aluminium production process

1. PRODUCTION OF ALUMINIUM BY VICKRAM.M M.TECH/MANUFACTURING MANIPAL UNIVERSITY,DUBAI

2. STAGES IN ALUMINIUM PRODUCTION

3. ALUMINIUM PRODUCTION FLOW CHART BAYER’S PROCESS HALL HEROULT PROCESS BAUXITE ALUMINA OR ALUMINIUM OXIDE PURE ALUMINIUM

4. BAYER’S PROCESS FLOW CHART

5. BAYERS PROCESS SCHEMATIC ILLUSTRATION

6. BAYER’S PROCESS CHEMICAL REACTIONS

7. HALL HEROULT PROCESS FLOWCHART

8. HALL HEROULT PROCESS SCHEMATIC ILLUSTRATION

9. 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.

10. HALL –HEROULT CHEMICAL REACTIONS

11. 1 KG OF ALUMINIUM

12. 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

13. M.VICKRAM,ABU DHABI,U.A.E. PH.NO:00971 55 9330725, EMAIL ID:[email protected]. THANK YOU ALL