Introduction of aluminum
Although the reserves of aluminum in the earth’s crust are more than iron, the production process of aluminum is more complicated than that of iron. Aluminum is a relatively active metal element. The smelting process requires electrolysis. Carbon cannot be used to reduce aluminum, but carbon is used. Can reduce iron. The cost of carbothermic reduction is significantly lower than that of electrolysis, which consumes much electricity, so the cost consumed in the entire production process is higher than that of iron. Therefore, aluminum is obviously more expensive than iron, so it is more expensive, so the price of aluminum is higher than that of iron.
Features of aluminum cans
The advantages of aluminum cans are that they are not easily broken, light in weight, and opaque. Common carbonated beverages (Cola, beer, etc.) on the market use aluminum cans because aluminum cans are not easily corroded by acid, and aluminum cans are easy to form, and the manufacturing cost is relatively low. The pressure in soda is greater than normal pressure, so there is no need to worry about deformation under the action of pressure. Moreover, the aluminum can can ensure the pressure of carbon dioxide in the soda, so that the soda has a better taste effect. Therefore, a strong and durable aluminum can is needed to prevent deformation caused during transportation and storage. Aluminum cans are not pure aluminum, but aluminum alloy. Most of the domestic craftsmanship are stamped from aluminum coils, printed on rollers, and equipped with easy-open lids, which are also called two-piece cans in the industry.