Otaku Engineer in Great Tang Dynasty Chapter 1365: Smelting vanadium!

Yanhuang Academy.

In the meeting room of Guanghua Building, Wang Ji was full of excitement, pulling Li Zexuan to go to the workshop, forgetting that he just wanted to "cope" with Li Zexuan as soon as possible and went back to memorize the "Confidentiality Regulations".

As the head of the Chemistry Department, Wang Ji has the most thorough research on the several "Chemistry" textbooks compiled by Li Zexuan. No one knows the important role of sulfuric acid better than him. It can be said that Li Zexuan's "Chemistry" textbook is quite Some chemical reactions are directly or indirectly related to sulfuric acid.

As early as last year, Wang Ji made dilute sulfuric acid using green alum through his own exploration, but that method can be used to make dilute sulfuric acid in a small amount. If you want to make a large amount of sulfuric acid or concentrated sulfuric acid, obviously it won't work!

Later, Li Zexuan introduced him to sulfur dioxide using vanadium pentoxide as a catalyst, heating in the air to generate sulfur trioxide, and then producing concentrated sulfuric acid. He has been looking forward to Li Zexuan to find the legendary vanadium soon. Mine, I didn't expect this to be four months!

Now that he finally waited for the vanadium mine, how could he not get excited?

At the urging of Wang Ji, the two soon arrived at the iron smelter of the workshop.

But at this time, Wang Ji was a little confused, because he didn't know how to extract vanadium from vanadium-titanium magnetite!

So Wang Ji looked at Li Zexuan and asked: "Shanchang, how should this ore be refined to extract vanadium from it~?"

Li Zexuan was actually thinking about this issue on the way here. Hearing this at the moment, he replied in a deep voice:

"This vanadium-titanium magnetite is mainly composed of oxides of iron, vanadium, titanium, chromium, cobalt and other metals. We can put it into the iron-making blast furnace and mix it with soda ash for roasting. With the action of sodium salt as an additive, the lattice structure of the vanadium-containing silicon-oxygen tetrahedron and silicon-oxygen tetrahedron in the vanadium-titanium magnetite will be destroyed, and the vanadium will be exposed and converted into pentavalent vanadium;

The sodium ion in the soda ash reacts with it, and the sodium vanadate produced is soluble in water, while the residues of other impurity metals are insoluble in water, so we can use water leaching method to hydrolyze the crude vanadium and then filter it out Impurities, refined vanadium salt precipitated from the solution! After the refined vanadium salt is precipitated and calcined, the catalyst vanadium pentoxide we need can be obtained! "

The method he said is called the salt-added roasting vanadium extraction process in modern times. It can be regarded as a relatively primitive method for extracting vanadium. The choice of sodium salt can be soda ash (sodium carbonate), sodium sulfate or table salt. (Sodium chloride). In comparison, sodium chloride has the best roasting effect, but sodium chloride will undergo oxidation-reduction reactions at high temperatures to generate chlorine gas, which seriously pollutes the atmosphere, so Li Zexuan did not choose this option!

In addition, the main advantage of the sodium carbonate roasting scheme is that the required equipment is simple and the required raw materials are readily available, such as soda ash. Although no one could artificially synthesize this thing in ancient times, there are many in nature. soda ash.

But the disadvantage of this method is also obvious, that is waste! Because the main product of this scheme is vanadium pentoxide, other metal components such as iron, titanium, chromium, cobalt, etc. are directly filtered out as residues, especially iron. You must know the iron content of vanadium-titanium magnetite As much as 20-30%, while the vanadium content is less than 2%!

So this method of extracting vanadium is a huge waste for iron, but Li Zexuan doesn't care about this now, he needs vanadium, not iron!

Wang Ji now has a good chemical foundation, but after listening to Li Zexuan’s suggestion of the vanadium technology theory, he still can’t keep up with it. He stayed in place for a long time, and finally some reacted. Then he nodded and said: "Since the mountain leader has a solution, Wang will do it! But please also ask the mountain leader to guide~!"

An old man in his forties or fifties asked a teenage boy for guidance. How weird this scene is, but the tone of Wang Ji's words was taken for granted, without any awkwardness. !

The expert is a teacher, he thinks he is far inferior to Li Zexuan in chemistry!

"Um! Okay! Let's get started~!"

Li Zexuan nodded and said.

…………………………………

Li Zexuan was immersed in scientific research here. In the city of Chang'an, in the imperial palace, Lao Li, who had left the early reign, was drinking tea with his family in the garden of Xiyuan.

He is completely in love with the taste of fairy tea now!

If someone brought him a cup of tea soup like that before, he would definitely let someone pour it! Because the old tea soup is nothing but **** compared with this fairy tea!

In addition, Lao Li deeply remembered that when Li Zexuan brought him Shenxian tea that day, he also sent a note. The note clearly read "Drinking can invigorate and relieve fatigue, It helps digestion and delays aging", yes, he values ​​the words "delay aging"!

