066ef673-a429-49cd-b54b-acef999a7787Anode, at plantMaterials productionOther materialsThe two types of aluminum smelting technologies are distinguished by the type of anode that is used in the reduction process: soderberg and prebake. Soderberg design has a single anode that covers most of the top surface of a reduction cell (pot). Anode paste (briquettes) is fed to the top of the anode and as the anode is consumed in the process, the paste feeds downward by gravity. Heat from the pot bakes the paste into a monolithic mass before it gets to the electrolytic bath interface. The prebake design has prefired blocks of solid carbon suspended from axial busbars. The busbars both hold the anodes in place and carry the current for electrolysis. The process for making the aggregate for briquettes or prebake blocks is identical. Coke is calcined, ground and blended with pitch to form a paste that is subsequently extruded into blocks or briquettes and allowed to cool. While the briquettes are sent direct to the pots for consumption, the blocks are then sent to a separate baking furnace. Baking furnace technology has evolved from simple pits that discharged volatiles to atmosphere during the baking cycle to closed loop type designs that convert the caloric heat of the volatile into a process fuel that reduces energy consumption for the process.Important note: although most of the data in the US LCI database has undergone some sort of review, the database as a whole has not yet undergone a formal validation process. Please email comments to lci@nrel.gov. The original datasets and documentation can be found online: https://www.lcacommons.gov/nrel/search0Unit process, single operationAttributionalnone95.0No statement2022-03-01T00:00:00.000ILCD format 1.12022-03-01T00:00:00.00000.00.001Data set finalised; entirely publishedNREL US Life Cycle Inventory (USLCI) LibraryVarious (NREL USLCI)trueOtherGaBi (source code, database including extension modules and single data sets, documentation) remains property of Sphera Solutions GmbH. Sphera Solutions GmbH delivers GaBi licenses comprising data storage medium and manual as ordered by the customer. The license guarantees the right of use for one installation of GaBi. Further installations using the same license are not permitted. Additional licenses are only valid if the licensee holds at least one main license. Licenses are not transferable and must only be used within the licensee's organisation. Data sets may be copied for internal use. The number of copies is restricted to the number of licenses of the software system GaBi the licensee owns. The right of use is exclusively valid for the licensee. All rights reserved.Anode (C carrier)Output1.01.00.000Mixed primary / secondaryUnknown derivationvaluable