Aluminium Metal
Aluminium is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, soft, non-magnetic, ductile metal in the boron group. Aluminium is remarkable for its low density and ability to resist corrosion through the phenomenon of passivation. In addition, aluminium is an excellent conductor of electricity and heat.
Aluminium is obtained primarily from bauxite ore, which contains about 50% alumina (aluminium oxide). The process involves extracting alumina from the bauxite ore, followed by electrolytic reduction of alumina to produce aluminium metal. The primary production of aluminium requires large amounts of energy, making it an energy-intensive industry.
Aluminium has many uses due to its unique properties. It is used in the construction industry for making windows, doors, roofing, and siding due to its light weight and corrosion resistance. It is also used in transportation industries, such as in the manufacture of aircraft frames, car bodies, and bicycle frames.
Aluminium is also used in packaging, such as beverage cans and foil, due to its barrier properties that protect food and beverages from moisture, light, and air. It is also used in electrical wiring and electronics due to its excellent electrical conductivity and thermal conductivity.
Despite its many advantages, aluminium can be harmful to human health if ingested or inhaled in certain forms. For example, aluminium can accumulate in the brain and may be associated with Alzheimer's disease. Therefore, precautions are taken to minimize exposure to aluminium occupational settings and consumer products.