Caustic Soda Leach of Electric Arc Furnace Dust H. MORDOGAN, T. C ˘_IC˘EK, A. IS˘IK ... that the caustic soda leach-electrolysis process may be technically applicable to Turkish EAF dust.
Dust from production of steel in an electric arc furnace (EAF) contains a mixture of elements that pose a challenge for both recovery and disposal. This paper relates the leachability of six Canadian EAF dusts in four leaching tests [distilled water, Ontario Regulation 347 Leachate Extraction Procedure, Amount Available for Leaching (AALT), …
Simulation programs have been devel oped to study the effect of recycling the electric arc furnace dust leaching residues to the furnace. Residues from sulfuric acid and sodium hydroxide leaching … Expand
The electric arc furnace dust (EAFD) sample used was received from the dust collecting system of the HALYVOURGIKI steel plant, at Elefsina, Attica, Greece. ... Isik, A.: Caustic Soda Leach of Electric Arc Furnace Dust. J. Eng. Environ. Sci. 23, 199–207 (1999) Google Scholar Ruşen, A., Sunkar, A.S., Topkaya, Y.A.: Zinc and lead …
Physical and chemical properties of electric arc furnace (EAF) dust from Tianjin seamless Pipe Company were measured and analyzed. The zinc leaching tests in alkaline medium were carried out under variation of leaching agent concentration, leaching temperature, leaching cumulative time and solid-to-liquid ratio. The thermodynamics and kinetics of …
The efficacy of monosodium glutamate (MSG) as a lixiviant for the selective and sustainable leaching of zinc and copper from electric arc furnace dust was tested. Batch leaching studies and XRD, XRF and SEM-EDS …
Semantic Scholar extracted view of "Caustic roasting and leaching of electric arc furnace dust" by D. Xia et al.
In the present research, the dust was roasted with caustic soda at low …
Electric arc furnace (EAF) dust is a waste product which is generated when steel scrap is melted in an electric arc furnace. It contains high concentrations of iron, zinc and lead. Numerous pyrometallurgical and hydrometallurgical processes have been developed to treat this material.
A combination of pyro and hydrometallurgical route, also known as hybrid process, has …
ABSTRACT Electric Arc Furnace Dust (EAFD) is a potential source of contamination, primarily by the non- ferrous metals as it may contain (Zn, Pb). It is known that steel processing companies make efforts to reuse EAFD, however, today, the implementation of the most common hydrometallurgical methods is considered to be …
In this study, ZnO crystals were fabricated from electric arc furnace dust (EAFD) after alkaline leaching, purification and hydrothermal treatment.
The Effectiveness of Zn Leaching from EAFD Using Caustic Soda. Water, Air, & Soil Pollution, 2018. By Ibrahem Altarawneh. See Full PDF. Download PDF
Electric arc furnace (EAF) dust is produced when iron and steel scrap is remelted in an electric arc furnace. There are still significant problems associated with the pyrometallurgical and/or hydrometallurgical processes for the treatment of this dust. In the present research, the dust was roasted with caustic soda at low
Hydrometallurgical recovery of zinc from electric arc furnace dust was investigated on a laboratory scale, using aqueous sodium hydroxide solution as a leaching agent. Special attention was paid to the effect of NaOH concentration, temperature and liquid/solid phase ratio on the zinc leachability. It was found that all tested factors …
The Effectiveness of Zn Leaching from EAFD Using Caustic Soda ... Abstract Electric arc furnace dust (EAFD) is a toxic waste which is mainlyrichinironoxide,zinc, and lead.
The present paper presents a part of the research efforts of the laboratory of Metallurgy, National Technical University of Athens, Greece, aiming at developing a purely hydrometallurgical method, able to treat the zincferous dust, generated during the production of steel from scraps in Electric Arc Furnace (EAF), efficiently and …
The technical and environmental aspects of treating electric arc furnace dust (EAFD) using a novel process including alkaline roasting and organic acid leaching were evaluated and compared to the globally applied conventional Waelz process.
