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Total Recovery Of Spent Pot Liner (SPL) Using The Befesa
Recovering carbon, silica and alumina from spent potliner

The process of the present invention for the treatment of spent potliner (SPL) waste materials is shown diagrammatically by FIG. 1, which process is generally identified by the reference numeral 10. The input material 12 consists of SPL as its major ingredient, but may also include any other waste stream with similar chemical make-up.

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Annual Report 2017

Befesa at a Glance 1 BEFESA Annual Report 2017 Long-term growth through sustainable services Annual Report 2017

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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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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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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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crushing process of aluminium

Oct 27, 2014018332Crushing process. Crushing process for a is very simple. You have to push leveler up, so the crushing plate goes up and frees space, where you can place the empty aluminum can. Remember to make sure that can is fully empty before compressing it, or otherwise, you might get an unpleasant surprise, when crushing a can.

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Gainful utilization of spent pot lining - A Hazardous ...

AThesis On Gainful utilization of spent pot lining - A Hazardous Waste from aluminum industry Submitted By Sidharth Sankar Parhi Roll No. 611CH306

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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 …

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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 …

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Fluoride Removal by Calcite: Evidence for Fluorite ...

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 atomic force ...

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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 …

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

Ultromex introduces SALTROMEX our patented plant & technology enabling aluminium smelters to treat and recycle their own salt slag wastes. SALTROMEX is the most cost-effective method for smelters who want the option for in-situ aluminium salt slag recycling & treatment, to recover valuable metals & flux salts & avoid using …

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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 …

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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 …

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A Limestone Reactor for Fluoride Removal from Wastewaters ...

Jun 30, 2000· A two-column limestone reactor has been designed to reduce fluoride concentrations from wastewaters to below the maximum contaminant level (MCL limit) of 4 mg/L. The reactor functions by forcing calcite (CaCO3) to dissolve and fluorite (CaF2) to precipitate in the first column. The second column is not necessary to remove fluoride but is used to precipitate the calcite dissolved in the first ...

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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 ... Befesa full recovery process Processing SPL from European smelters, Australia, New Zealand SPL treatment-existing options . September 2012

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Municipal Recycling - 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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transmittal draft letter w logo

Spent Pot Liner Removal Plan, North Alcoa Site, East St. Louis, IL. Memorandum dated ... Total Mercury 31 0.269 0.18 0.29 0.117 0.208 0.256 0.188 ... Spike Recovery outside accepted recovery limits E - Value above quantitation range * - Value exceeds Maximum Contaminant Leve l H ...

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SPL Processing Technology | Regain Materials

SPL Preparation involves (a) recovery of material from storage or directly from pots, (b) primary segregation of aluminium metal, carbon materials and refractory materials, (c) sorting into like material …

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Industrial Minerals Networking | IMFORMED – Fluorspar ...

“Fluorine recovery in converting SPL wastes into reusable materials” by Massimo Maccagni, R&D Manager, Engitec Technologies SpA, Italy described an ongoing project recycling Na3AlF6/Al2O3 and AlF3 from spent pot liners (SPL) used in aluminium smelting.

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(PDF) Landfilling of produced spent pot liner in aluminium ...

A study of the leaching behaviour of spent pot-lining (SPL), a hazardous waste generated at the end-of-life of aluminium smelting cells, has been carried out using Al(NO3)3∙ 9H2O and HNO3 solutions.

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CTCN

also signed a MoU with FUNAB to use the SPL (aluminum spent. pot liner) waste as fuel. During the last years, in. ... current national waste strategy and further legal/regulatory framework and its current position regarding the energy recovery from waste, supported disposal and treatment practices, current incentive mechanisms, etc. ...

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SPL Processing Technology | Regain Materials

SPL Preparation involves (a) recovery of material from storage or directly from pots, (b) primary segregation of aluminium metal, carbon materials and refractory materials, (c) sorting into like material streams and (d) crushing and size classification in preparation for further processing.

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08 - abengoa.com

aluminum for producing aluminum alloys and recycling of saline slag, SPL (Spent Pot Liner), filter dust, milling dust and other wastes from the aluminum industry. Industrial waste management: Transportation, temporary storage, treatment and valorization, recovery and final disposal, industrial cleaning, collection, transportation and

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Primary Aluminum Production - Light Metal Age Magazine

US8569565 — PROCESS FOR RECYCLING SPENT POT LININGS (SPL) FROM PRIMARY ALUMINUM PRODUCTION — Befesa Aluminio, S.L. (Spain) — The present invention relates to a process for recycling SPL from primary aluminum production, comprising the steps of grinding the separated fractions or cuts, separating materials by means of mechanical treatment ...

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Kelly Coulon, P.E.

photographs. Evaluated sediment dating using the radioactive isotope Cesium-137. Assisted with allocation of past environmental response costs. Assisted with preparation of an expert report and a rebuttal report. • Provided litigation support for cost recovery at a New York City Brownfield Cleanup Program Site formerly

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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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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 …

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Uptake of aluminium by plant cells - RENGEL - 1996 - New ...

Aline Silva Freitas, Isabela Martinez Fontes Cunha, Larissa Fonseca Andrade-Vieira, Vânia Helena Techio, Effect of SPL (Spent Pot Liner) and its main components on root growth, mitotic activity and phosphorylation of Histone H3 in Lactuca sativa L., Ecotoxicology and Environmental Safety, 10.1016/j.ecoenv.2015.11.017, 124, (426-434), (2016).

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Daily Dirt – Site-K Construction Zone

It is the only cement plant in the U.S. utilizing spent pot liner (SPL) as an alternative fuel source. SPL, a waste product generated by the aluminum industry, traditionally has been sent to landfills. The Greencastle plant developed a dedicated storage, handling, and injection system for off-site processed pot liner.

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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 …

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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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Recycling of waste from the

Best available techniques (BAT) for SPL treatment •“In order to reduce the disposal of spent pot lining, BAT is to organise operations on the site so as to facilitate its external recycling. Including using one or a combination of the techniques shown below“ •Use in cement manufacture •Use as a carburiser in the steel and ferro-alloy ...

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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 …

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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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aluminium dross milling

Dross is a mass of solid impurities floating on a molten metal or dispersed in the metal, such as in wrought iron. It forms on the surface of low-melting-point metals such as tin, lead, zinc or aluminium or alloys by oxidation of the metal.For higher melting point metals such as steel, oxidized impurities melt and float making them easy to pour off.

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