Caustic roasting and leaching of electric arc furnace dust
A low temperature caustic roasting process followed by leaching was …
Caustic Soda Leach Of Electric Arc Furnace Dust
Caustic Soda Leach of Electric Arc Furnace Dust
In this study, caustic soda leach experiments were conducted with an EAF dust sample containing 23 % Zn, 5 % Pb and 30 % Fe obtained from by a plant located in Alia ga/Izmir. Optimum...
Microwave caustic leaching of electric arc furnace dust
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.
Caustic Roasting and Leaching of Electric Arc Furnace Dust
In the present research, the dust was roasted with caustic soda at low …
Facile synthesis of metal-doped Ni-Zn ferrite from treated Zn
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.
The Effectiveness of Zn Leaching from EAFD Using Caustic Soda
The Effectiveness of Zn Leaching from EAFD Using Caustic Soda
Recycling of zinc and lead from electric arc furnace dust by …
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 …
The microwave processing of electric arc furnace dust
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 …
Alternative Method for Treating Electric Arc Furnace Dust: …
The excess caustic soda in the roasting step was observed to be a …
Microwave caustic leaching of electric arc furnace dust
Semantic Scholar extracted view of "Microwave caustic leaching of electric arc furnace dust" by D. Xia et al.
Caustic roasting and leaching of electric arc furnace dust
Semantic Scholar extracted view of "Caustic roasting and leaching of electric arc furnace dust" by D. Xia et al.
The Effectiveness of Zn Leaching from EAFD Using Caustic Soda
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, NaHCO 3, and Na 2 CO 3 were used as leaching agents. The pH values for the prepared solutions were 8.3, 8.2, and 12.55 for …
Thermodynamic analysis of caustic-roasting of electric …
A combination of pyro and hydrometallurgical route, also known as hybrid process, has …
New pyrometallurgical process of EAF dust treatment with …
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 …
Hydrometallurgical Treatment of EAF Dust by Direct …
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 …
Extraction of Zinc from Electric Arc Furnace Dust by Alkaline Leaching …
Extractability of zinc from two types of electric arc furnace (EAF) dusts containing 24.8% and 16.8% of zinc respectively (denoted as Sample A and Sample B) were tested using direct alkaline leaching followed by fusion of the resulting leaching residues with caustic soda. The experimental results show that the extraction of zinc is heavily dependent on …
Thermodynamic analysis of caustic–roasting of electric arc furnace dust
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.
Leaching and cementation of heavy metals from electric arc furnace dust
In this process, also called a caustic soda leach process, zinc and lead are selectively dissolved in sodium hydroxide, rejecting iron in the residue ... Alkaline leaching of a local electric arc furnace dust, with no prior metallurgical treatment, dissolved 85% Zn and 90% Pb under the optimum conditions of: 1/7 S/L ratio, 95 °C, 10 M NaOH ...
Caustic Soda Leach of Electric Arc Furnace Dust
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.
Zinc leaching from electric arc furnace dust in alkaline …
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 …
Monosodium Glutamate as Selective Lixiviant …
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 …
Leaching and cementation of heavy metals from electric arc furnace dust
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.
Caustic Soda Leach of Electric Arc Furnace Dust
A novel hydrothermal process was developed to extract zinc from pure zinc …
Extraction of zinc from electric arc furnace dust by alkaline leaching …
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 ...
The Effectiveness of Zn Leaching from EAFD Using …
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.
Metals | Free Full-Text | Zinc Recovery from Steelmaking Dust …
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 …
A novel hydrothermal method for zinc extraction and
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 …
Integrated hydrometallurgical process for production of zinc …
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.
Microwave caustic leaching of electric arc furnace dust
Abstract. Electric arc furnace (EAF) dust is a waste product which is …
The Effectiveness of Zn Leaching from EAFD Using Caustic Soda
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, …
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