Electrodes used in extraction of aluminium
- how is electrolysis used to extract aluminium
- why is electrolysis used to extract aluminium from its ore
- why is electrolysis used to extract aluminium but not iron
- how is aluminium extracted by electrolysis
Extraction of aluminium pdf.
Why is the extraction of aluminium expensive
Electrolysis and extraction of aluminiumExtracting aluminium
Aluminium is the most abundanceIf there is a lot of something, it is described as being abundant. metal on Earth, but it is expensive, largely because of the amount of electricity used in the extraction process.
Aluminium oreA rock containing enough quantities of a mineral for extraction to be possible.
is called bauxite (Al2O3). The bauxite is purifiedA substance that has been separated from other substances is said to be purified.
Why is electrolysis used to extract some metalsto yield a white powder – aluminium oxide (also known as alumina) – from which aluminium can be extracted.
The extraction is done by electrolysisThe decomposition (breakdown) of a compound using an electric current., but first the aluminium oxide must be melted so that electricity can pass through it.
However, aluminium oxide has a very high melting point (over 2,000°C) so it would be expensive to melt it.
Instead, it is dissolveWhen something is broken up in a liquid and no longer exists. in moltenA term used to describe a liquid substance (eg rock, glass or metal) for
- why can aluminium only be extracted by electrolysis