Otaku Engineer in Great Tang Dynasty

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

"Ma'am, I've been retreating in the study for the past two days. If there is no emergency, don't let anyone disturb me!"

Back home, Li Zexuan said to Han Yuxi.

Yunshan Bieyuan is good for this, because it is far away from the main city, it is usually inaccessible, very quiet, and the mountains and rivers here are beautiful, it is a treasure place for self-cultivation!

"Yeah! But Xianggong, please don't get tired. Our family doesn't lack anything now, so why work so hard?"

Han Yuxi obviously understood what Li Zexuan was going to do, and it was not the first time that something like this happened, so she said with a worried expression.

"Haha! Don't worry, madam, with your husband's physique, it is impossible for you to be exhausted! If you don't believe me, wait for the husband to finish his work, and then fight against the lady for 300 rounds!"

Li Zexuan squeezed Han Yuxi's pretty face with a smile, and then behaved in a serious manner.

Of course, even though he said that, he was still very useful in his concern for his daughter-in-law.

"Xiang Gong~!"

Han Yuxi was embarrassed and angry, she stomped her feet and sneered, but Li Zexuan had already slipped away at this time!

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

In the study, Li Zexuan muttered to himself facing a large piece of white paper on the bookcase.

In modern industry, ironmaking methods include blast furnace method, direct reduction method, smelting 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 total output of pig iron in the world.

Blast furnace ironmaking is a complex process. The raw materials it uses are iron ore, limestone and coke. The reaction in the blast furnace is mainly divided into three parts. The first part is the process of preparing 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 also contains a small amount of impurities, so it is called pig iron.

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

Carbon monoxide is added from the top of the furnace and reacts with the falling iron ore. Among them, iron oxides are gradually reduced to liquid iron, commonly known as molten iron. After the reduced liquid iron accumulates to a certain extent, it is released from the bottom of the furnace. The limestone added during iron making plays the role of slag making, the purpose is to make the gangue with a high melting point in the iron ore (its main component is silicon dioxide) react with the limestone to generate calcium silicate floating on the molten iron, etc. Slag is formed and separated 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 military equipment supervisor set up blast furnaces on both sides of the Bian River, and the red light of iron smelting 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 must know that the British Empire did not reach the annual steel output of 700,000 to 80,000 tons after a full seven hundred years, when it had already started the industrial revolution.

This shows how powerful the country was in the Song Dynasty 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 were sent to the Song Dynasty, maybe they could really create a super prosperous world!

"Tsk tsk, fortunately, my lord, I have traveled to the Tang Dynasty. If I traveled to the Song Dynasty or the Song Dynasty, how can I use the blast furnace to make iron to pretend?"

Li Zexuan's thoughts flew to nowhere, and he only heard him muttering to himself.

In some time-travel novels of later generations, the protagonist traveled to the Song and Ming dynasties and even built blast furnaces to make iron to pretend to be coercive. Those are pure nonsense. If the protagonist really wants to do that, he can only pretend to be coercive and be beaten in the face!

Shaking his head, getting rid of the messy thoughts in his mind, Li Zexuan pondered slightly and began to draw a drawing. At this time, he already had a three-dimensional model of the iron-making blast furnace in his mind, and he naturally became a human-shaped printer.

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

The structure of blast furnaces is not so complicated. The "Great Movement" in the late 1950s called on the people of the whole country to make steel, and even some elementary school students, villagers in production teams, and salespeople in non-staple food stores formed iron-making teams one by one to build blast furnaces. Come to steel and iron.

However, the structure of blast furnaces is definitely not simple. The technical level of blast furnaces in modern China is about the same as that of the Song Dynasty. In theory, iron can be made, but the technology is not mastered, so most of them are left unresolved. The blast furnace Li Zexuan wanted to build was not the kind of defective product, he wanted to build the best one.

Generally, a complete blast furnace is composed of furnace shell, furnace throat, furnace body, furnace waist, furnace bollard, hearth, furnace bottom, furnace foundation, furnace lining and furnace throat guard plate. The furnace shell refers to the outermost layer of the blast furnace. Its main function is to stabilize the blast furnace and protect the furnace body from leakage;

The furnace body, the iron ore of blast furnace is mainly indirectly reduced in this area of ​​the furnace body;

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

Furnace throat guard plate, which refers to the protection plate of the furnace throat;

hearth

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

The belly, in the shape of an inverted truncated cone, is the main area for melting and slag formation in the blast furnace;

Hearth, used for fuel combustion, slag-iron reaction, storage and exhaust gas, shaped like a cylinder;

The bottom of the furnace is located at the 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 erosion of 2000-4500c;

The main function of the furnace base is to evenly distribute the weight of the blast furnace to the ground, and its shape is also 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 "human-shaped printer", after all the structures inside and outside a blast furnace were drawn, it was already dark.

"Bang Bang~!"

Just when Li Zexuan was immersed in the ocean of construction machinery, there were two knocks on the door, followed by footsteps. Li Zexuan frowned first, then stretched out again, because he only listened to the footsteps. , I knew it was Han Yuxi who pushed the door and came in.

Although they have been married for less than a year, 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! It's not too short of time horizontally and vertically, the body is the most important!"

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

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

"Haha! Thank you madam for enjoying the meal! Hey! I didn't feel hungry at first, but when I smelled the aroma of this meal, the greedy worms in my stomach started to make trouble! The god of chefs in the sky will probably bow down when they meet madam!"

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

"Xiang Gong, stop making trouble! Hurry up and eat!"

Han Yuxi glanced angrily and said softly.

"Haha! Eat, eat, eat! Isn't this eating? Madam, would you like to come and eat together?"

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

Han Yuxi responded with a sigh, and then turned her attention to the large drawings on the bookcase.

