Anode Baking : Process Description





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Home About Metals Advisor Help IRON AND STEEL Overview PROCESSES Agglomeration Coking Blast Furnace Direct Reduction Basic Oxygen Furnace Electric Arc Furnace Heat Treating Ladle Metallurgy Continuous Casting Ingot Casting Ladle Preheating Secondary Finishing Surface Coating ALUMINUM Overview PROCESSES Mining/Primary Processing Recycle/Scrap Melting Aluminum Casting Aluminum Smelting Anode Baking Bauxite Mining Bauxite Refining Extrusion Forging Heat Treating Molten Handling Rolling		Casting Heattreating Mining/Primary Processing Recycle/Scrap Melting Aluminum Casting Aluminum Smelting Anode Baking Bauxite Mining Bauxite Refining Extrusion Forging Heat Treating Molten Handling Rolling Two separate methods are used for forming carbon anodes: the self-baking Soderberg method, and the prebake method. The in-cell Soderberg method bakes the anodes in the Hall-Heroult reduction cell. The heat liberated from the alumina reduction slowly bakes the carbon anode as it moves down the cell. Carbon anode paste is continuously replenished at the top of the cell. the pre-bake method forms the carbon anodes in ovens outside the reduction cell. The fully formed anodes are inserted into the molten aluminum in the smelting pot for further alumina reduction.