Aluminum is an abundent metal
that comes in many forms and has many uses. It comes from a claylike ore
called bauxite. Bauxite contains several other substances. To remove these
substances workers grind up the bauxite and place it in presurized tanks.
The other substances form a mass and are removed with filters. After that,
only a liquid remains. After putting the liquid through several other processes,
it finally yields a white, powdery chemical. Workers then separate the
aluminum from the oxygen using electricity. They finally produce a light
metal with a bright silvery luster. |