potters, and it will be started together with the coking work." As for the stainless steel furnace body, it is too slow to use the steel filling method, so let's let Dahei do it. ”

Guo Dalu pulled Da Hei and patted it on the head: "You idiot, take off the armor on your body." ”

Brother Hao snorted: "The armor on Da Hei's body is the best steel, it only needs to eat a meal of iron ore and soon grow a new armor, and it is really convenient and fast to use this armor to build a furnace body." Hey, Brother Guo, since we have this good way, let's just let the big gangsters make steel for us, why bother with any blast furnace?"

Before Guo Dalu could speak, Chen Qingdai glanced at Brother Hao: "This stupid cow is just eating iron and steelmaking day and night, and how much stainless steel armor can be changed? This blast furnace is different, after the successful trial in our village, Da Li Chao can erect this blast furnace where there is coal and iron, and make steel day and night." Now borrowing the ability of Dahei, it is just to let us try to make the first blast furnace to save a little effort, and it is not of great use. ”

Brother Hao stuck out his tongue: "Sister Chen's lesson is that I am short-sighted, Da Hei, quickly take off the armor on my body." If you want to grind again, I'll do it myself!"

The big girl was also coaxing Da Hei next to her: "Da Hei, I'll shine more on you with the treasure lamp later, and help you cultivate." ”

Da Hei had no choice but to use his spiritual power, and a piece of stainless steel armor fell to the ground with a clatter, Li Dayan and others hurriedly lifted these armor pieces, and began to process them to make the furnace body.

These jobs are heavy work that requires hard work, Guo Dalu can't help, he went to Zhao Kang and others to talk about burning refractory bricks and coking, that coking will produce great pollution, must be dealt with, otherwise it will bring great harm to Houlong Village.

Zhao Kang and other potters have been very respectful to Guo Dalu since they saw Guo Dalu return from the clouds, this is a fairy master, naturally he is deadly.

It is easy to make refractory bricks, with the temperature of the coal kiln greatly increased, for Zhao Kang, it is just a trivial matter, but the amount of refractory bricks used in the trial production of blast furnace is not much, and it is not a good kiln to be used once and it is empty, right?

Guo Dalu scratched his head, indeed, the most taboo of this brick kiln is to stop the kiln to cool down, simply, after making refractory bricks, as long as some processes are reduced, a little lower furnace temperature can be made to produce a large number of bricks that are better than the current green bricks - red bricks.

Don't underestimate this red brick, the reason why the ancient house is not built is high, in addition to the regulations formulated by the government, the small people are not allowed to build high-rise buildings, the main reason is that the green bricks are not strong enough, not enough to bear the weight of too high floors, if there are red bricks, ordinary brick-concrete structures can also build higher floors, three or four floors are no problem, and even six floors can be built.

With red bricks, there should naturally be cement, the manufacturing process is also not complicated, 70% lime powder, 20% clay fine powder and 10% anthracite powder are stirred evenly, put into the iron water mill and grind into powder, you can put it into the lime kiln to fire cement clinker. After the clinker cools, 5% cinder is added and put into the water mill, and the cement with a grade of 300 is made by grinding into powder.

It is not difficult to burn lime and other processes, it is difficult to penetrate a little, and it is difficult to grind limestone into powder, which is almost an impossible job in ancient times without a strong power source and abrasives, and the Romans can only use volcanic ash instead, in fact, this is not real cement.

However, this problem is not a problem for Guo Dalu, this is not a demon bull Dahei, once again from its body to pick up a layer of armor, made of stainless steel water mill, you can grind the limestone - Da Hei is going to cry, when is this layer of peeling is the head, Guo Dalu had to take a few stainless steel knives to bribe Da Hei, Da Hei ate the knives to be satisfied.

However, Da Hei soon found that he consumed his spiritual power and desperately ate iron ore to conjure up steel for use at various construction sites on Guo Da Road, although he was very tired at the beginning, but gradually, there was an inexplicable increase in his body with other mana, which was more refined and powerful than his natal spiritual power, which was naturally the power of merit.

The demon cow Dahei assisted Guo Dalu in making steel, and he also had a merit, but it was cheaper for this guy, and since then he got rid of the beast road and cultivated the positive fruit, otherwise, it will be just a little demon cow for the rest of his life.

Gossip aside, Guo Dalu's most important thing is coking.

In fact, coking is not difficult, the coal is sealed in an earthen kiln to isolate the air from dry burning, and the coke can be produced, but this can be done with less coke, heavy pollution, and terrible low efficiency, Guo Dalu can not do it. He had been teaching himself for sixteen years, and he had to come out with some dry goods.

