Successfully reported this slideshow.
We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. You can change your ad preferences anytime.
Material & energy requirements

Technical University of Crete Mining
Department of Mineral Resources Engineering
Metalurgi...


Aluminum is a light metal with density of
2.7g/cm3 (three times less than of steel) .



It is one of those elements w...
Worldwide Aluminum production in 2010

Source http://www.alueurope.eu/?page_id=1509


In 2010, global Al production is 41,4million tons



Global average energy consumption is 15kWh/kg Aluminum



Thus,
...


Mostly aluminium is produced in two ways;



Primarily Production Process





Bayer process: Bauxite refining
Hall...


Bayer Process: Refining Bauxite



Scrap recycling
 The scrap is cleaned and sorted
 If the scrap contains more than 20% Al by wt.



Aluminum hydroxid...


To produce 1kg of aluminum,







5,900kg earth has to mined
5.1kg Bauxite,
1.93kg alumina and
0.45kg carbon anod...


On the basis of 1kg aluminum
Bayer process

Source: Wang et al.2012


Al from recycled Al(OH)3,

Requires only 43% total energy
of primary Al prod.

Scrap recycling

If Scrap contains >20% ...


Wang H., Leung D.Y.C, Leung M.K.H, 2012, Energy analysis of hydrogen and
electricity production from aluminum-based pro...
Upcoming SlideShare
Loading in …5
×

Presentation ''Production of aluminum''

5,221 views

Published on

(emphasis on energy and materials requirements)

see more on : thanosparaschos.com

Published in: Technology, Business

Presentation ''Production of aluminum''

  1. 1. Material & energy requirements Technical University of Crete Mining Department of Mineral Resources Engineering Metalurgical Processes – Prof. Komnitsas Athanasios Paraschos 2007020037
  2. 2.  Aluminum is a light metal with density of 2.7g/cm3 (three times less than of steel) .  It is one of those elements which are excessive on earth. It is an excellent heat and electrical conductor with very good reflectivity, resistance to corrosion and ductility.  Aluminum is used extensively in electronics infrastructure, packaging and transportation
  3. 3. Worldwide Aluminum production in 2010 Source http://www.alueurope.eu/?page_id=1509
  4. 4.  In 2010, global Al production is 41,4million tons  Global average energy consumption is 15kWh/kg Aluminum  Thus,  Electricity consumption is 621 billion kilowatt hours of electricity  Global electricity production is 20261 billion kilowatt hours  Therefore,  Three percent of the total electrical supply goes to aluminum extraction
  5. 5.  Mostly aluminium is produced in two ways;  Primarily Production Process    Bayer process: Bauxite refining Hall-Héroult process : Reduction of Alumina to Aluminum Secondary Production Process  Recycling of scraps containing Al  Recyling aluminium hydroxide
  6. 6.  Bayer Process: Refining Bauxite
  7. 7.
  8. 8.  Scrap recycling  The scrap is cleaned and sorted  If the scrap contains more than 20% Al by wt.  Aluminum hydroxide  It is a waste from Al production and can be assumed as free of impurities  It is then Calcined directly
  9. 9.  To produce 1kg of aluminum,      5,900kg earth has to mined 5.1kg Bauxite, 1.93kg alumina and 0.45kg carbon anode This means that for 2010 annual world production of 41.1 million tons aluminum,  210 million tons of bauxite,  80 million tons of alumina and  21 million tons of carbon anode
  10. 10.  On the basis of 1kg aluminum Bayer process Source: Wang et al.2012
  11. 11.  Al from recycled Al(OH)3, Requires only 43% total energy of primary Al prod. Scrap recycling If Scrap contains >20% Al (wt.) Source: Wang et al.2012
  12. 12.  Wang H., Leung D.Y.C, Leung M.K.H, 2012, Energy analysis of hydrogen and electricity production from aluminum-based processes, Applied energy 90, 100105  U.S. Department of energy, U.S. Energy requirement for aluminum production: historical perspective, theoretical limits and current practices, February 2007  Totten G.E, Mackenzi D.S., 2003, Handbook of Aluminum, Vol 1,Physical Metallurgy and processes, Marcel Dekker, Inc, USA

×