Otaku Engineer in Great Tang Dynasty

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Yanhuang Academy.

In the conference room of Guanghua Building, Wang Ji was full of excitement, pulling Li Zexuan to go to the workshop.

As the team leader of the Chemistry Department, Wang Ji has the most thorough research on several "Chemistry" textbooks compiled by Li Zexuan. No one understands the important role of sulfuric acid better than him. It can be said that in the "Chemistry" textbooks written by Li Zexuan, a considerable part of the chemistry All reactions are directly or indirectly related to sulfuric acid.

As early as last year, Wang Ji made dilute sulfuric acid from green alum through his own exploration, but that method can be used to produce dilute sulfuric acid in a small amount.

Later, Li Zexuan introduced him to the method of using vanadium pentoxide as a catalyst for sulfur dioxide to be heated in the air to generate sulfur trioxide, and then to prepare concentrated sulfuric acid. Think of this waiting 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 soon came to the ironworks of the workshop.

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

So Wang Ji looked at Li Zexuan and asked, "Master, how should this ore be refined so that the vanadium in it can be extracted~?"

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

"This vanadium titanomagnetite mainly contains oxides of metals such as iron, vanadium, titanium, chromium, cobalt, etc. We can put it into an iron-making blast furnace, mix it with soda ash for roasting, at high temperature and sodium salt As an additive, the lattice structure of the vanadium-containing silicon-oxygen tetrahedron and silicon-oxygen tetrahedron in vanadium titanomagnetite will be destroyed, and the vanadium will be exposed and transformed into pentavalent vanadium;

After that, the sodium ions in the soda ash react with it, and the resulting sodium vanadate salt is soluble in water, while the residues of other impurity metals are insoluble in water, so we can hydrolyze the coarse vanadium by water leaching, and then filter out impurities, from Precipitated vanadium salts in the solution! The refined vanadium salt is then precipitated and calcined to obtain the catalyst we need, vanadium pentoxide! "

The method he said is called the vanadium extraction process by adding salt roasting in modern times. In comparison, sodium chloride has the best roasting effect, but sodium chloride will undergo redox reaction at high temperature to generate chlorine gas, which will seriously pollute the atmosphere, so Li Zexuan did not choose this plan!

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

However, 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 other metal components are directly filtered out as residues, especially iron, you must know the iron content of vanadium-titanium magnetite As high as 20 to 30 percent, while the vanadium content is less than 2 percent!

So this vanadium extraction method 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 foundation in chemistry, but after listening to Li Zexuan's theory of the vanadium extraction process, he still couldn't keep up with it. : "Since the mountain chief has a solution, then Wang will do it! But I also ask the mountain chief to guide me~!"

An old man in his 40s or 50s asked for guidance from a teenage boy. This scene, how strange it is, but Wang Ji's tone when he said this is a matter of course, without any awkwardness!

The master is the teacher, and he believes that he is far inferior to Li Zexuan in chemistry!

"Well! Good! Let's start~!"

Li Zexuan nodded and said.

………………………………

Li Zexuan immersed himself in scientific research here. In Chang'an City, in the palace, Lao Li, who had left the early dynasty, was enjoying tea with his family in the garden of Xiyuan.

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

If someone brought him a cup of the tea soup from before, he would definitely have it poured! Because the previous tea soup is simply rubbish compared to this fairy tea!

In addition, Lao Li deeply remembered that when Li Zexuan brought him fairy tea that day, he also gave him a note, which clearly read, "Drinking it can refresh your mind, reduce fatigue, and help digestion. , to delay aging", yes, he valued the words "delayed aging"!

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

In fact, drinking tea can delay aging, this Li Zexuan really did not lie to Li Er. Because tea polyphenols in tea have an inhibitory effect on various oxidase, it can efficiently scavenge free radicals, which is the fastest antioxidant pathway. At the same time, it 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 aging effect is 18 times stronger than that of vitamin e, and it has a synergistic effect with vitamin c and e.

But if you want to live on tea leaves, Li Zexuan can only tell Lao Li, "You think too much." If this tea is really so bad, wouldn't all those tea sellers in modern times make a fortune?

"Haha! Maid of Goddess of Mercy, you said that Li Zexuan is really a big guy, and he actually named this tea immortal tea?"

Li Er took a sip of tea and said comfortably.

Empress Zhangsun smiled and said: "The tea soup brewed from this tea is bright in color and smooth in taste. The fragrance of the tea is lingering in the mouth, and this tea soup can also reduce fatigue and delay aging. With these, the concubine thinks that It is no exaggeration to call it Immortal Tea!”

Li Er smiled and couldn't deny it.

Concubine Yin, who was sitting across from him, her eyes lit up, and she quickly asked Empress Zhangsun, "Sister, can this fairy tea really slow down aging?"

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

The Empress Changsun smiled lightly: "This is just what I heard from the Marquis of Yong'an. Whether my sister believes it or not, then it's up to you!"

Concubine Yin smiled and said, "The Marquis of Yong'an is young and has both civil and military skills. Since he said that, there will be no fakes. I just don't know when he will be able to supply a large amount of this fairy tea to the palace!"

Next to Changle, Zhanyan smiled and said: "After Brother Xiaoxuan supplies the immortal tea to the palace, Changle must drink tea every day!"

Li Chengqian said speechlessly, "How old are you, Changle, that you want to delay aging?"

Li Er also looked at his daughter with a funny and doting face.

Seeing Changle smiling sweetly, he said, "Changle doesn't want to grow up, so that he can always be by his father's side, mother's queen, and prince's brother!"

As soon as this statement came out, it immediately caused laughter all over, and for a while, the garden was so warm.

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

"Yes! Father!"

Chang Le and Li Chengqian hurriedly got up.

Li Er nodded and took Zhao Song out of the Xiyuan.

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

Leaving Xiyuan, Li Er asked aloud while walking.

Zhao Song bowed slightly and said, "Yes, Your Majesty! At the beginning of the year, the Marquis of Yongan sent his servants to look for mines in Shu, and there were not a few people who knew about it. This morning, his servant brought a few sergeants back home. When I arrived at Lantian, I was dressed in rags and was very embarrassed!"

Li Er frowned and said, "Did they encounter robbers on the road? Or did they encounter an accident in Shu? But they were holding Li Zexuan's fish charm, what could happen to them in Shu? Could it be that the situation in Bashu has changed?"

Thinking of this, Li Er's face became extremely grim. After all, Tang Dynasty had just experienced a rebellion, so he couldn't help being careless!

Zhao Song's face sank and he did not dare to answer.

Li Er continued to ask: "Where is Li Zexuan now? How can he still sit and live when his subordinates are so wronged?"

Zhao Song replied: "Go back to Your Majesty, Yongan Hou is in the workshop right now, he must be refining the ore brought back by the servants!"

"Oh!"

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

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

Li Er waved his hand and smiled.

…………………………

the other side.

After nearly three hours of hard refining, Li Zexuan finally got the gray-black flaky vanadium pentoxide!

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

At this time, Li Zexuan and Wang Ji had already put on "masks", and Wang Ji asked, pointing to a mass of gray-black sheet-like objects.

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

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