The elemental and phase compositions of electric arc furnace (EAF) dust from PJSC Severstal were studied. We carried out the thermodynamic modeling of zinc and lead selective extraction process and…
The non-carbothermic zinc pyrometallurgical processing of electric arc furnace (EAF) dust was investigated on a laboratory scale. The main objective of this process was to convert highly stable zinc ferrite (ZnFe2O4), which accounts for more than half of total zinc in the EAF dust, into ZnO and Ca2Fe2O5 by CaO addition. The EAF …
A novel hydrothermal process was developed to extract zinc from pure zinc …
Abstract. Electric arc furnace (EAF) dust is a waste product which is …
A behavior of zinc, lead, and iron during the processing of EAFD (electric arc furnace dust from steelmaking) by the promising method based on its calcination with lime was studied. The chemical and mineralogical composition of the EAFD were analyzed in detail by X-ray fluorescence, X-ray diffraction, and Möss analyses, as well as …
The Effectiveness of Zn Leaching from EAFD Using Caustic Soda
The dust is firstly hydrolysed in water, and then fused in caustic soda at 350 degrees C for 1h, followed by leaching in alkaline so … In this study, a novel and integrated hydrometallurgical process for the production of zinc powder from electric arc furnace (EAF) dust in alkaline medium is reported.
A considerable degree of dust is recovered in gas cleaning units during the production of steel from scrap in electric arc furnaces (EAF). In recent years, the presence of leachable Zn, Pb, Cd, Cr, and other metals within the dust has caused the material to be widely regarded as a toxic waste that is unsuitable for the disposal at landfills.
Request PDF | Extraction of zinc from electric arc furnace dust by alkaline leaching followed by fusion of the leaching residue with caustic soda | Extractability of zinc from two types of ...
Treatments of electric arc furnace dust and halogenated plastic wastes: A review. Author links open overlay panel Mohammad Al-harahsheh, Jomana Al-Nu'airat 1, ... Orhan [132] found that the optimum conditions for leaching using caustic soda were 95 °C, 1/7 solid/liquid ratio, 10 M NaOH, and 2 h of leaching time. He also indicated that …
An ideal treatment for electric arc furnace (EAF) dust is to cost-effectively process the dust on site to generate high-value products. Microwave heating has the potential to be the ideal approach. In this study, testing was conducted to evaluate the feasibility of treating EAF dust under microwave radiation to produce iron metal and zinc …
Electric Arc Furnace Dust (EAFD) is a byproduct of the steelmaking industry, which is one of the most significant and rapidly generated hazardous waste.
Electric arc furnace dust (EAFD) is a toxic waste which is mainly rich in iron oxide, zinc, and lead. Hydrometallurgical extraction of zinc from Jordanian EAFD in alkaline medium was investigated; NaOH, NaHCO3, and Na2CO3 were used as leaching agents. The pH values for the prepared solutions were 8.3, 8.2, and 12.55 for NaHCO3, …
A facile route was proposed to prepare zinc ferrite as a heavy-metal adsorption material from high‑zinc electric arc furnace (EAF) dust by roasting it directly with the addition of low-cost Fe 2 O 3, followed by purification via dilute acid leaching.
A low temperature caustic roasting process followed by leaching was …
The electric arc furnace dust (EAFD) sample and NaOH were taken at a 1:3 M ratio in a porcelain crucible. The set temperature and molar ratio of EAFD to NaOH were selected based on the thermodynamic study.
This study focuses on selective zinc and lead leaching from Electric Arc Furnace (EAF) dust in order to turn this major source of steel plant pollution into a recyclable Fe-rich feed material for ...
Semantic Scholar extracted view of "Microwave caustic leaching of electric arc furnace dust" by D. Xia et al.
However, in the case of electric arc furnace dust recycling, several technical and environmental issues need to be addressed. Firstly, the composition of EAF dust varies depending on the type of steel scrap; therefore, it requires a versatile procedure to accommodate this variation.
A novel hydrothermal process was developed to extract zinc from pure zinc ferrite (ZnFe2O4) nanopowder and zinc-containing electric arc furnace (EAF) dust using hexahydrated ferric chloride (FeCl3·6H2O) as a decomposing agent. The effects of solid FeCl3·6H2O to ZnFe2O4 ratio by mass (R F/Z), hydrothermal reaction temperature, and …
Electric arc furnace dust (EAFD) is a toxic waste which is mainly rich in …
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