Aluminum is an abundant metal
that comes from Bauxite, an ore that looks like clay and contains aluminum,
along with several other substances. Workman extract the other substances
from the Bauxite by grinding it and putting it in high pressure tanks.
The other substances form a mass which the workman use a filter to remove,
leaving only a liquid remaining. The liquid that remains is put through
several other processes and then yields a powdery white chemical, which
contains aluminum and oxygen, called alumina. Electricity is used by the
workman to separate the aluminum from the oxygen. A light metal is produced.
The metal has bright, silvery luster, comes in many forms and has many
uses. |