قائمة الطعام
1. Introduction. Spent pot lining (SPL) is a hazardous waste produced during the Hall−Heroult process in the electrolytic aluminum industry (Xiao et al., 2018a).During the electrolytic reduction process, the electrolyte (e.g., Na 3 AlF 6, AlF 3, CaF 2, LiF), molten aluminum, and other corrosive substances continuously infiltrate into the …
WhatsApp: +86 18221755073
Keywor ds: Spent pot-lining; Aluminium hydroxyfluoride hydrate; Smelter grade aluminium fluoride. 1. Introduction. Spent pot-lining (SPL) is a hazardous waste generated at the.
WhatsApp: +86 18221755073
AThesis On Gainful utilization of spent pot lining - A Hazardous Waste from aluminum industry Submitted By Sidharth Sankar Parhi Roll No. 611CH306 Under the Supervision of Prof. Pradip Rath In partial fulfillment for the award of the Degree of Master of Technology (Research) In Chemical Engineering Department of Chemical Engineering National ...
WhatsApp: +86 18221755073
Supplementary cementitious materials (SCM) allow to replace the cement and the concrete, but the availability is becoming more limited. Among the supplementary cementitious materials, there is treated spent pot linings which are waste products from the production of primary aluminum or SPL (Spent Pot Lining) which is a hazardous material.
WhatsApp: +86 18221755073
Wastewaters generated by the aluminum anodizing industry have been identified as a source of acid, Al 3+, and caustic values that could be used for the …
WhatsApp: +86 18221755073
Spent pot lining (SPL) is a carbon rich material generated during primary aluminium smelting process. The major constituents of SPL are carbon (40–50%), fluoride (10–18%), aluminium (10–13%), cyanide (700–4500 ppm) and sodium (12–16%) along with other metals like calcium, iron, lithium, titanium and magnesium in trace amounts.
WhatsApp: +86 18221755073
Spent pot lining (SPL) from stopped aluminium electrolysis cells is an environmental problem. It consist of about 30 % carbon, 30 % refractory and isolation materials, 40 % …
WhatsApp: +86 18221755073
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(NO 3) 3 ∙ 9H 2 O and HNO 3 solutions. Following an initial water wash, a single leaching step using 0.5 M HNO 3 and 0.36 M Al(NO 3) 3 at 60 °C extracted a total of 96.3 wt.% of …
WhatsApp: +86 18221755073
Spent pot lining (SPL) is a solid waste produced at the end of life of aluminum reduction cells. SPL is hazardous to the environment due to fluoride and cyanide compounds and is classified as toxic waste. Recovering the fluorine compounds in SPL can be used to eliminate the toxicity in these wastes and return part of the production costs, …
WhatsApp: +86 18221755073
Spent pot lining (SPL) is a carbon rich material generated during primary aluminium smelting process. The major constituents of SPL are carbon (40–50%), …
WhatsApp: +86 18221755073
Spent Pot Lining First Cut (shortened to SPL-1cut) is a solid waste discharged from a primary aluminum electrolytic production process. SPL-1cut is classified as hazardous waste in China because it contains large amounts of soluble sodium fluoride and a tiny amount of cyanide. Most of SPL-1cut is ca …
WhatsApp: +86 18221755073
Society and governments have paid more attention to environmental protection in recent years. As one of the main solid wastes from the aluminum electrolysis industry, the research interest in SPL has been increasing in recent years [17], [18], [19].Google Scholar was used to searching papers on SPL after 2000 (search keywords …
WhatsApp: +86 18221755073
Spent Pot Lining First Cut (shortened to SPL-1cut) is a solid waste discharged from a primary aluminum electrolytic production process. SPL-1cut is classified as hazardous waste in China because it contains large amounts of soluble sodium fluoride and a tiny amount of cyanide. Most of SPL-1cut is carbon—about 65%—and its calorific …
WhatsApp: +86 18221755073
Electrolytic aluminum Spent Pot Lining (SPL) contains excess soluble fluoride, which can cause harm to the environment and human body when it seeps into the ground with rainwater. Therefore, it is necessary to convert the soluble fluoride into a chemically stable insoluble substance. In order to stabilize the fluoride ions of soluble …
WhatsApp: +86 18221755073
Spent pot lining (SPL), a by-product of the aluminum industry, is massively produced worldwide. SPL treated with the low caustic leaching and process (LCLL-ash) is no more hazardous and can ...
