caustic soda leach of electric arc furnace dust

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caustic soda leach of electric arc furnace dust

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The Effectiveness of Zn Leaching from EAFD Using Caustic ...

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.

Leaching properties of electric arc furnace dust prior ...

Extraction of zinc from electric arc furnace dust by alkaline leaching followed by fusion of the leaching residue with caustic soda. Chin. J. Chem. Eng., 12(2): 174 – 178. [Web of Science ®] Xia, D. K. and Pickles, C. A. 2000. Microwave caustic leaching of electric arc furnace dust. Miner. Eng., 13(1): 79 – 94., [Web of Science ®],

(PDF) Caustic Soda Leach of Electric Arc Furnace Dust

Caustic Soda Leach of Electric Arc Furnace Dust. ... caustic soda leach experiments were conducted with an EAF dust sample containing 23 % Zn, 5 …

Caustic Soda Leach of Electric Arc Furnace 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.

Extraction of Zinc from Electric Arc Furnace Dust by ...

Abstract 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.

Zinc-recovery-BF-EAF: Technology, Patent, Recycling ...

recovery of zinc from blast furnace and electric arc furnaces dusts. Zinc from Blast & EA Furnace Dusts Primary Information Services ... Contents on the CD Rom. Many potential crude zinc oxides sources are in electric arc furnace (EAF) dust, galvanising ashes, brass foundry and converters fumes ... Caustic Soda Leach of Electric Arc Furnace ...

Caustic Roasting and Leaching of Electric Arc Furnace Dust

Caustic Roasting and Leaching of Electric Arc Furnace Dust Article in Canadian Metallurgical Quarterly 38(3):175-186 · July 1999 with 91 Reads DOI: 10.1016/S0008-4433(99)00014-2

THERMAL TREATMENT OF STAINLESS STEEL DUSTS FOR …

THERMAL TREATMENT OF STAINLESS STEEL DUSTS FOR LEACHING Jari Aromaa1)*, Istvan Galfi1), ... with 80 to 85 % of the electric arc furnace (EAF) dust in the US and up to 76 % worldwide treated in Waelz kilns [3]. ... 33 % Fe) were leached in caustic soda solution and using caustic roasting pre – treatments the amount of extracted zinc increased ...

Investigation of kinetics of zinc leaching from electric ...

Kinetics of zinc leaching from electric arc furnace dust from a strip mill plant in Thailand was investigated. The studied variables were stirring speeds, sodium hydroxide concentrations, reaction ...

Alkaline leaching of iron and steelmaking dust - Aalto

Steel production generates significant quantities of dust and sludge in blast furnaces (BF), basic oxygen furnaces (BOF), and electric arc furnaces (EAF). These dusts contain toxic elements, such as heavy metals, and are thus classified as harmful waste making the disposal of them expensive.

ALKALINE LEACHING OF ZINC FROM STAINLESS STEEL …

dust back into furnaces. In this paper two different stainless steel electric arc furnace dusts (EAF1 and EAF2) from Outokumpu Stainless (Tornio, Finland), were leached using NaOH solutions. The purpose was to selectively leach out zinc from the dusts and to find factors that affected most dissolution of zinc.

Caustic soda leach of electric arc furnace dust

Caustic soda leach of electric arc furnace dust Lechada de soda cáustica de polvo de horno de arco eléctrico Repositorio digital de información especializado en procesos industriales. Encuentre artículos, tesis, manuales, libros, videos, infografías, software.

FR2510141A1 - Zinc recovery from electric steel making ...

Zinc-contg. dust, from electric steel making furnaces, is leached with caustic soda to extract the zinc, pref. in two stages, the first stage employing a relatively weak (pref. 200-250 g/l) caustic soda soln. to leach zinc oxide and the second stage employing a more concentrated (250-2000 g/l) caustic soda soln. to leach zinc ferrite.

(PDF) Pressure Leaching of EAF Dust with Sulphuric Acid ...

