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A novel, zero-waste technology for spent pot lining recycling [Elektronski vir]Angelopoulos, Panagiotis ...Each tonne of aluminium produced in aluminium smelters generates approximately 20 kg of hazardous waste, known as spent pot lining (SPL)`which is a mix of the carbon lining and the refractory lining. ... The waste contains high levels of leachable cyanides and fluorides, as well as components that form combustible gases (mainly CH4). The current practice of the waste management of hazardous SPL is still often landfilling or incineration, which costs aluminium producers on average 200 [euro]/tonne of SPL waste (240 million [euro] annually on a global level). A novel zero waste process has been developed and optimized in the frame of the SPL-CYCLE project (http://splcycle.zag.si/) for wastes originated from two aluminum smelters. The new process consists of five main separation and purification stages which are dilution, filtration, crystallization and flotation, resulting in the production of four products: a) fluoride salts for aluminium production, b) graphitized carbon for aluminium production, c) aluminosilicates for refractory industry, and d) manufactured aggregate for construction (supplementary cementitious materials, lightweight aggregates,geotechnical fill, bricks, concrete). The current research paper presents major aspects of SPL and SPL-CYCLE process, including characterization results from raw materials (1st and 2nd cut) and the products, description of the process' flowsheet and the pilot plant, and presentation of thermodynamic data.Source: 38th International Conference and Exhibition "Bauxite, Alumina and Aluminium Industry in the World and New Global Developments" [Elektronski vir] : virtual conference, 16 - 18 November 2020 (Letn. 45, št. 49, nov. 2020, str. 739-749)Type of material - conference contributionPublish date - 2020Language - englishCOBISS.SI-ID - 47368707
Author
Angelopoulos, Panagiotis |
Klinar, Dušan, 1957- |
Košir, Mateja, 1985- |
Ebin, Burçak |
Bremerstein, Irina |
Peys, Arne |
Halilovič, Miroslav |
Davris, Panagiotis |
Taxiarchou, Maria |
Mladenovič, Ana
Topics
aluminium spent pot-lining (SPL) |
carbon cathode lining |
aluminium reduction cell |
industrial waste valorization |
waste detoxification |
c
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Angelopoulos, Panagiotis | ![]() |
Klinar, Dušan, 1957- | 14980 |
Košir, Mateja, 1985- | 34442 |
Ebin, Burçak | ![]() |
Bremerstein, Irina | ![]() |
Peys, Arne | ![]() |
Halilovič, Miroslav | 20443 |
Davris, Panagiotis | ![]() |
Taxiarchou, Maria | ![]() |
Mladenovič, Ana | 05930 |
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