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Microwave-supported leaching of electric arc furnace
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Bioleaching of Zinc and Iron from Steel Plant Waste using ...
Abstract The bacterial leaching of zinc and iron from solid wastes at the Isdemir iron and steel plant has been investigated using Acidithiobacillus ferrooxidans as the bacterial agent. The effects of a range of operational parameters, including particle size, solids concentration and pH, on the efficiency of the bioleaching process were investigated.
NEW EAF DUST TREATMENT PROCESS : ESRF BY MICHIO
A new electric smelting reduction furnace (ESRF) has been developed to solve such problems, in addition to recovering metals and conforming to regulations on pollutant emissions and heavy metal leaching. The ESRF is a simple electric furnace, which uses only electric energy for
Microwave caustic leaching of electric arc furnace dust ...
Microwave caustic leaching of electric arc furnace dust Xia, D.K.; Picklesi, C.A. 2000-01-01 00:00:00 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.
Hydrometallurgical method for recovery of zinc from ...
Jan 15, 2002· A process for the leaching of electric arc furnace dust comprising a mixture of zinc, iron and lead oxides, the process comprising the steps of: leaching the dust with a leach solution containing hydrochloric acid and zinc chloride; and electrowinning of metallic zinc; wherein said leaching is carried out at a temperature of at least 80 degree ...
Use of Steel Slag in Subgrade Applications - Purdue University
process is known as electric-arc-furnace slag. After completion of the primary steelmaking operations, steel produced from BOF or EAF ... Use of Steel Slag in Subgrade Applications 5. Report Date October 2009 6. Performing Organization Code 7. Author(s) Iren Zeynep Yildirim and Monica Prezzi
Kinetics of Microwave-Assisted Reduction of Manganese Oxide
: The leaching tests of nickel supported activated carbon under normal pressure in (NH 4) 2 SO 4 were studied. The effects of experimental condition, such as initial concentration of (NH 4 ) 2 SO 4 , liquid-to-solid ratio, leaching time and leaching temperature on the leaching
Microwave treatment of electric arc furnace dust ... - CORE
In the present work microwave treatment of electric arc furnace dust (EAFD) mixed with tetrabromobisphenol A (TBBPA) was investigated. A range of characterization techniques were used to understand the thermal behaviour of TBBPA-EAFD mixtures under microwave pyrolysis conditions.
ALKALINE LEACHING OF ZINC FROM STAINLESS STEEL
Alkaline leaching of zinc from stainless steel electric arc furnace dusts 295 In this paper two different stainless steel electric arc furnace dusts (EAF1 and
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 metal ...
MANGANESE NODULES BY ARC FURNACE SMELTING
were carried out in 50 KVA electric arc furnace for reduction smelting of sea nodule. The smelting produced an alloy rich in Cu, Ni & Co. ... nodules followed by ammoniacal leaching has been carried out at NML, Jamshedpur (5,6). Most of the hydrometallurgical processes inherits the
The Effect of Zinc Ion Concentration and pH on the ...
kinetics of electric arc furnace dust by sodium hydroxide. The study found that at a constant stirring speed of 850 rpm and a temperature of 95°C the rate of zinc leaching decreased as the
Alkaline leaching of iron and steelmaking dust - University
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. In addition, direct recycling of dust back to steel production is hindered due to the presence of zinc.
CA2384935C - Treatment of electric arc furnace dust to ...
A supplemental agent for a hazardous waste composition containing electric arc furnace dust (EAFD) includes potassium magnesium sulfate or a magnesium salt such as magnesium sulfate or magnesium chloride. The supplemental agent when mixed with EAFD and water, along with lime either lime inherent within the EAFD or added lime, reduces the leaching of heavy metals from the waste composition
RECYCLING OF AN ELECTRIC ARC FURNACE FLUE DUST TO
Recycling of an electric arc furnace flue dust to obtain high grade ZnO Oscar Ruiza,b, Carmen Clementeb, Manuel Alonsoa, Francisco Jose Alguacila,* aCentro Nacional de Investigaciones Metalúrgicas (CSIC), Avda.
Microwave-Supported Leaching of Electric Arc Furnace (EAF ...
Abstract: The effect of microwave-supported leaching of electric arc furnace (EAF) slag by ammonium salts was investigated to improve calcium leaching ratio for CO 2 mineral sequestration process.
