Transcript Electrolytic Production of Aluminum

Electrolytic Production of Aluminum
----Vicky Hou
Ivy Zhang
The Properties and Uses of Aluminum
 It had being called “silver
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gold” in hundred years ago
Aluminum is very reactive
There’s no natural pure
aluminum metal
The MP is 660℃
The BP is 2500℃
The density is 2.7g/cm3
Aluminum can be used in
many kinds of industries.
 Aluminum is the most
widely used metal.
 Global production of
aluminum in 2005 was
31.9 million tones
 Aluminum is almost
alloyed, which markedly
improves its mechanical
properties.
 The main alloying agents
are copper(Cu), zinc(Zn),
magnesium(Mg),
manganese(Mn), and
silicon(Si).
 Since aluminum is very
reactive, when aluminum
foil stays in the atmosphere,
it will react with oxygen
and produce a thin Al2O3
film on surface of the foil.
 In China, 113 out of 124
kinds of industries using
the products of aluminum.
Major Uses of Aluminum
 Transportation
 Packaging (cans, foil, etc.)
 Construction (windows, doors, siding, building wire, etc.).
 A wide range of household items, from cooking utensils to
baseball bats, watches.
 Street lighting poles, sailing ship masts, walking poles, etc.
 Outer shells of consumer electronics, also cases for
equipment e.g. photographic equipment.
 Electrical transmission lines for power distribution
What is Electrolytic Production of Aluminum
 It is a way that industry used to
produce pure aluminum metal.
 It start with the impure
aluminum oxide “bauxite”.
Basic Materials
 Alumina
 Flux
+
Cryolite
 Alumina has melting point at 2045℃
 The flux and cryolite are added in order to
lower the melting point of the alumina
Chemical Reactions
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Total Reaction:
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Cathode:
Anode:
Reference
 http://en.wikipedia.org/wiki/Aluminium#General_use
 Shakhashiri, Bassam Z.. "Chemical of the Week: Aluminum".
Science is Fun.
http://scifun.chem.wisc.edu/chemweek/Aluminum/ALUMINU
M.html. Retrieved 2007-08-28.
 Rising Chinese Costs to Support Aluminum Prices Bloomberg
News, November 23, 2009
 Polmear, I.J. (2006). "Production of Aluminium". Light alloys from
traditional alloys to nanocrystals. Oxford: Elsevier/ButterworthHeinemann. pp. 15–16. ISBN 9780750663717.
http://books.google.com/?id=td0jD4it63cC&pg=PT29.