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- Spent_potlining abstract "Spent Potlining (SPL) is a waste material generated in the primary aluminium smelting industry. Spent Potlining is also known as Spent Potliner and Spent Cell Liner.Primary aluminium smelting is the process of extracting aluminium metal from aluminium oxide (also known as alumina). The process takes place in electrolytic cells that are known as pots. The pots are made up of steel shells with two linings, an outer insulating or refractory lining and an inner carbon lining that acts as the cathode of the electrolytic cell. During the operation of the cell, substances, including aluminium and fluorides, are absorbed into the cell lining. After some years of operation, the pot lining fails and is removed. The removed material is spent potlining (SPL). SPL was listed by the United States Environmental Protection Agency in 1988 as a hazardous waste.Hazardous properties of SPL are: Toxic fluoride and cyanide compounds that are leachable in water Corrosive - exhibiting high pH due to alkali metals and oxides Reactive with water - producing inflammable, toxic and explosive gases.The toxic, corrosive and reactive nature of SPL means that particular care must be taken in its handling, transportation and storage. SPL from aluminium reduction cell cathodes is becoming one of the aluminium industry's major environmental concerns. On the other hand, it also represents a major recovery potential because of its fluoride and energy content.Most SPL is currently stored at the aluminium smelter sites or placed in landfills. Dissolved fluorides and cyanides from SPL landfill leachate may have environmental impacts. It is not acceptable that leachate contaminated with these harmful compounds may escape from stockpiles. Other storage methods are secure landfills or permanent storage buildings. These are expensive solutions and may create future problems.".
- Spent_potlining wikiPageExternalLink case-studies.
- Spent_potlining wikiPageExternalLink final_app_benchmarking_and_measurement_project_2010_data_10-11-2011.pdf.
- Spent_potlining wikiPageExternalLink CleanupSiteDocuments.aspx?csid=2215.
- Spent_potlining wikiPageExternalLink spl_ebook_021010.pdf.
- Spent_potlining wikiPageID "42886528".
- Spent_potlining wikiPageLength "20383".
- Spent_potlining wikiPageOutDegree "28".
- Spent_potlining wikiPageRevisionID "700736093".
- Spent_potlining wikiPageWikiLink Aluminium.
- Spent_potlining wikiPageWikiLink Aluminium_carbide.
- Spent_potlining wikiPageWikiLink Aluminium_nitride.
- Spent_potlining wikiPageWikiLink Aluminium_oxide.
- Spent_potlining wikiPageWikiLink Aluminium_smelting.
- Spent_potlining wikiPageWikiLink Ammonia.
- Spent_potlining wikiPageWikiLink Basel_Convention.
- Spent_potlining wikiPageWikiLink Carbon.
- Spent_potlining wikiPageWikiLink Category:Aluminium.
- Spent_potlining wikiPageWikiLink Category:Smelting.
- Spent_potlining wikiPageWikiLink Cryolite.
- Spent_potlining wikiPageWikiLink Cyanide.
- Spent_potlining wikiPageWikiLink Electricity_generation.
- Spent_potlining wikiPageWikiLink Electrolyte.
- Spent_potlining wikiPageWikiLink Graphite.
- Spent_potlining wikiPageWikiLink Hall–Héroult_process.
- Spent_potlining wikiPageWikiLink Hydrogen.
- Spent_potlining wikiPageWikiLink Landfill.
- Spent_potlining wikiPageWikiLink Life-cycle_assessment.
- Spent_potlining wikiPageWikiLink Methane.
- Spent_potlining wikiPageWikiLink Portland_cement.
- Spent_potlining wikiPageWikiLink Refractory.
- Spent_potlining wikiPageWikiLink Roasting_(metallurgy).
- Spent_potlining wikiPageWikiLink Sodium_fluoride.
- Spent_potlining wikiPageWikiLink United_States_Environmental_Protection_Agency.
- Spent_potlining wikiPageWikiLinkText "Spent cell liner".
- Spent_potlining wikiPageWikiLinkText "Spent potlining".
- Spent_potlining wikiPageWikiLinkText "spent linings".
- Spent_potlining wikiPageWikiLinkText "spent pot liner".
- Spent_potlining wikiPageWikiLinkText "spent potlining".
- Spent_potlining wikiPageUsesTemplate Template:Reflist.
- Spent_potlining subject Category:Aluminium.
- Spent_potlining subject Category:Smelting.
- Spent_potlining hypernym Material.
- Spent_potlining type ChemicalCompound.
- Spent_potlining comment "Spent Potlining (SPL) is a waste material generated in the primary aluminium smelting industry. Spent Potlining is also known as Spent Potliner and Spent Cell Liner.Primary aluminium smelting is the process of extracting aluminium metal from aluminium oxide (also known as alumina). The process takes place in electrolytic cells that are known as pots.".
- Spent_potlining label "Spent potlining".
- Spent_potlining sameAs m.010qlnl5.
- Spent_potlining wasDerivedFrom Spent_potlining?oldid=700736093.
- Spent_potlining isPrimaryTopicOf Spent_potlining.