The zigzag lines on the drawings seemed to have life, and they outlined a huge and majestic blast furnace. Perhaps Li Zexuan's paintings were too lifelike. Han Yuxi seemed to be able to feel the terrifying heat in the furnace, which made him unable to resist. took two steps back.

"What? The lady is still interested in engineering matters?"

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

"No! The concubine is just looking at it casually!"

Han Yuxi came back to her senses, she pondered for a moment, and then said: "I saw that Xianggong's drawings were so well drawn, and I was thinking that if Xianggong used this technique in painting, he would not lose to Yan Shaojian (about to be a young master) Supervise Yan Liben)!"

Don't think that engineering drawings are all blunt and unbeautiful lines. The key is to look at the craftsmanship of the person who draws, and the engineering drawings of people with superb skills. You can definitely feel the beauty of works of art. Li Zexuan now belongs to this place. kind of people.

"Hmm! It's fine to leave things like painting to Yan Shaojian and the others. Your husband and I don't have that spare time! Although we are excellent, we can't do everything. We have to leave a way for others to survive, right?"

Li Zexuan said half-jokingly.

"Puchi~!"

When Han Yuxi heard the words, she covered her mouth and smiled and said, "Master, how can you boast about yourself? Are you ashamed or not?"

Li Zexuan rolled his eyes, "Why can you praise me, but not my husband?"

Han Yuxi shook her head and didn't bother to care. At this moment, she suddenly remembered something and said: "That's right! My husband! The drawings you drew last time were locked in the cabinet by your concubine. Why didn't you see them? Did you forget? ?"

She was actually talking about the generator drawings that Li Zexuan drew last time.

"Don't use it for now! It's almost the end of the year, so I'm too lazy to bother with that! Let's have a safe and secure New Year before we talk about it!"

Li Zexuan replied.

"Hmm! In the past, I spent the New Year with Tie Dan and Daddy. Can my husband take them over to celebrate the New Year together this year?"

Speaking of the New Year, Han Yuxi's eyes instantly glowed with a dazzling look. Although she is already a woman, she is only thirteen or fourteen years old. She may still retain some innocence in her heart, looking forward to the lively and festive New Year.

"Haha! What's wrong with this? As long as the lady is happy, don't talk about such trivial matters, that is, I want the moon in the sky, and my husband will bring it back for you~!"

Li Zexuan laughed.

To be reasonable, even if Han Yuxi doesn't say it, he will do it when the time comes. His father-in-law and brother-in-law are the only ones who are celebrating the new year, so how can it be done! Naturally, it was only when the two families spent the New Year together that it was lively!

"Hee hee! The moon was bare that day, what did the concubine want to do? But the concubine still thanked the husband for agreeing!"

Han Yuxi smiled and said.

Apparently, she had seen the moon with the academy's telescope before.

"Well, what are the family doing to thank you? Hiccup~! Well, I'm done eating for my husband! Madam, please go to rest first! I'll go to bed a little later tonight!"

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

Although the general drawing of the iron-making blast furnace has been drawn, there are still many details that he needs to consider one by one.

"Xianggong, can't you paint again tomorrow? Don't worry about this time, right?"

As soon as Han Yuxi heard it, she knew Li Ze

Xuan wanted to "work overtime" tonight, so he persuaded.

"Hey! Some things have to be done all at once. If this breath is exhausted, it will take a long time to get it back next time! Madam, don't worry, I'll rest when I'm sleepy, and I won't force it!"

Li Zexuan touched his daughter-in-law's black and smooth hair and said softly.

In fact, with his current martial arts cultivation level, he can handle it even if he doesn't sleep for three days and three nights!

"That's good! Xianggong, you have to talk! The concubine will not disturb you!"

Knowing that Li Zexuan's decision could not be persuaded, Han Yuxi compromised.

"Well! Madam, go and rest!"

Li Zexuan said with a smile.

Han Yuxi nodded and walked out of the study with a plate and food box. The study room suddenly became quiet again.

"Refractory! First of all, the furnace must be refractory!"

Li Zexuan was dazed at the structure diagram he had drawn before, and after a while he muttered to himself.

"Yes! Refractory cement! By the way, let's make refractory cement! Recently, I asked Fu Bin to go to Shuozhou quickly, and come back with some bauxite!"

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

Shuozhou, Shanxi, his former college roommate came from this city. That guy is a real family with mines, not coal mines, nor iron mines, but bauxite mines. Li Zexuan went with him one year during the National Day holiday. Saw on the spot.

Coincidentally, his roommate repeatedly boasted to him about the history of Shuozhou, saying that the name "Suozhou" already existed in the Northern Zhou Dynasty. Although it was renamed Mayi County in the Sui Dynasty, Li Yuan changed it back in the Tang Dynasty. Yes, it is a historic city.

The current Li Zexuan, relying on his memory, can even mark the detailed location of the bauxite mine at his former roommate's house on the map!

"Hey! Old classmate, I'm sorry, but let me use your mine first! You shouldn't mind, right?"

Li Zexuan talked to "Air" like a neurotic.

Bauxite is also called high alumina clay. The main minerals are diaspore, boehmite, gibbsite and kaolinite, etc. This stuff has high alumina content. After grinding and calcining with limestone, it is refractory cement; directly Pressed into bricks, it can be fired into refractory bricks, and the minimum refractory temperature can reach more than 1,500 degrees!

In fact, the small blast furnaces in the Song Dynasty were generally built directly with clay, but their lifespan was not long. Li Zexuan wanted to build a blast furnace that was closest to the kind used in modern steel plants, so this kind of modern steelmaking furnaces only use high-grade refractory furnaces. Materials can be used naturally!

What's more, he still has a bauxite mine "left" by his old classmates! No need to be white!

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