Total Recovery Of Spent Pot Liner (SPL) Using The Befesa

Spent pot lining project (feasibility of an agreement ...

Spent Pot Lining (SPL) project (feasibility of an agreement based approach to clear stockpiles). SPL is a waste material generated from aluminium smelters, of which there are four in current operation in Australia and two recently closed down. Aluminium smelting is the extraction of aluminium metal from aluminium oxide (also known as alumina).

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British Alcan to sell off non-core UK assets | The Independent

British Alcan last week reported a pre-tax profit of £30.9m for 1994, a stark contrast to the £22.7m loss incurred in the previous year. Group turnover advanced from £745m to £853m.

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Befesa :: Press :: News archive :: 2012

Befesa Salt Slags is the UK’s leading waste recycling partner for the primary and secondary aluminium industry and provides environmental solutions for the recycling of aluminium slat slag, spent pot liner (SPL), foundry sand, drosses and their aluminium wastes produced.

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

The treatment of Spent Pot Lining (SPL) has been the occasion of numerous studies in the world. Several processes have reached the commercial stage in USA, Australia and Europe. Most of these processes generate waste that needs to be disposed of.

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“ENVIRONMENTAL EFFECT OF SPENT POT LINING FROM …

Spent Pot Lining-Background Safe disposal of spent pot lining (SPL) of the cryolite bath is the greatest solid waste problem from aluminium smelting process. Pot lining is a layer of carbon situated between the molten metal and refractory material in side the steel shell of an aluminium reduction cell.

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Spent Pot Liner Utilization in Cement & Steel Industry

Spent pot lining (“SPL”) and carbon dust, both being forms of process waste generated in the reduction process, are recycled within the cement industry in UAE. RUSAL : Spent potlining (SPL) trial taken for utilization. The behavior of cyanide and fluoride under high temperature treatment has been investigated.

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Befesa presentation may 2012 (english)

-Spent pot linnings(SPL’s) recycling. ... •Total recycling capacity: 630,000 t of salt slags. •Total European market: ≈1 Mt. ... customer and Befesa agree on the level of metal recovery based on the chemical composition of the dust and the record of recovery.

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Annual Report 2017

Befesa at a Glance 5 BEFESA Annual Report 2017 Performance Highlights Volumes at new record levels in both core segments Record results with significant double-digit growth Electric Arc Furnace (EAF) dust throughput Total revenue Salt slags & Spent Pot Linings (SPL) volume Adjusted EBITDA & margin of revenue 2017 2017 2017 661.0 724.8 509.9 172 ...

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Land Disposal Restrictions; Treatment Standards for Spent ...

Jul 12, 2000· During pot service, the liner is degraded and broken down. Upon failure of a liner in a pot, the cell is emptied, cooled, and the lining is removed. In 1980, EPA originally listed spent potliners as a RCRA hazardous waste and assigned the hazardous waste code K088.

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Removal of Fluoride from Spent Pot Liner Leachate Using ...

Removal of Fluoride from Spent Pot Liner. Leachate Using Ion Exchange Gurdeep Singh, Bipul Kumar, P.K. Sen, J. Majumdar. ABSTRACT: Spent pot liner (SPL), a hazardous solid waste produced presented in Table 1, which shows that natura] SPL leachates at cell houses of aluminum smelters, is a potential source of fluoride contained a considerable concentration of fluoride (158 to 575 pollution.

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befesa salt slag plant - vychuchol.cz

PROCESS FOR RECYCLING SPENT POT LININGS (SPL) 2011-2-24 In the Befesa Salt Slag plant in Witchurch (Wales) in which aluminium and salt slags are recycled, 25 tn. of SPL were recycled. The installation was fed a 3:1 salt slag/SPL ratio: 100 tn. of mixture in total were treated and the ground material was collected in a separate bin.

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Fluoride Removal by Calcite: Evidence for Fluorite ...

Nov 10, 2005· Fluoride contamination of groundwater, both anthropogenic and natural, is a major problem worldwide. In this study, fluoride removal by crushed limestone (99% pure calcite) was investigated by batch studies and surface-sensitive techniques from solutions with fluoride concentra tions from 150 μmol/L (3 mg/L) to 110 mM (∼2100 mg/L). Surface-sensitive techniques, including …

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Spent pot lining project (feasibility of an agreement ...

Befesa recycle aluminium dross salt slags and other residues from dross recycling and use SPL to reduce energy input requirements. Australia has exported around 120,000 tonnes of SPL to European SPL WMPs since the early 1990s and has a permit pending for another 6,000t to be exported.

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In Motion - Recycling Today

May 22, 2003· All incoming SPL and other raw materials will be recycled with no hazardous waste or by-products generated." Nova spent more than $7 million U.S. developing the new technology and started commercially recycling SPL in January. The current installation is capable of recycling approximately 35,000 metric tons of spent aluminum pot liners per year.

