Otaku Engineer in Great Tang Dynasty

Yanhuang Academy.

In the conference room of the Guanghua Building, Wang Ji was full of excitement, pulling Li Zexuan to the workshop, forgetting that he wanted to "cope" with Li Zexuan as soon as possible, and went back to recite the "Secrecy 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 contains a considerable part of chemistry. The 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, it obviously 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's hurry to find the legendary vanadium mine. Thinking of this wait is four months!

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

Under Wang Ji's urging, the two quickly 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 his way here. Hearing this, 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. At high temperature and sodium salt As an additive, the lattice structure of vanadium-containing silicon-oxygen tetrahedron and silicon-oxygen tetrahedron in vanadium-titanium magnetite will be destroyed, and vanadium can be exposed and transformed into pentavalent vanadium;

Then the sodium ions in the soda ash react with it, and the resulting sodium vanadium salt is soluble in water, while the residues of other impurity metals are insoluble in water, so we can use water immersion to hydrolyze the crude vanadium, and then filter out the impurities. Refined vanadium salt precipitated in 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 (chlorination). Sodium). In comparison, sodium chloride has the best roasting effect, but sodium chloride will undergo oxidation-reduction reactions at high temperatures to generate chlorine, 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 equipment required is simple, and the required raw materials are readily available, such as soda ash. Although no one can artificially synthesize this thing in ancient times, there are many soda ash in nature.

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 and so on are directly filtered out as residues, especially iron. You must know the iron content of vanadium-titanium magnetite As much as 20 to 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 it now, what he needs is vanadium, not iron!

Wang Ji now has a good chemical foundation, but after hearing what Li Zexuan said, he still couldn't keep up with the vanadium technology theory. He stayed in place for a long time, and finally some reacted, and then nodded. : "Since the mountain leader has a solution, Wang will do it! But he also asked the mountain leader to guide him~!"

An old man in his forties or fifties asked a teenage boy for guidance. This scene is so weird, but Wang Ji's tone when he said this was taken for granted, without any awkwardness!

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

"Hmm! Okay! Let's start then~!"

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 now completely in love with the taste of Shenxian tea!

If someone brought him a cup of tea soup of the previous kind at this moment, he would definitely let someone pour it directly! Because the previous 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 read clearly, "Drinking can invigorate, relieve fatigue, and help digestion. , Delay aging", yes, he valued 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 this kind of thing Li Zexuan certainly wouldn't talk nonsense, so he chose to believe it! What's more, the taste of Shenxian tea itself is so good, why does he not like 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 production of free radicals and activate the body's antioxidant enzyme system; research It shows that the antioxidant activity of tea polyphenols is significantly better than that of vitamin E, the anti-aging effect is 18 times stronger than that of 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.

Empress Changsun smiled and said: "The tea soup brewed from this tea has a clear color and a smooth taste. In the mouth, the tea fragrance is endless, and this tea soup can reduce fatigue and delay aging. With these, the concubine thinks It's not an exaggeration to call it Shenxian Tea!"

Li Er smiled and couldn't comment.

Concubine Yin, who was sitting across from him, brightened her eyes, and quickly asked Empress Longsun, "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?

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

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

Changle, who was next to him, said with a smile at this time: "After Xiaoxuan Brother Xiaoxuan supplies the fairy tea to the palace, Changle will definitely drink tea every day!"

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

Li Er also looked at his daughter with a funny expression on his face.

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

As soon as this remark came out, it caused laughter everywhere, and for a while, the garden was so warm.

After a while, Zhao Song came over and said something in Li Er's ear. Li Er's eyes flashed, and then he got up and said: "I have something to deal with, Changle and Chengqian, you can drink with your mother. tea!"

"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 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 sergeants back this morning. Lan Tian, ​​all in rags, 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 can happen to them 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 right now, and he must be refining the ore brought back by his 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 extract ores. 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~www.readwn.com~Li Zexuan finally got grey-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 is basically OK. I'm sure 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!

For the lord, the black and red plum party’s million rewards plus 6/10

Shortage -1=17

(End of this chapter)