Chapter 1426 Hydrometallurgical Smelting, the Motor Is Successful!

Remember in one second [End of the God Station] Mobile phone user input address: m.xinwanben.com

"Master, I have another question!"

In the laboratory, Mo Lingwei frowned and asked, "Since we need DC power so much, and the light bulb can be lit with DC power, why didn't we directly use DC generators to generate electricity?"

Hearing Mo Lingwei asking this question, Li Zexuan couldn't help but praise this girl for her intelligence, he thought for a while and said, "Miss Mo, have you ever thought about this question, if the electricity from the hydropower station is direct current, then it How much voltage will be attenuated over a mile of wire?

You must know that the longer the length of the same thickness of wire, the higher the resistance, and the greater the voltage division. Assuming that the output voltage of the hydropower station is 200 volts, if it is transmitted to a place one mile away, the voltage is likely to be only 150 volts. Volt or so, further away, the voltage will be lower!

And the lights produced by our workshop have the same calibration voltage. If DC power is used for transmission, the place far from the hydropower station will not be able to obtain enough voltage to light the lights!

If it is transmitted with alternating current, this problem will not exist, because we have a transformer, and in a place far away from the hydropower station, we can use the transformer to boost the voltage to increase the voltage to the value we need. And DC is not as easy as AC to convert voltage!

Besides, Miss Mo, you should also know that the internal structure of an alternator is simpler than that of a DC alternator, and its lifespan is longer than that of a DC alternator. Therefore, I have chosen the transmission of AC power after considering various aspects. Program! "

In fact, the battle between AC and DC, even in modern times, does not end only when AC wins. As far as the power system of the 21st century is concerned, high-voltage power transmission is a situation in which AC and DC coexist and complement each other. Even, with the development of power electronics technology, DC power transmission may also strongly return to its dominant position again, because DC power only needs to be in the transmission process. Consider the loss caused by line resistance, and in the transmission process of alternating current, impedance, inductive reactance, and capacitive reactance will all cause losses to the transmitted power!

However, as far as the current technical conditions of Datang are concerned, choosing alternating current for transmission is the most feasible and economical solution!

Mo Lingwei suddenly realized when she heard the words, she nodded and said with admiration: "I didn't expect that there is such a great knowledge here. When the chief of the mountain built the hydropower station, he was really far-sighted!"

Li Zexuan smiled and didn't answer, but looked at Wang Ji and asked, "Mr. Wang, I believe the problem of the DC power supply can be solved in a few days, but I don't know if your various raw materials and equipment are ready. already?"

Wang Ji nodded and said, "Don't worry, the old man, everything is ready, the only thing I owe is Dongfeng! The electrolytic cell, crude copper, and alum are all ready!"

Li Zexuan was surprised: "Oh? The progress is so fast? Mr. Wang, can you prepare enough bile?"

After all, there will be a lot of copper that the workshop will refine in the future, so Li Zexuan must ask in advance.

Wang Ji smiled and said, "You can rest assured, Chief, this bile is not a rare thing. There is a mine in Lantian County that produces bile, which is enough to supply our workshop with refined copper!"

Li Zexuan heard the words and said in surprise: "What? Is there a bile mine in Lantian County? Why didn't I know?"

Wang Ji said strangely: "This bile ore has always been there! But this thing is only used in medicine, and it is not very valuable. It is normal for you not to know about it, Lord Hou!"

Bile alum, that is, copper sulfate crystals, can also be used as medicine. It can stimulate the gastric mucosa and cause the vomiting center to excite and induce vomiting. It is used for wind-phlegm congestion, throat paralysis, epilepsy, ingestion of poisons, mouth sores, jaundice, red rotten eyes, sores, pterygium, swollen toxins, etc.

Li Zexuan hurriedly interrupted: "Who said it's worthless? This alum can not only be used to extract crude copper, but also electrolytically refined copper by using electricity as an electrolyte. Solve our current copper shortage dilemma!"

"Copper is made from bile vitriol? How can copper be extracted from bile vitriol? Oh, yes! This is indeed possible. Ge Xianweng mentioned in "Baopuzi Nei: Huangbai" that he soaked iron sheets with bile vitriol solution to obtain copper In chemistry, this is called a displacement reaction! Eh! Why didn't I think of this~?"

Wang Ji was puzzled at first, then patted his head and said angrily.

There are two ways to extract copper - pyrometallurgy and hydrometallurgy. Among them, fire copper smelting is to contact malachite with ignited charcoal to be decomposed into copper oxide, which is then reduced to metallic copper. The equation is cuco3.cu(oh)2+c==2cu+2co2+h2o!

