After coming out of the palace, Li Zexuan went back to Yunshan directly, and he had to quickly draw the drawings of the equipment needed for iron-making in the past two days, because these things were not easy to build at all.

"Lady, I've been in the study for the past two days, don't let people bother me if there's no emergency!"

Back at home, Li Zexuan said to Han Yuxi.

Yunshan Villa is good at this, because he is far away from the main city, usually inaccessible, very quiet, and the mountains and rivers here are beautiful, and it is a treasure land of self-cultivation!

"Hmmm! But don't get tired of your body, our family doesn't lack anything now, why work so hard? ”

Han Yuxi obviously understood what Li Zexuan was going to do, and it was not the first time that a similar situation had happened, so she said with a worried face.

"Haha! Rest assured, with your husband's physique, it is impossible to get tired! I don't believe that when the minister is done, he will fight with the lady for 300 rounds! ”

Li Zexuan smiled and pinched Han Yuxi's pretty face, and then said unseriously.

Of course, although he said so, he still cared about his daughter-in-law in his heart.

"Xianggong~!"

Han Yuxi was ashamed and angry, she stomped her feet and said a coquettish word, but Li Zexuan had already slipped away at this time!

……………………………

"Blast furnace ironmaking, if you want to improve the efficiency of ironmaking, you must build a blast furnace!"

In the study, Li Zexuan faced a large blank sheet of paper on the bookcase and muttered to himself.

Industrially, the methods of ironmaking include blast furnace method, direct reduction method, melt reduction method, plasma method, etc., blast furnace ironmaking is the main method of ironmaking in modern society, and its output accounts for more than 95% of the world's total pig iron output.

Blast furnace ironmaking is a complex process. The raw materials it uses are iron ore, limestone, and coke. The reaction that occurs in the blast furnace is mainly divided into three parts, the first part is the process of preparing the reducing agent, the second part is the main principle of iron smelting, and the third part is the process of removing impurities and forming slag. However, the iron smelted by the blast furnace is not pure and contains a small amount of impurities, so it is called pig iron.

During ironmaking, raw iron ore, coke and limestone are added to the blast furnace (iron-making furnace) in layers according to a certain proportion, and a large amount of oxygen-rich air heated by the hot blast furnace is blown into the blast furnace from the air inlet, so that the coke is burned to produce carbon dioxide, and the carbon dioxide is then reduced to carbon monoxide by reacting with the hot coke in the upper layer;

Carbon monoxide is added from the top of the furnace and reacts with the declining iron ore. Among them, the oxide of iron is gradually reduced to liquid iron, commonly known as molten iron. The reduced liquid iron accumulates to a certain extent and is released from the bottom of the furnace. The limestone added during ironmaking plays a slag making role, and the purpose is to make the gangue with a high melting point in iron ore (its main component is silica) react with limestone to generate calcium silicate floating on the molten iron, etc., forming slag and separating from molten iron.

In fact, blast furnace ironmaking is not the patent of modern people, as early as the Song Dynasty, this ironmaking method was popularized.

According to historical records, during the Yuanfeng period of the Northern Song Dynasty, the imperial court military weapons supervisor set up blast furnaces on both sides of the Bianhe River, and the red light of ironmaking reflected the sun, day and night. At the peak of production, the annual steel output in North China alone reached more than 70,000 tons; You know, it took the British Empire exactly 700 years later to reach an annual production of 780,000 tons of steel, when it had already begun the Industrial Revolution.

It can be seen how powerful the national strength of the Song Dynasty was at that time! It's just that there were fewer famous ministers, fierce generals and sages at that time! If Li Er's team of civil and military ministers is sent to the Song Dynasty, maybe it can really create a super prosperous era!

"Tut, fortunately, I traveled to the Tang Dynasty, if I traveled to the Song Dynasty or after the Song Dynasty, how could I use blast furnace ironmaking to pretend to be forced?"

Li Zexuan's mind didn't know where to fly, and he only heard him mutter.

Some of the later generations of YY, the protagonist traveled to the Song Dynasty and the Ming Dynasty and built blast furnaces to make iron, those are pure nonsense, if the protagonist really wants to do that, he can only pretend to be forced but be slapped in the face!

Shaking his head and shaking off the messy thoughts in his mind, Li Zexuan groaned slightly and began to draw drawings. At this time, he already had a three-dimensional model of the iron-making blast furnace in his mind, and he naturally became a humanoid printer.

He planned to completely reproduce the blast furnace often used in modern ironworks, and then renovate it according to the existing conditions of Datang, which was not an easy job.

