PRODUCTION OF ALUMINIUM

STAGES IN ALUMINIUM PRODUCTION

ALUMINIUM PRODUCTIONFLOW CHART

BAYER’S PROCESS

HALL HEROULT PROCESS

BAUXITE

ALUMINA OR ALUMINIUM OXIDE

PURE ALUMINIUM

BAYER’S PROCESS FLOW CHART

BAYERS PROCESS SCHEMATIC ILLUSTRATION

BAYER’S PROCESS CHEMICAL REACTIONS

HALL HEROULT PROCESS FLOWCHART

HALL HEROULT PROCESS SCHEMATIC ILLUSTRATION

HALL –HEROULT PROCESS• In the Hall-Héroult process, aluminum metal is obtained by

electrolytic reduction of alumina.• Pure alumina melts at over 2000°C. • To produce an electrolyte at lower temperature, alumina is

dissolved in molten cryolite at 1000°C. • The electrolyte is placed in an iron vat lined with graphite. • The vat serves as the cathode. Carbon anodes are inserted into the

electrolyte from the top. • The oxygen produced at the anodes reacts with them, forming

carbon dioxide and carbon monoxide. • Therefore, the carbon anodes are consumed and need to be

replaced periodically.• Molten aluminum metal is produced at the cathode, and it sinks

to the bottom of the vat.

HALL –HEROULT CHEMICAL REACTIONS

1 KG OF ALUMINIUM

REFERENCE

• http://www.balcoindia.com/operation/reduction.aspx

• http://www.balcoindia.com/operation/pdf/Aluminium-Production-Process.pdf

• http://www.scs.illinois.edu/~mainzv/HIST/bulletin_open_access/num17-18/num17-18%20p15-19.pdf

• http://en.wikipedia.org/wiki/Bayer_process

• http://www.wisegeek.com/what-is-the-bayer-process.htm

• http://www.youtube.com/watch?v=ZtHF8zyR32Q&spfreload=10

• M.VICKRAM,ABU DHABI,U.A.E.

• PH.NO:00971 55 9330725,

• EMAIL ID:vickramatzenith12@gmail.com.