• Conversion of byproduct carbon obtained from spent pot ...

    Spent pot liners are not only contaminated by fluoride but also by other toxic elements such as cyanides (formed at high temperature reaction with atmospheric nitrogen), alkalis and aluminum. Table1 below shows typical range of the contaminants in such discarded pot liners along with concentration of these toxic elements in SPL carbon powder ...

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  • US6471931B1 Process for recycling spent pot liner ...

    US6471931B1 US09/443,919 US44391999A US6471931B1 US 6471931 B1 US6471931 B1 US 6471931B1 US 44391999 A US44391999 A US 44391999A US 6471931 B1 US6471931 B1 US 6471931B1 Authority US United States Prior art keywords pot liner spent pot process silica silicon carbide Prior art date 19981120 Legal status (The legal status is an assumption and is not a legal …

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  • Spent Potliner Treatment SPL Treatment

    Robust solution to spent potliner. Tetronics offers a safe and permanent treatment solution for Spent Potliner (SPL), thereby overcoming one of the biggest challenges faced by the global primary aluminium production sector. Tetronics’ robust solution to SPL treatment delivers leading environmental credentials for the management of this highly ...

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  • Treatment and Reuse of Spent Pot Lining, an Industrial ...

    The ELKEM process for recycling of Spent Pot Liners, (2/1994). Google Scholar. 14. Brooks et al. Thermal treatment of spent potliner in a rotary kiln, (Light Metals 1992). Google Scholar. 15. G. Felling and P. Webb, Spent potlining treatment using the REYNOLDS METALS’ low temperature process. (35th Annual Conference of Metallurgists, CIM ...

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  • Spent Potlining: an Update | SpringerLink

    A. Platt, “Spent pot lining and salt slag treatment services”, Aluminium 87 (2011) 3, 38–40 Google Scholar [49] V. Kasireddy, J.L. Bernuer and F. M. Kimmerle, “Recycling of spent pot linings”, US patent appl. US 2002 114,748 (8 December 2000) Google Scholar

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  • PAPER OPEN ACCESS …

    The spent pot liner is the largest solid waste produced by the electrolytic aluminum industry, composed of a series of substances that accumulate in the containers

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  • Slow Cooker Liners | Reynolds Kitchens

    Slow cooking is a great way to prepare all kinds of delicious meals, whether you’re feeding one or two people or expecting a crowd! From barbecue favorites like pulled pork to soups and holiday classics, you can make some of your favorite meals with ease using a slow cooker. Now with two convenient sizes, Reynolds Kitchens® Slow Cooker Liners has an option for any of your slow

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  • WO2000030974A1 Process for recycling spent pot liner ...

    A process for recycling spent pot liner obtained from aluminum reduction cells is disclosed. The process includes the steps of combining silica with the spent pot liner in order to covert a majority of the spent pot liner into silicon carbide. Specifically, the silica reacts with carbon in the spent pot liner to form silicon carbide. In order to form the silicon carbide, the materials are ...

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  • Spent Pot Lining Drishti IAS

    Spent Potlining is also known as spent pot liner and spent cell liner. The process of extracting aluminium metal from aluminium oxide 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 ...

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  • Aluminium Smelting Reprocessing of Spent Pot Linings

    Oct 10, 2002· Spent pot linings are a byproduct of the aluminium smelting process. Disposing of these materials has been a headache, but new technology is now able to process the materials into useful, harmless materials. The process, its advantages (including environemntal) and its …

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  • Spent potlining Wikipedia

    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 ...

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  • The Spent Pot Lining Treatment and Fluoride Recycling ...

    Spent Pot Lining (SPL) is an unavoidable waste product of the electrolytic process in the smelting of aluminium. SPL is considered to be a hazardous waste in various countries because it contains significant quantities of absorbed fluoride along with traces of cyanide. The disposal of SPL has been primarily in landfill because of difficulties in...

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  • Effectiveness of cementbased systems for stabilization ...

    Mar 17, 2003· Approximately 7000 t of spent pot liner (SPL) wastes are generated annually from activities associated with Alumı́nio Brasileiro (ALBRAS) plant located at Barcarena, Pará state, Brazil. The inorganic fraction of SPL contains high level of toxic compounds like cyanide and fluoride; its safe disposal has been the subject of serious ...

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  • Spent pot liner recycling Ultromex

    Spent pot lining is an extremely hazardous waste and has long been a problem waste stream for primary aluminium smelters.. Due to its hazards, landfill of SPL is banned in many countries. SPL contains toxic compounds including leachable fluorides and cyanides, plus it reacts with water; hydrolysing to produce explosive gas mixtures of hydrogen and methane.

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  • Total recovery of Spent Pot Liner (SPL) using the Befesa ...

    Total recovery of Spent Pot Liner (SPL) using the Befesa process Carlos Ruiz de Veye September 2012 . September 2012 Industrial waste Recycling Concessions Today Befesa is a technological company that provides sustainable solutions for industrial waste recycling Steel waste Industrial waste mgt.

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