"Well, what are you doing as a family thanking each other? Hiccup~! Okay, my husband has finished eating! Madam, you go to rest first! I will go to bed a little later tonight!"

Li Zexuan put down the bowl and chopsticks, burped with satisfaction, and said.

Although the general drawing of the iron-making blast furnace was drawn, there were still many details that needed to be considered one by one.

"Ms. sir, can't you paint again tomorrow? There's no need to rush now, right?"

When Han Yuxi heard this, she knew that Li Zexuan would have to "work overtime" tonight, so she tried to persuade him.

"Hey! Some things have to be done at once. If you let go, it will take a long time to get it back next time! Don't worry, madam, I will take a rest when I'm sleepy. I won't force myself!"

Li Zexuan touched his wife's black and smooth hair and said softly, in fact, with his current martial arts training, he can handle it even if he doesn't sleep for three days and three nights!

"Okay! My husband, you must keep your word! I won't disturb you anymore!"

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

"Well! Madam, go and have a rest!"

Li Zexuan said with a smile.

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

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

Li Zexuan looked at the structural diagram he had drawn before and was in a daze. After a while, he murmured to himself.

"Yes! Refractory cement! Let's get out the refractory cement by the way! I recently asked Fubin to go to Shuozhou quickly 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 really had a mine at home, not a coal mine or an iron mine, but a bauxite mine. He even went with him during the National Day holiday one year.

Saw it live.

Coincidentally, his roommate once boasted to him about the history of Shuozhou, saying that the name "Shuozhou" had already existed in the Northern Zhou Dynasty. Although it was renamed Mayi County in the Sui Dynasty, Li Yuan changed it back to Mayi County in the Tang Dynasty.

Yes, it can be said to be a famous historical city.

Now Li Zexuan, relying on his memory, can even mark the detailed location of the bauxite mine at his roommate's house in his previous life on the map!

"Hey! Old classmate, I'm sorry, but I want to lend you your mine first! You don't mind, right?"

Li Zexuan talked to "Air" like a neurotic.

Bauxite is also called high-aluminum clay. The main minerals are diaspore, boehmite, gibbsite and kaolinite. This stuff has high alumina content. After grinding and calcining with limestone, it becomes refractory cement; directly

Pressed into bricks, they can be fired into refractory bricks, with the lowest refractory temperature reaching more than 1,500 degrees!

In fact, the small blast furnaces in the Song Dynasty were generally built directly from clay, but their lifespan was not long. Li Zexuan wanted to build a blast furnace that was closest to the one used in modern steel plants, so this modern steelmaking furnace used high-grade refractory

Just use the materials as long as they are available!
Chapter completed!