The document discusses electrolytic processes and smelting used in aluminum production. Bauxite ore is first mined and processed through crushing, milling, and the Bayer process to produce alumina. The alumina is then smelted using the Hall-Heroult process where aluminum ions are reduced at the cathode using an electrolytic cell with carbon anodes and molten cryolite as the electrolyte. Heat over 900°C is required for the electrolytic reduction to produce liquid aluminum and oxygen gas. Images and videos show various stages of the aluminum production process.

1. Basanta Kumar Parida
by

2. Electrolytic process
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• DC to drive an otherwise non-spontaneous chemical reaction.
• Electrolysis is commercially important as a stage in the separation of elements from
naturally occurring sources such as ores using an electrolytic cell.

3. Smelter
• Extraction of metals from its ore
• Production of silver, iron, copper, aluminium etc.
• Smelting uses
• Heat
• A chemical reducing agent to decompose the ore
• Driving off other elements as gases or slag
• Reducing agent is commonly a source of carbon such as coke
• The carbon (or carbon monoxide derived from it) removes oxygen from the
ore, leaving behind the elemental metal
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4. Aluminium smelter
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Bauxite Alumina Aluminiumrefinery smelter
Crushing
milling
Bayer’s
process
Hall-Heroult
process
Heat
Power
www.google.com

5. The real process
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𝟐 𝐀𝐥 𝟐 𝐎 𝟑 𝐝𝐢𝐬𝐬𝐨𝐥𝐯𝐞𝐝 + 𝟑 𝐂 𝐬 𝟒 𝐀𝐥(𝐥𝐢𝐪) + 𝟑 𝐎 𝟐(𝐠𝐚𝐬)
Electrolytic reduction not aqueous electrolyte process
Na3AlF6+AlF3
Heat >900o C
Requirement-
Electrolyte
Anode
Cathode

6. Graphical info.
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7. Details of production
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13.460

8. Real image
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9. Video crust breaking
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10. Video anode change
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11. End product
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