The total leaching time is one hour. pilot plant based on caustic leaching, on the purification of JANDOVA et al. [10] have leached steelmaking dust contain- solution by zinc dust and on electrowinning. ... the increase of temperature raises the leaching metallurgical process to treat carbon steel electric arc furnace dust selectivity. This ...

Caustic roasting and leaching of electric arc furnace dust ...

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 temperatures.

US20070041883A1 - Process for hydrometallurgical treatment ...

A process for treating electric arc furnace dust to recover lead, zinc, iron and precious metals by washing the dust, solubilizing and electrowinning some metals, and extracting other metals from the solids left after the solubilizing step. ... caustic based processes in which the leaching and dissolving steps employ simple chemistry that takes ...

Alkaline electro- hydrometallurgical process for Zn ...

Jan 09, 2013· Alkaline electro- hydrometallurgical process for Zn extraction from electric arc furnace dust ... (1986) Zinc and Lead Recovery from EAF Dusts by Caustic Soda Process. 44th Electric Furnace Conference Proceedings, Iron and Steel Society ... (2000) Microwave Caustic Leaching of Electric Arc Furnace Dust. Department of Materials and ...

Key Words: Zinc, dust, leach, electric arc furnace ...

These experiments indicated that the caustic soda leach-electrolysis process may be technically applicable to Turkish EAF dust. ... DMCA Key Words: Zinc, dust, leach, electric arc furnace Elektrik Ark Ocag Tozlarnn Kostik Soda Lici . Cached. Download Links [journals.tubitak.gov.tr] ... {Key Words: Zinc, dust, leach, electric arc furnace ...

PRODUCTION OF ZINC POWDER FROM Co-Zn PLANT …

After leaching HFC with caustic soda, a strongly alkaline filtrate solution was obtained and stored. Finally, zinc ... Caustic soda leach of electric arc furnace dust Sodium hydroxide Electric arc furnace The extraction of zinc and lead from electric arc furnace dust Mordodan et al.

Lead and zinc selective precipitation from leach electric ...

Keywords: Electric arc furnace dust, zinc, lead, leaching. 1 INTRODUCTION Zinc and lead usually occur together in a variety of mineral zinc ores and some solid wastes such as steel mill electric arc furnace (EAF) dust [1].

leaching with caustic of the chromite plant

Leaching - Download as PDF File ... = 0.2 Caustic soda is manufactured by ... Solvent discharged in underflow The liquid product from plant contains 54.00 ... Contact Supplier

Alkaline leaching of zinc from electric arc furnace steel dust

Alkaline leaching of zinc from electric arc furnace steel dust. :1689. : Alkaline leaching of zinc from electric arc furnace steel dustA.J.B. Dutra*, P.R.P. Paiva, L.M. TavaresDepartment of Metallurgical and Materials Engineering, Federal University of Rio de Janeiro, COPPE/UFRJ, P.O. Box 68505,Rio de Janeiro, RJ ...

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 Department of Mining Engineering, University of Dokuz Eyl¨ul Izmir-TURKEY_ Received 28.08.1997 Abstract The annual process dust output of Turkish EAF steel plants is approximately 120,000 t. EAF dust

Recycling EAF dust leaching residue to the furnace: A ...

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 …

KINETICS OF PbAND ZnLEACHING FROM ZINC PLANT …

In the caustic soda leach process, lead and zinc are selectively dissolved in sodium hydroxide solution rejecting nonamphoterics in the residue. The process has been attempted for the dissolution of zinc from different sources such as iron and steel making dusts [37,38], electric arc furnace dust [27-29], smithsonite Zn–Pb

Leaching properties of electric arc furnace dust prior ...

Leaching properties of electric arc furnace dust prior/following alkaline extraction ... NaOH followed by fusion leaching residues with caustic soda, ... Leaching properties of electric arc ...

Investigation of kinetics of zinc leaching from electric ...

Abstract 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 temperatures.

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 ...