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Chapter 1717 The second self-produced metal

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    After this day's investigation, Major Cromlin felt his eyes widened.  In the past, I didn't understand it very carefully, but now I finally see that the Chinese are smart.  Although their technical conditions are backward, they can adapt to local conditions and exert their various abilities. He admires the ingenuity of the Chinese people very much.

    That night, Major Cromlin boarded the plane and started the return journey.  He knew that this was not the end, but just the beginning.  In the future, such actions will become more intensive and more common.  When he thought of what he saw and the technological progress of the Eighth Route Army, he felt very urgent. He wanted to report what he saw here as soon as possible.  Major Cromlin was very surprised to see something new every time.

    More equipment can be handed over to the Eighth Route Army, and they can complete aircraft maintenance and repairs, etc., reducing the number of Americans in the Eighth Route Army's base areas, which can also reduce American losses.

    After seeing off this group of people, Qin Baoshan was also satisfied. He watched Xiong Da, Lu Da and others finally install the equipment supported by the United States.  Because the United States supported a large generator with sufficient power, the electrolytic aluminum equipment was installed in a courtyard near the airport.  This facilitates the use of excess power from the generator.  This is a large diesel generator.  The Eighth Route Army can provide the required fuel itself, so everything is very convenient.

    "Director Qin, you are here." Lu Da said to Qin Baoshan, "We have full confidence that we will be able to succeed in one go."

    "Yes, this is the second type of metal produced by our military factory." Xiong Zheng said aside: "Director Qin, you are really amazing. All these equipment can be obtained from Americans. Our  The things on the list will be available soon, and I am excited just thinking about it."

    "Well, we are going to manufacture a metal that was once very precious." Qin Baoshan said: "The tableware used by Napoleon back then."

    When he said this, both Lu Da and Xiong Zheng were surprised: "Director Qin, do you still know about this kind of thing?"

    The distribution of aluminum in nature is very wide, and the element of aluminum ranks third in the content of the earth, even more than iron.  Ordinarily, with such a common element, it should be easy for humans to use it.  In fact, aluminum products appeared very late.  The first metal used by humans was copper, then iron, what about aluminum?  It never appeared in ancient times, and it only began to appear in modern times. At the beginning, it was quite expensive, and it was not affordable for ordinary people.

    In that year, after Lavoisier pioneered the quantitative research of chemistry, it was discovered that alum contained an unknown element.  Aluminum trioxide was first extracted in 1754, also known as bauxite.  Aluminum compounds are shown in front of human beings, but how to separate aluminum has become a big problem.

    There is no elemental aluminum in nature, because aluminum is too active, and it is very easy to form compounds with other elements. The common aluminum oxide has a melting point of over 2,000 degrees Celsius. In order to obtain elemental aluminum, scientists can only go around a big circle, through complex  The way to convert alumina into aluminum chloride, because the melting point of aluminum chloride is only two hundred degrees.  However, in smelting, chlorine gas is used, which is not easy to obtain, and requires the use of expensive metal sodium and potassium, and the whole process is very dangerous.

    The final elemental aluminum is much more valuable than metallic silver. Therefore, Napoleon used aluminum tableware to eat, which was a symbol of nobility. Mendeleev invented the periodic table of elements, and the medal he got was also made of aluminum.  .

    The cost of aluminum has been reduced thanks to the American Hall and the French Heyrou, who have improved the production process: since alumina itself is difficult to melt, it is simply blended into a new solvent. After repeated research, finally  Found cryolite as a solvent, dissolved alumina, and then electrolyzed to produce aluminum.

    At this time, it was already the end of the nineteenth century. In the following two decades, the production cost of aluminum dropped significantly and became a commonly used metal. If it were not for the emergence of electrolytic aluminum technology, the performance of the aircraft would not be possible.  Got promoted.

    "Okay, we can start the experiment." With an excited expression, Lu Da solemnly turned on the power switch.  The electrolyzer supported by the Americans finally started working.

    The electrolytic aluminum tank is made of steel-lined graphite as a whole, and the graphite anode is on it. At the same time, alumina has been added from the top, and the cryolite that bears the solvent is placed in the middle of the electrolytic tank. With the input of current,  Subtle changes began to occur inside. By means of electrolysis, liquid elemental aluminum was gradually enriched at the lower end of the electrolytic tank, that is, near the cathode, so that the molten aluminum was drawn out from the conduit through a collection tank.

    At this time, looking at the molten aluminum continuously flowing out of the electrolytic tank, Qin Baoshan¡¯s?It is also beating more and more violently.  In addition to being able to produce steel, the Eighth Route Army is now finally able to produce a second metal material.  The role of this metal material is quite large, it can be used to make wires and used in various circuits, and the Eighth Route Army has entered the era of electrification.  These wires can also be used to wind motors. Although they are not as good as copper wires, they are also good as an alternative.  Even, the aluminum they produce is doped with certain metals to form an aluminum alloy, which can then be cast into a piston as a component of the engine.  Qin Baoshan's idea of ??producing engines will gradually become a reality.  Although there is still a long time before the real mechanized troops, even if the simplest engine can be produced and equipped with a batch of paragliding parachutes, that is a great progress.

    "His grandma's, what's that coming out of it? Why does it look like silver?" At this time, Li Yunlong heard that there was a lot of excitement here, so he also ran over. When he saw the white metal inside, he instantly  Surprised, I thought it was silver!  This kind of thing is old and valuable.

    Facing Li Yunlong's question, Qin Baoshan smiled and said, "Old Li, this thing was worth much more than silver in the past."

    Li Yunlong was not coaxed by Qin Baoshan's simple words, and immediately asked Qin Baoshan: "What about now? Is it more expensive than silver now? By the way, what can this thing do?"

    Hearing Li Yunlong's question, Qin Baoshan smiled: "Well, I can get you a lunch box and a water bottle."

    Qin Baoshan really didn't fool Li Yunlong, aluminum products can be used in the army.  After liberation, aluminum lunch boxes and aluminum kettles were very popular in the army.  This thing is very light and durable.  Now, give Li Yunlong a try.  (Remember the site URL: www.hlnovel.com
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