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 . During the steelmaking process, the EAF can reach temperatures of 1600°C or higher.
Caustic Soda Leach of Electric Arc Furnace Dust
tic soda leach process has the advantage that iron is not soluble in caustic soda. Therefore, leaching with caustic soda is the most promising method of the leaching processes. 1. Hydrometallurgical Recovery of Zinc From Eaf Dust In these processes, the metals are extracted by a liquid leach stage, and then recovered in metallic form by electrolysis.
Zinc leaching from electric arc furnace dust in alkaline ...
agent at a solid-to-liquid ratio of 1:10, 5 g electric arc furnace dust was added under constant agitation and in a 1 L closed flask, a water-cooled condenser as flask cover
Alkaline leaching of zinc from electric arc furnace steel ...
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.
THE EFFECT OF WATER COOLING ON THE LEACHING
The object of this study was the investigation of the influence of cooling methods of hot electric arc furnace (EAF) slag from stainless steel production on the leaching behaviour of the slag. EAF slags from four different grades of stainless steel were
EAF DUST TREATMENT FOR HIGH METAL RECOVERY BY
furnace, which uses only electric energy for material melting and oxide reduction. In contrast, process gas treatment systems are equipped with a wide range of schemes
required chemical for copper extractio
Industrial Electric Arc Furnace (eaf) - Buy Industrial Electric Arc ... l If the supplier does not meet the requirements in your contract, required chemical for copper extractio ... export products include Small Electric ARC furnace (EAF), Copper extraction ... 4, Easy to control the chemical composition, the alloy is recycled highly and stably.
Recovery of zinc and lead from zinc plant residue omid ...
Zinc is primarily produced from sulphidic ores; In the most common hydrometallurgical zinc however, some zinc is produced from oxide-carbonate process, ZnO-rich calcine is first produced from ores and different secondary resources such as zinc ash, sulphide or oxide-carbonate concentrates and then zinc dross, flue dusts of electric arc furnace ...
Characteristics of Metallurgical Waste Slag and its ...
When the metallurgical waste slags were heated from room temperature to 1300°C, the weight loss of Blast Furnace (BF) slag and ladle furnace (LF) refining slag are only 2.25% and 0.9%, respectively, while the weight loss of Basic Oxygen Furnace (BOF) slag and electric arc furnace
Leaching of Zinc Oxide in Acidic Solution - jim.or.jp
Leaching of Zinc Oxide in Acidic Solution Takashi Yoshida MS Zinc Co., Ltd., Tokyo 105-0004, Japan Leaching mechanism of zinc oxide is important not only to understand zinc smelting process but also to develop of new zinc recycling process. Recycling of zinc is mainly done by treatment of electric arc furnace dust (EAF dust).
Microwave treatment of electric arc furnace dust with ...
In the present work microwave treatment of electric arc furnace dust (EAFD) mixed with tetrabromobisphenol A (TBBPA) was investigated. A range of characterization techniques were used to understand the thermal behaviour of TBBPA-EAFD mixtures under microwave pyrolysis conditions. Dielectric and thermal properties of EAFD, TBBPA and their mixtures were determined.
Microwave treatment of electric arc furnace dust with PVC ...
Electric arc furnace dust (EAFD) is classified as an environmentally hazardous waste according to the Environmental Protection Agency (EPA) . It consists of heavy metals oxides such
Study of Zinc Leaching of EAF Flue Dust Using Sodium
Study of Zinc Leaching of EAF Flue Dust Using Sodium Hydroxide Ahsan Abdul Ghani1, Junaid Saleem1,2*, Zeeshan A Hameed3, Hira Lal1 and ... include electric arc furnace flue dust, zinc scrap and spent dry cell batteries. Among them, the major proportion of zinc is found in EAF flue dust.
What are the advantages and disadvantages of induction ...
2) The arc furnace smelting, the molten pool is shallow basin type, the diameter of the slag line part is about 4 to 5 times the depth of the bath; the smelting type induction electric furnace ...
Microwave Assisted Leaching Dielectric Microwave
Electric arc furnace (EAF) dust contains consider- 7. (2002) applied microwave heat. Microwave EAF dust solids in the solution (temperature of treatment was carried out in an adapted microwave particles higher than would be achieved in conven- oven with an energy output of 650 W at 2. nickel.
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