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Environmental Statement for the financial year ending the 31

Spent Pot Lining (Cathode residues) 2390.32 MT 3434.95 MT 855.85 MT 3434.95 MT Aluminium Dross 3749.202 MT 4186.252 MT 4101.09 MT 0 Aluminium Dross Residue 707.00MT 1256 MT 1208.22 MT 48.0 MT Pot Duct Cleaning Waste 0.03 MT 0.0 MT 0.0 MT 0 Rejected lining of furnace (refractory) 0.00 MT 0.0 MT 0.0 MT 0 Rejected Refractory of

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Pollution that cannot be prevented should be recycled in ...

• Resource recovery versus protection from harm Contaminated biosolids e-waste plastics Fly ash Spent Pot Liner (SPL) • Persistent organic pollutants (POP’s) waste Polybrominated diphenyl ethers (PBDE’s) Hexabromocyclododecane (HBCD) Perfluorooctane sulfonic acids (PFOS) and other per- and polyfluoralkyl substances (PFAS) % p.a ...

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Services to Aluminium Smelting

Aug 25, 2016· Spent Pot Liner (SPL) / Cell Liner (SCL) HRL Technology Group has assisted clients in evaluation of SPL-disposal technologies and options including chemical and process modelling, SPL handling, materials evaluations (for use in high temperature fluoride-rich environments), process debottlenecking and troubleshooting.

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Combustion and emissions analysis of Spent Pot lining (SPL ...

Sep 20, 2019· Spent Pot lining (SPL) is a carbonaceous material generated during the primary aluminum smelting process. SPL is a hazardous waste but the high energy density (carbon rich fraction) and good environmental impacts (toxic materials such as cyanides are destroyed at temperature well above 1000 °C) of the treated SPL (water washed followed with and NaOH and H 2 SO 4 treatments) …

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Conversion of byproduct carbon obtained from spent pot ...

products [8-18]. Attempts have also been made to utilize the spent pot liner in producing cement from spent pot liner [19]. In such case the spent pot liner is used as a fuel supplement as well as mineralizing agent in cement kiln. In present experiments the SPL derived carbon powder was used to prepare blast furnace tap hole mass an

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Kelly Coulon, P.E.

spent pot liner (SPL) leachate at an aluminum smelter. Reviewed groundwater data and -toxicity eco studies as well as academic literature regarding adsorption and precipitation of fluoride cyanide under and different conditions. Used a geochemical speciation modeling to develop a …

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Hazardous waste: Land disposal restrictions Spent ...

During the pot's service the liner is degraded and broken down. Upon failure of a liner in a pot, the cell is emptied, cooled, and the lining is removed. In 1980, EPA originally listed spent potliners as a RCRA hazardous waste and assigned the hazardous waste code K088. See 45 FR 47832. Regulation

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2012 Newest High Capacity Cement Manufacturing Plant Kiln

Total recovery of Spent Pot Liner (SPL) using the Befesa ...September 2012 • Full recovery plant in Canada (Rio Tinto) High investment and high treatment cost • Cement kiln Only some cement plants can partially use it • Landfill where allowed High fluoride content leachates and cyanhidric acid emission.

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Industrial Minerals Networking | IMFORMED – Waste deep in ...

In the secondary aluminium recycling loop, Befesa targets salt slags, dross fines, spent pot lining, and filter fines, which were examined by Ruiz de Veye, noting that with the closure of some aluminium smelters in Europe, less SPL may be available in the future.

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PROCESS FOR RECYCLING SPENT POT LININGS (SPL) FROM …

Feb 24, 2011· 1. 1.-9. (canceled) 10. A process for recycling spent pot lining (SPL) from primary aluminium production cells, the SPL being obtained by the method comprising: disassembling the linings from the used cell cathodes in cuts or fractions, said fractions comprising refractory materials, carbonaceous materials and other materials like insulators and iron bars; grinding each of the …

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crusher for spent pot liners - ikspreekdewaarheid.nl

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 …

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aluminum dross processing in new zealand

Aluminum dross machine can make full use of the aluminum dross and slag with high aluminum contents and replace the old way for recycling by manpower aluminum dross processing machine is featured with separating the aluminum and dross by one time, high efficiency for recycling rate(90% of aluminum from the dross),short working time, low energy .

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US8062616B2 - Method for treating spent pot liner - Google ...

The present invention relates to a method for treating spent pot liner material (SPL) containing carbon and/or an inorganic material, the method comprising: providing a plasma furnace having first and second electrodes for generating plasma and a crucible having a non-electrically conductive inner surface, heating the SPL material in the crucible in the presence of a flux material and an ...

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Developing Guidance to Support Sustainable Spent Pot ...

Aug 19, 2020· Spent pot lining (SPL) is a solid waste generated from primary aluminum production, and its management has posed a challenge for the aluminum industry for many years. SPL is classified as a hazardous waste or is subject to strict regulations in most jurisdictions due …

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Salt slag recycling / salt cake recycling & treatment ...

Scalable from 2,000 tonnes per year of salt slag to 100,000 tonnes per year, now almost all smelters can take total control of their salt slag waste. Where previously salt slag waste disposal was a significant cost, your salt slag now presents as an asset to monetize and …

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Aluminium International Today Sept Oct 2016 by Quartz -

Sep 28, 2016· Salt slag Befesa has further adopted the salt slags treatment and recycling process to ensure that this patented process can be used for the treatment of Spent Pot Linings (SPL).

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