Last year, when Li Er asked Li Zexuan that there is a way of longevity in the world, Li Zexuan refuted him mercilessly, so it is hard for him to ask if Li Zexuan's fairy tea can really delay aging, but he believes, Li Zexuan would definitely not talk nonsense about this kind of thing, so he chose to believe it! What's more, the taste of Shenxian tea itself is so great, why does he not like to drink it?

In fact, drinking tea can delay aging, this Li Zexuan really did not deceive Li Er. Because the tea polyphenols in tea have an inhibitory effect on various oxidases, they can efficiently scavenge free radicals, which is the fastest antioxidant pathway, and can inhibit the generation of free radicals and activate the body's antioxidant enzyme system; research It shows that the antioxidant properties of tea polyphenols are significantly better than vitamin E, the anti-aging effect is 18 times stronger than vitamin E, and it has synergistic effects with vitamin C and E.

But if you want to rely on tea for longevity, Li Zexuan can only tell Lao Li, "You think too much." If this tea is really bad, wouldn't all the modern tea sellers get rich?

"Hehe! Guanyin maid, you said that Li Zexuan, this kid is really a big tone, and he actually named this tea Shenxian tea?"

Li Er took a sip of tea and said comfortably.

The grandson queen smiled and said: "The tea soup brewed from this tea has a clear color and a smooth taste. In the mouth, the tea is lingering, and the tea soup can reduce fatigue and delay aging. With these, My concubine thinks it is not an exaggeration to call it a fairy tea!"

Li Er smiled and couldn't comment.

The yin concubine sitting opposite him, but his eyes lit up, and quickly asked the grandson queen: "Sister, can this fairy tea really delay aging?"

Women love beauty, especially the women in this harem. Who doesn't want to be able to live forever?

The eldest queen smiled faintly: "This is just what Yonganhou said in my palace. If my sister believes it, it's up to me!"

Yin Concubine smiled and said: "Hou Yong'an is young, so he is both civil and military. Since he said that, there will be no fakes. I don't know when his **** tea will be supplied to the palace in large quantities!"

The Changle next to him, Zhanyan smiled at this time: "After Xiaoxuan's brother supplies the fairy tea to the palace, Changle must drink tea every day!"

Li Chengqian said silently: "How old are you in Changle, so you want to delay aging?"

Li Er is also looking at his daughter with a funny face.

I saw Changle with a sweet smile and said: "Changle doesn't want to grow up, so he can always be with his father, the queen, and the prince brother!"

As soon as this remark came out, everyone laughed, and for a while, the garden was so warm.

After a while, Zhao Song came over, then attached to Li Er's ear and said a few words, Li Er's eyes flashed, and then stood up and said: "I have something to deal with, Changle, Chengqian, you are good to be with you. Drink tea after your mother!"

"Yes! Father!"

Chang Le and Li Chengqian got up quickly.

Li Er nodded and took Zhao Song out of Xiyuan.

"Li Zexuan's servants came back from the land of Bashu? You said they looked embarrassed?"

Leaving Xiyuan, Li Er asked aloud as he walked.

Zhao Song bowed slightly and said, "Yes, your majesty! At the beginning of the year, Yonganhou sent a servant to look for mines in Shu. There are not a few people who know about this. The servant brought a few with him this morning. The sergeant returned to Lantian, dressed in rags and very embarrassed!"

Li Er frowned and said: "Did they meet the robbers on the road? Or they had an accident in Shu? But they were holding Li Zexuan's fish charm, what accidents would they encounter in Shu? Could the situation in Bashu have changed?"

Thinking of this, Li Er's expression became extremely serious. After all, Datang had just experienced a rebellion, so he couldn't help being careless!

Zhao Song's face sank, and he dared not answer.

Li Er continued to ask: "Where is Li Zexuan now? His subordinates are so wronged, can he sit still?"

Zhao Song replied: "My Majesty, Yonganhou is in the workshop at the moment, and he must be refining the ore brought back by the servant!"

"Oh!"

Li Er couldn't help but breathe a sigh of relief, because if there is really a situation in Bashu, Li Zexuan should come to the palace to report to him the military situation as soon as possible, instead of going to the workshop to refine the ore. Li Zexuan is a person who knows the priorities.

"Okay! Go down! That kid will definitely go to the palace to find me!"

Li Er waved his hand and smiled.

……………………………

The other side.

After nearly three hours of hard refining~IndoMTL.com~Li Zexuan finally got the gray-black flake vanadium pentoxide!

"Shanchang, is this the catalyst vanadium pentoxide we need?"

At this time, Li Zexuan and Wang Ji had already put on "masks". Wang Ji pointed to a group of gray-black flakes and asked.

Li Zexuan grabbed Wang Ji's hand and said, "Don't touch it with your hands. This thing not only damages the respiratory tract, but also damages the skin. Put on rubber gloves and put them in a bottle! This thing It is basically determined that it is the vanadium pentoxide we need. I will do the rest of the experiment later. I have to go to the palace now!"

……………………

Second more!

Additional 6/10 bonus for the leader of the black and red plum party

Indeed -1=17

(End of this chapter)