Guo Dalu uses a German-style coke oven to recover chemical products, which may send the recovered net gas back to the combustion chamber for heating, but a transverse regenerator is added from time to time, and the air required for combustion is preheated into the fire channel in the regenerator, which is almost the prototype of the modern coke oven. Although there have been many improvements in the coke oven since then, the main thing is to gradually improve the mechanization level and large-scale operation, and the overall design idea has not changed much.

For a time, the back mountain of Houlong Village has become a huge construction site, the iron shop is bright day and night, the sound of striking iron is ringing, a high-temperature kiln is covered, a waterwheel is erected by the stream, the axle part is all made of steel, driving the transmission mechanism, used to grind iron ore, limestone, coal mine, etc., black smoke rises, dust covers the sun, so that the beautiful Houlong Village does not know how many hundred years in advance, and has entered the era of industrial pollution and haze in one fell swoop.

On this day, Guo Dalu wore a mask made of multi-layer linen, and shouted to Zhao Kang, who was also wearing a mask: "When coking, people must be in the limelight, the exhaust gas coming out of this kiln is poisonous!

Zhao Kang nodded again and again: "Brother Guo, don't worry, we don't dare to be sloppy, there are little masters staring at us." ”

Zhao Kang said that the little masters, is the children in the Yixue School, Guo Dalu does not want to cultivate a group of nerds who only know about exam-oriented education, science is now more important is to apply what they have learned, so the students of Yixue are sent to various construction sites in batches, while participating in labor, while recording and observing the problems found in production, and further improving.

Guo Dalu saw at a glance that Chen Qingdai was drilling in and out of the newly built coke kiln, holding a notebook in his hand, drawing a diagram of the internal structure, he grinned, Chen Qingdai was too active, the work in the blast furnace was not enough for her to be busy, and she actually went to the coke kiln to join in the fun.

At this time, Chen Qingdai looked at the notebook in her hand, suddenly frowned, thought carefully, and then raised her head and saw Guo Dalu at a glance: "Hey, Dalu, come here, there is a problem with this kiln." ”

Guo Dalu trotted over quickly: "Is there a problem? That's impossible, this is what I learned from Baidu--cough-cough, this is what I learned from the old man in the mountains." He originally wanted to say that he had seen it from Du Niang, but fortunately swallowed it in time.

Chen Qingdai glanced at Guo Dalu: "I said that if there is a problem, there is a problem, you see, this place should be a heat storage room, but the angle of this wind is wrong, which may cause hot air to flow back." ”

Guo Dalu is actually a piece of paper, all the knowledge is in the book, and it has not been practiced at all, hearing Chen Qingdai say this, he is also a little worried: "That, let me see." "After watching it for a long time, I didn't see a single reason.

Chen Qingdai was impatient: "Listen to me, that's right, you forgot, what I originally did." Chen Qingdai deliberately accentuated the sound of the word "original".

Next to him, Zhao Kang was confused, wasn't Chen Qingdai originally a peasant aunt? Could it be that her ancestors also burned kilns?

But Guo Dalu understood that Chen Qingdai was a dragon, or a dragon with two spiritual powers, water and fire!

Guo Dalu hurriedly said: "Okay, listen to Chen Qingdai, let's repair the Yongdao." He patted Chen Qingdai on the shoulder: "Chen Qingdai is very good, this is to apply what you have learned, you always feel shallow in school, you must know that you have to bow to this matter, students should learn from Chen Qingdai, and use the scientific knowledge learned in righteousness to find and solve problems in labor." ”

Chen Qingdai watched Guo Dalu take the opportunity to make a fuss on herself, and rolled her eyes at him angrily, but now she is just a country girl with more strength, and she is still a student of Guo Dalu in name, so she can't beat this color embryo into the ditch with one punch in front of everyone.

In fact, Chen Qingdai wronged Guo Dalu, Guo Dalu patted her on the shoulder, but she was overly anxious, and forgot that the two of them were not in the Shuijing Cave Mansion for a while.

That's right, Guo Dalu was anxious, and even insomnia because of it.

This steelmaking, different from the previous snow sugar, steamed alcohol, from a technical point of view, is a huge leap, the difficulty of which can be imagined, don't look at Guo Dalu every day behind his back in the construction site around, just move his mouth, but back to the house, when alone, he frowned, over and over again thinking about his design, arrangement, guidance, whether there are mistakes. (To be continued.) )