The structure of the blast furnace is not very complicated, and the "Great Movement" at the end of the fifties called on the people of the whole country to make steel, and even some primary school students, villagers in the production team, and salesmen in non-staple food stores formed iron-making teams to build blast furnaces to make steel and iron.

But the structure of the blast furnace is definitely not simple, the technical level of those blast furnaces in modern China is about the same as that of the Song Dynasty, theoretically it is able to make iron, but the technology is not mastered, so most of them are not finished. Li Zexuan: The blast furnace he wants to build is not the kind of defective product, and if he wants to do it, he will make the best one.

Generally, a complete blast furnace is composed of furnace shell, furnace throat, furnace body, furnace waist, furnace belly, furnace cylinder, furnace bottom, furnace base, furnace lining, and furnace throat guard. The furnace shell refers to the outermost layer of the blast furnace, and its main function is to stabilize the blast furnace masonry and protect the furnace body from leakage;

The furnace body, blast furnace iron ore is mainly indirectly reduced in the furnace body;

The throat of the blast furnace is the top part of the furnace body. The shape is like a cylinder, and the raw materials for ironmaking are added from the furnace throat, and the gas is also discharged from the furnace throat;

The throat guard plate refers to the protective plate of the furnace throat;

The waist of the furnace, where the diameter of the blast furnace is the largest, which connects the furnace body and the belly;

The belly of the furnace, in the form of an inverted cone, is the main area for blast furnace melting and slag making;

Furnace cylinder, used for fuel combustion, slag-iron reaction, storage and gas discharge, cylindrical shape;

The bottom of the furnace is located at the very bottom of the blast furnace. The bottom of the furnace is subjected to the static pressure of the charge, slag and molten iron, and is also subjected to high temperature, mechanical and chemical attack of 2000~4500 °C;

The main function of the furnace foundation is to evenly distribute the weight of the blast furnace to the ground, and its shape is gradually expanded from top to bottom. Generally, there are circles or polygons to reduce the uneven distribution of thermal stress;

Time passed bit by bit, even though Li Zexuan had the super speed of a "humanoid printer", after the internal and external structures of a blast furnace were fully drawn, the sky was already dark.

"Bang bang~!"

Just when Li Zexuan was intoxicated in the sea of construction machinery, there were two knocks on the door, followed by a burst of footsteps, Li Zexuan's brows frowned at first, and then stretched out, because he just listened to the footsteps, he knew that it was Han Yuxi who pushed the door in.

Although it has been less than a year since they got married, the husband and wife have already engraved everything about each other in their hearts, including the sound of footsteps.

"Xianggong, let's eat something first! Horizontal and vertical are not bad for so much time, the body is the most important! ”

Han Yuxi put the food box on another table, turned back to Li Zexuan and said.

Li Zexuan put away his thoughts, clapped his hands, got up and walked towards Han Yuxi.

"Huh! Thank you for the meal! Ay! I didn't feel hungry, but when I smelled the aroma of this food, the gluttonous worms in my stomach began to make a fuss! The heavenly gods of kitchen must bow down to the wind! ”

Li Zexuan sat down, and when he saw Han Yuxi bring out two plates of fragrant dishes from the food box, he said with a smile.

"Xianggong is less troublesome! Eat it! ”

Han Yu glanced at it with disgust and said coquettishly.

"Haha! Eat, eat, eat! Isn't this eating? Lady, do you want to come and eat together? ”

"No, let's eat it! The concubine has already eaten! ”

Han Yu replied, and then set his eyes on the several large drawings on the bookcase.

The twists and turns on the drawings, as if they had life, outlined a huge and majestic blast furnace, maybe Li Zexuan's painting was too lifelike, Han Yuxi seemed to be able to feel the terrifying heat in the furnace, so he couldn't help but take two steps back.

"What? Is the lady still interested in engineering? ”

Li Zexuan asked with interest while chewing the food in his mouth.

"Nope! The concubine body is just a casual look! ”

Han Yuxi came back to her senses, she thought for a moment, and said: "The concubine saw that Xianggong's drawings were so good, and she thought in her heart, if Xianggong used this technique in painting, she would definitely not lose to Young Eunuch Yan (who is about to become Young Eunuch Yan Liben)!" ”

Don't think that engineering drawings are all stiff and unaesthetic lines, the key is to look at the craftsmanship of the person who draws it, and the engineering drawings of highly skilled people can definitely feel the beauty of the works of art, Li Zexuan belongs to this kind of person now.

"Hmm! Just leave this kind of thing to Yan Shaojian and them, you don't have that spare time! Although we are excellent, we can't do everything and leave no way for others to live, right~? ”

Li Zexuan half-jokingly stinked and said.

"Flutter~!"