This is also the main way of producing copper in China before the Song Dynasty!

Copper hydrometallurgy is also called bile copper method, and its production process mainly includes two aspects. The first is copper immersion, that is, the iron is placed in a bile vitriol (cuso4 5h2o) solution (commonly known as bile water), so that the copper ions in bile vitriol are replaced by metals and deposited with elemental copper; the second is to collect, the copper that is about to be replaced The powder is collected, then smelted and cast.

The Chinese first used natural copper compounds to smelt copper by hydrometallurgy. In the Western Han Dynasty, sulfuric acid was used to react with copper oxide, and then copper was replaced with iron. In Liu An's Huainan Wanbishu, "Zeng Qing turns iron into copper", and "Zeng Qing" refers to soluble copper salt, that is, copper is formed when copper salt encounters iron.

Jin Gehong's "Baopuzi Inner Chapter: Yellow and White" also has a record of "painting iron with Zeng Qing, and the iron is as red as copper". During the Northern and Southern Dynasties, it was further realized that not only copper sulfate, but also other soluble copper salts could undergo displacement reactions with iron.

But these methods are just the accidental discoveries of the alchemists in the process of alchemy, and they are not really used.

in production! It was not until the end of the Tang Dynasty and the Five Dynasties that the principle of hydrometallurgical copper smelting began to be applied to production. In the Song Dynasty, it developed into one of the important methods for mass production of copper.

In the early Tang Dynasty, very few people knew about copper hydrometallurgy, let alone used it in actual production!

Seeing Wang Ji's reaction, Li Zexuan nodded and said, "That's right! This bile alum is used to make copper by chemical substitution reaction! I'll send someone to find the mine you mentioned, Mr. Wang, and find out the inside as soon as possible. After the reserves of bile alum, we can excavate bile water tanks around the mine, forge iron into thin sheets and arrange them in the grooves, immerse the iron sheets with bile water, and the copper in bile alum will adhere to the surface of the iron sheets.

Although it is more troublesome to forge iron sheets into thin slices, but our workshop now has a hydraulic stamping machine, so this is not a trouble! In addition, forging iron into thin slices can increase the surface area of ​​iron, greatly shorten the replacement time, and improve the yield of copper. It is hoped that the copper produced by this mine can fully supply the consumption of power lines in Lantian County! "

A while ago, he was still worrying about where to get some copper. He didn't expect that there would be a bile alum mine on his own fief. People in this era obviously haven't realized the real use of the bile alum mine, or else This mine has been requisitioned and mined by the imperial court for a long time, and it will not wait until now!

Hearing this, Wang Ji couldn't help but sigh with longing and emotion: "If the reserves of bile in this mine are really amazing, we can cover the entire Lantian County with electric wires~! This kind of grand scene, Wang's dreams are all in it look forward to!"

……………………

After leaving Mo Lingwei's laboratory, Li Zexuan immediately sent Liu Feng and Liu Yun to lead people to inspect the bile vitriol mine. After that, he went to the edge of the Bahe River to check the progress of Zhang Hongsheng's armor manufacturing. Zhang Hongsheng asked Li Zexuan to It is guaranteed that the first set of plate armor will be made by the day after tomorrow at the latest. After the first set is made, the production speed will be faster and faster!

"Master, yesterday the old man made a batch of iron pieces of the same size and thickness with a hydraulic punching machine. With these iron pieces, the chain you mentioned before can be made. The old man has arranged for craftsmen to assemble the chain. It is expected that tomorrow It can be done! After you have the chain, are you planning to build the second-generation chain-driven bicycle, Master?"

Fu Bo was also on the side of the hydropower station. Seeing Li Zexuan coming to "inspect the work", he hurried over and said.

Li Zexuan was overjoyed when he heard the words. He said with a smile:

"Build it! Build it quickly! The sooner the better! Oh, by the way, Forber, you can imagine the structure of this chain-driven bicycle, even if I don't give you the drawings?"

Uncle Fu nodded and said, "Don't worry, young master, this old man has a good idea. This second-generation bicycle is only different in transmission mode from the first-generation bicycle. The other parts are basically the same, and this is not difficult for the old man!"

Li Zexuan said excitedly: "Hehe! That's good! I'll just wait for the good news of Fu Bo! The bicycles in the past have created huge profits for our workshop. The brisk second-generation bicycle, I believe more people will like it and are willing to spend money on it! In the near future, the bicycles produced by our Qiquge workshop will surely spread all over the big river in the Tang Dynasty!"

