Where does the aluminum used in the broken bridge aluminum door and window equipment come from?

by:kingtool aluminium machinery     2021-09-30
Where does the aluminum used in the broken bridge aluminum door and window equipment come from? Although today's broken bridge aluminum door and window aluminium processing machine uses inexhaustible aluminum raw materials every day, and we also know that it is recyclable, there is still a question, where does aluminum come from? The history of aluminum used in broken bridge aluminum doors and windows equipment is formed by the use of its compound alum. The written record of alum was written by the Greek historian Herodotus in the 5th century BC. The ancients used it as a dye, medicine, chemical grinding, and as a fireproof coating for wood to protect the fortress from enemy arson attacks. The Roman writer Petronius mentioned in his novel 'Satyricon' that an unusual glass was dedicated to the emperor: when it was thrown on the sidewalk, it There is no fragmentation, it's just deformed. Use a hammer to restore it to its original shape. After learning from the inventor that no one knew how to produce this material, the emperor executed the inventor to avoid lowering the price of gold. The Roman historian Pliny the Elder briefly mentioned variations of this story in Natural History (he pointed out that the story was repeated frequently rather than being real) and the Roman historian Cassius-Dior’s History of Rome. Some sources indicate that this glass may be aluminum. During the reign of China's Jin Dynasty (265-420), it is possible that aluminum-containing alloys were produced. After the Crusades, alum became a commodity of international commerce, and it was indispensable to the European textile industry. There are small alum mines in Catholic Europe, but most alums come from the Middle East. Alum continued to trade through the Mediterranean until the mid-15th century when the Ottomans greatly increased their export taxes. A few years later, a large amount of alum was found in Italy. Pope Pius II banned all imports from the East and used the profits from the alum trade to fight the Ottomans. This newly discovered alum has played an important role in European pharmacy for a long time, but the high price set by the pope government made other countries start their own production; large-scale alum mining appeared in other parts of Europe in the 16th century. 322
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