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5 I
Brief Introduction - History about Aluminum
Before 19
th
century , aluminum is
regarded as a rare precious metal ,
even be more expensive than
gold .The French emperor Napoleon
III even ordered officials to build a
aluminum crown to show his wealth
and power.
With the development of electrolytical
reduction process ,aluminum metal
production started to grow rapidly.
The electrolytical reduction process
was developed and patented in 1886
simultaneously and independently by
Paul Héroult in France and Charles
Martin Hall in the US.