Last year, because he didn't have a dam or a hydraulic punching machine, he couldn't build a chain, so he could only build an "ancient" bicycle with pedals on the front wheel. This kind of bicycle was laborious to ride and easy to fall over. Li Zexuan just It felt fresh at first, but after a few days of riding, he never rode again. He is a modern person, and any bicycle he has ridden is 10,000 times better than that "ancient" bicycle!

However, the "indigenous people" of the Tang Dynasty like Cheng Yaojin didn't know that there were better bicycles in this world. They only knew that the bicycles produced by the Qiquge workshop were faster, more flexible and more convenient than horse carriages. Ride out every day.

Now that there are chains, everything is different. Li Zexuan can not only produce bicycles with chain-driven rear wheels, he also wants to build some mountain bikes with disc brake shifting function, and even he wants to make electric...

This improved bicycle is believed to not only replace carriages, but even horses!

……………………

Day two.

The first thing Li Zexuan did after breakfast was to go to the medical center. Dr. Wang saw Li Zexuan coming, and quickly reported:

"Shan Chang, this time we have recruited fifty-eight doctors with superb medical skills and high medical ethics, including eight female doctors and fifty male doctors. Among them, some are good at bone setting and treating bruises. Injuries, there are also those who are good at treating diseases of young children, and even more good at acupuncture and massage, anyway, in the departments we divided before, there are doctors who can do it!"

Li Zexuan nodded and said, "That's very good! The medical center should start normal operation as soon as possible, and be fully open to the people of Lantian County. All the prices of medicinal materials and consultation fees must be open and transparent, and the people cannot be deceived! In addition, the number of female doctors is still too small compared to male doctors. As I told you before, doctors do not distinguish between men and women. In the eyes of doctors, there should be no concept of gender. Don't just because someone is a woman. Look down on the other's medical skills, yesterday's Ge Qingyue is a good example! We will recruit more female doctors in the future!"

Li Zexuan heard that in yesterday's interview and assessment, Ge Qingyue "smiled to be proud of the crowd" with a double perfect score. I don't know how many people's attention has been stunned. Li Zexuan felt that Ge Qingyue could be used for women who are interested in medicine in the world. Be a role model and tell the world that women can also learn and practice medicine, and their medical skills are no worse than men!

Dr. Wang cupped his hands and said, "Master Shan, after yesterday's interview and test

Hehe, but no one dares to despise female doctors anymore. The reason why there are only eight female doctors is because there are too few female doctors who have come to apply! But today, "Datang Daily" published a notice that our United Medical Center can recruit female doctors. I believe that soon, there will be female doctors with superb medical skills who will come to our hospital! "

Hearing this, Li Zexuan nodded and said, "That's good! If there is any difficulty in the future for the medical center, Dr. Wang, you can just tell the magistrate He, or you can tell me. If you can help, the magistrate and Ben Hou will definitely be there. Do your best to help!"

"Yes! Mountain Chief!"

……………………

In the afternoon, Li Zexuan rode to the workshop again.

Because he got the news, Mo Lingwei's electric motor and the second-generation chain bicycle supervised by Fubo are all ready!

"Shan Chang, this is the electric motor. As long as it is connected to the battery, the rotor inside can spin rapidly!"

In the Qiqu Pavilion workshop, Mo Lingwei pointed to the "bump" of iron on the ground and said.

Li Zexuan frowned and had to admit that the appearance of this motor was a bit ugly. The casing should have been directly cast, and the surface was not polished, quenched, or painted. It was just as ugly as it was ugly. , I just don't know if this ugly thing can be used normally!

"Pick up the phone and I'll take a look!"

Li Zexuan said softly.

"Um!"

Mo Lingwei responded and hurriedly called Song Xiaosi next to him to bring a lead-acid battery from Wang Ji's place.

Since Yan Shaoning hurriedly went home yesterday, she has not come until now. Mo Lingwei has no one to call, so she can only call Song Xiaosi!

After the lead-acid battery was brought over, Mo Lingwei placed the motor upside down and asked Song Xiaosi to stabilize it. Then she went to connect the power supply by herself. It spins quickly!

"Success! Succeeded! We changed the way of power in this era!"

Li Zexuan looked at the motor that was spinning wildly, and said with emotion.

………………

Support (end this site) and share this site with those who need it! Can't find the book, please leave a message!