When Han Yuxi heard this, he covered his mouth and smiled: "Xianggong, how can anyone boast about himself?" Shame or shame? ”

Li Zexuan rolled his eyes, "Why can you boast about your lady, but you can't boast about your husband?" ”

Han Yuxi shook her head, too lazy to care, and then she suddenly remembered something and said, "That's right! Messire! The drawings you drew last time, the concubine helped you lock them in the cabinet, why don't you use them? Have you forgotten? ”

What she said was actually the generator drawings that Li Zexuan drew last time.

"Not for now! It's coming to the end of the year soon, and I'm too lazy to toss those for my husband! Let's have a peaceful and stable year first! ”

Li Zexuan replied.

"Uh-huh! In the past, the New Year was spent with Tie Dan and Daddy, can Xianggong take them over for the New Year this year? ”

Speaking of the New Year, Han Yuxi's eyes instantly glowed with dazzling brilliance, although she is a wife, but she is only thirteen or fourteen years old, she may still retain some innocence in her heart, looking forward to the excitement and joy of the New Year.

"Huh! Why not? As long as the lady is happy, don't say this little thing, you want the moon in the sky, and the husband will also pick it back for you~! ”

Li Zexuan laughed.

Even if Han Yuxi doesn't say it, he will do it then, his father-in-law and brother-in-law will celebrate the New Year, how can it work! Naturally, it is the two families who celebrate the New Year together to be lively!

"Hee-hee! The moon in the sky is bare, what does the concubine want to do? But the concubine is still grateful to the princess for agreeing! ”

Han Yu smiled and said.

"Hmm, what is the family doing? Belch~! Well, I'm done eating! Lady, go and rest first! I'm going to bed a little later tonight! ”

Li Zexuan put down the dishes and chopsticks, burped contentedly, and said.

Although the general drawings of the iron-making blast furnace were drawn, there were still many details that he needed to consider one by one.

"Xianggong, can't you paint again tomorrow? There's no need to rush this time, right? ”

As soon as Han Yuxi heard this, he knew that Li Zexuan was going to "work overtime" tonight, so he persuaded him.

"Hey! Some things have to be done in one go, and if this breath is vented, it will take a long time to find it back next time! Don't worry, lady, I'll go to rest when I'm sleepy, and I'm definitely not strong! ”

Li Zexuan touched his daughter-in-law's black and supple hair, and said softly, in fact, with his current martial arts cultivation, he can bear it even if he doesn't sleep for three days and three nights!

"That's good! Xianggong, you have to talk about it! The concubine body won't bother you! ”

Han Yuxi knew that Li Zexuan's decision could not be persuaded to come back, so he compromised.

"Hmmm! Lady, go and rest! ”

Li Zexuan said with a smile.

Han Yuxi nodded and walked out of the study with the dinner box. The study was quiet again.

"Fire-resistant! First of all, the inside of the furnace must be fire-resistant! ”

Li Zexuan looked at the structural diagram he had drawn earlier, and he muttered to himself after a moment.

"That's right! Refractory cement! By the way, get the refractory cement out! Recently, let Fubin hurry up and go to Shuozhou, and get some bauxite back first! ”

Suddenly, Li Zexuan's eyes lit up and he said excitedly.

Shuozhou, Shanxi, his college roommate in his previous life was from this city, that guy is a real family mine, not a coal mine, not an iron mine, but a bauxite mine, he went to the scene with him during the National Day holiday one year.

Coincidentally, his roommate unknowingly once boasted about the history of Shuozhou in him, saying that the name "Shuozhou" already existed in the Northern Zhou Dynasty, and although it was renamed Mayi County in the Sui Dynasty, Li Yuan changed it back in the Tang Dynasty, which can be described as a historical city.

The current Li Zexuan, with his memory, can even mark the detailed location of the bauxite in his roommate's house in his previous life on the map!

"Hey, hey! Old classmate, I'm sorry, your mine will be borrowed from me first! You shouldn't mind, right? ”

Li Zexuan was like a nervous person, talking to "air".

Bauxite is also known as high-alumina clay, the main minerals are diaspore monohydrate, boehmite, gibbsite and kaolinite, etc., which has a high alumina content, and is refractory cement after grinding with limestone calcination; Directly pressed into bricks, it can be fired into refractory bricks, and the lowest refractory temperature can reach more than 1,500 degrees!

In fact, the kind of small blast furnace in the Song Dynasty is generally built directly with clay, but the life span is not high, Li Zexuan wants to build a blast furnace that is closest to the kind used in modern steel mills, so this kind of high-grade refractory materials used in modern steelmaking furnaces can naturally be used!

What's more, he also has a bauxite mine that his old classmate "left" for him! Don't be in vain!

2-in-1 chapter!

(End of chapter)