Aluminum | Minerals that changed history

Release time:

2020-05-09 17:11

As we all know, the content of aluminum in the earth's crust is second only to oxygen and silicon, ranking third, and is the most abundant metal element in the earth's crust. The chemical symbol for aluminum is Al, which is in Group IIIA in the periodic table, with an atomic number of 13, a relative atomic mass of 26.982, and a relative density of 2.70. Melting point 660 ℃. Boiling point 2327 ℃.

In daily life, aluminum products are ubiquitous. Civil, military, construction, transportation, transportation, electricity, machinery and other fields can see the figure of aluminum, and even aluminum products tableware in China's cooking utensils production accounted for 70%. However, more than 100 years ago, anything that was associated with aluminum was a very precious treasure. The price of aluminum was higher than that of gold, which was called "silver gold".

But do you know the origin of aluminum?

Legend has it that one day in ancient Rome, a stranger went to visit the Roman emperor Tiberius and offered a metal cup. The cup shone like silver, but the weight was very light. It's this man's new metal from clay. But the emperor, ostensibly grateful, feared that the glorious new metal would devalue his treasure, and ordered the inventor to be beheaded. Since then, no one has ever touched the idea of refining this "dangerous metal", this new metal is now very familiar with aluminum. The word aluminum is derived from the ancient Roman word alumen (alum).

The French Emperor Napoleon III, in order to show his wealth and dignity, ordered officials to make himself a crown more precious than gold-the aluminum crown. He put on the aluminum crown and accepted the pilgrimage of a hundred officials with great dignity, which was sensational news. When Napoleon III held a grand banquet, only he used a set of aluminum tableware, while others could only use gold and silver tableware. Even in the chemical world, aluminum is considered the most valuable. In recognition of Mendeleev's outstanding contribution to chemistry, the Royal Society made an aluminum cup and gave it to Mendeleev. Russian writer Chernyshevsky once wrote in his novel "What to Do": One day, aluminum will replace wood, and perhaps even stone. Look, how extravagant it all is, aluminum everywhere.

Russian writer Chernyshevsky (Chernyshevsky) once wrote in his novel "What to Do" (1863): One day, aluminum will replace wood, and possibly even stone. Look, how extravagant it all is, aluminum everywhere. In 1889, when Mendeleev was in London, in recognition of his great service, he was given a valuable prize-a balance made of gold and aluminum.

In fact, these are not surprising, because the value of aluminum depends entirely on the level of the aluminum smelting industry. As aluminum production increases, aluminum prices fall. In 1854, 1 kilogram of aluminum cost 1200 rubles, but by the end of the 19th century it was reduced to 1 ruble. Obviously, jewelry merchants have completely lost interest in aluminum, but aluminum immediately attracted the entire industrial world.

In 1818, the first aircraft was made of aluminum alloy. Since then, the fate of aluminum has been firmly linked to the aircraft industry. Aluminum is known as "metal with wings".

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