In the 19 th century the production process was so expensive and available quantities so small that aluminum was a precious metal ($1200/kg in 1852). Indeed, Napoleon III emperor of France had a baby rattle and some other small objects made of it, and a story tells that during a banquet the most honoured guests were given aluminum utensils, while the other guests were given gold utensils.
Aluminum is the most abundant metal in the earth's crust and is a constituent of many minerals. However, the material which is highest in aluminum and most free from objectionable impurities is bauxite which, therefore, is practically the only source of the metal under present processes.
Aluminium Production Technology . The Hall- Heroult process is an example of Aluminium smelting process and is used industrially. Aluminium cannot be produced by an aqueous electrolytic process because hydrogen is
Aluminium can be easily recycled at low cost (using about 5% of the energy required for primary production) and approximately 60% of European consumption is recycled metal. It has even been estimated that two-thirds of all the aluminium manufactured since commercial production started in1886 is still in use today.
Quick Read. Primary production is the process by which alumina is smelted to pure aluminum metal. The Hall–Héroult process, simultaneously discovered in 1886 by American Charles Martin Hall and Frenchman Paul Héroult, continues as the main industrial process by which primary aluminum is made.
aluminium production process 1. production of aluminium 2. stages in aluminium production 3. aluminium production flow chart bayer's process hall heroult process bauxite alumina or aluminium oxide pure aluminium