WhatsApp: +86 18221755073
The typical service life of the modern reduction cell is about 2500–3000 days. The spent pot-lining (SPL) arises at the end of service life of aluminum reduction pot. For the production of every tonne of primary aluminum, about 24–30 kg of SPL is generated (Sun et al., 2019). Thus, SPL generation reached about 1.7 million tonnes in …
WhatsApp: +86 18221755073
DOI: 10.1016/j.hydromet.2020.105319 Corpus ID: 216332211; Defluorination of spent pot lining from aluminum electrolysis using acidic iron-containing solution @article{Yunfei2020DefluorinationOS, title={Defluorination of spent pot lining from aluminum electrolysis using acidic iron-containing solution}, author={Nie Yunfei and …
WhatsApp: +86 18221755073
Spent pot lining (SPL) is a toxic waste material produced during the pot replacement process in the aluminium industry. This paper presents a comprehensive environmental assessment of a case study in the United Arab Emirates (UAE), where SPL from Emirates Global Aluminium (EGA) was used as a feedstock at a cement plant in …
WhatsApp: +86 18221755073
Aluminum is smelted in steel cells that are lined with an insulating refractory lining and an interior carbon lining (Fig. 1). When this lining deteriorates and comes to the end of its …
WhatsApp: +86 18221755073
The spent pot lining (SPL) of aluminum cell is one of the most environmentally hazardous waste of the aluminum industry due to its content of up to 40 wt. % fluorides. At present most of the SPL ...
WhatsApp: +86 18221755073
The cotreatment of spent pot-lining (SPL), a high fluoride (20 wt %), and cyanide (up to 1 wt %) waste generated in aluminum smelting, and Al3+ wastewaters generated by the aluminum anodizing ...
WhatsApp: +86 18221755073
The spent lining of aluminum electrolyzer is one of the most environmentally hazardous wastes of the aluminum industry due to its content of up to 0.2 wt.% cyanide and up to 40 wt.% fluorides.
WhatsApp: +86 18221755073
Report on global spent pot lining management practices. Demonstrating a commitment to sustainable management of Spent Pot Lining (SPL), this guidance looks at ways to improve how the industry manages its wastes by identifying the key elements of an effective SPL management plan. SPL is classified as a hazardous waste in many countries and …
WhatsApp: +86 18221755073
The spent pot lining (SPL) of aluminum cell is one of the most environmentally hazardous waste of the aluminum industry due to its content of up to 40 wt. % fluorides. At present most of the SPL is accumulated near aluminum factories in specially equipped landfills, where it can interact with water and air, with formation of toxic compounds and ...
WhatsApp: +86 18221755073
"Alba Names Australia's Regain as Technology Partner for Spent Pot Lining Treatment Plant," Aluminium Insider, December 24, 2019. Banker, D.B., et al., "Detoxification of aluminum spent potliner by thermal treatment, lime slurry quench and post-kiln treatment," U.S. Patent 5164174A, Reynolds Metals Co., 1991.
WhatsApp: +86 18221755073
Spent Pot Lining (SPL) is a by-product from the aluminium smelting process and is produced at a rate of 22–25 kg per Tonne of metallic Al generated (Holywell and …
WhatsApp: +86 18221755073
DOI: 10.1016/j.clpl.2022.100004 Corpus ID: 246686736; Recycling graphite from waste aluminium smelter Spent Pot Lining into lithium-ion battery electrode feedstock @article{Robshaw2022RecyclingGF, title={Recycling graphite from waste aluminium smelter Spent Pot Lining into lithium-ion battery electrode feedstock}, author={Thomas …
WhatsApp: +86 18221755073
Spent pot Lining (SPL) generated from Primary Aluminium Smelting Industries 32.0 Utilization of Spent Pot Lining (SPL): Source Of eneration Spent Pot Lining (SPL) - During production of Primary Category. I I of Schedule-I Aluminium from Alumina of HOWM Rules, 2016 Smelting Industries 32.1 Source of Waste Recove /Product For …
WhatsApp: +86 18221755073
The cotreatment of spent pot-lining (SPL), a high fluoride (20 wt %), and cyanide (up to 1 wt %) waste generated in aluminum smelting, and Al3+ wastewaters generated by the aluminum anodizing industry was identified in this work as a treatment alternative that holds the potential to virtually remove the need for purchasing chemical reagents while …
WhatsApp: +86 18221755073
Wastewaters generated by the aluminum anodizing industry have been identified as a source of acid, Al3+, and caustic values that could be used for the treatment of spent pot-lining (SPL) generated in primary aluminum smelting. In this paper, recovery of aluminum and fluoride values as an aluminum fluoride product that could be …
WhatsApp: +86 18221755073حقوق النشر ©2000- 2024 شركة شنغهاي زينيث
