Preparation of glaze using electric-arc furnace dust as raw material

Silva, Vanessa S.; Silva, Juliana Saragiotto; Costa, Bruno dos Santos; Labes, Clayton; Oliveira, Rosane Maria Pessoa Betânio

doi:10.1016/j.jmrt.2019.09.018

Cited by 20 publications

(13 citation statements)

References 27 publications

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“…Use of the secondary raw materials, the so-called scrap iron, as a raw material, and electricity as the energy source of this process, steel production in electric arc furnaces has become more prominent than any other steel production process in the world [1,2]. The main sources of secondary raw materials for steel production are construction material waste, old cars, appliances, and household waste, which means that waste can contain a large number of different metals, plastics and rubber, glass, paint, oil, and even salts [1][2][3][4][5][6][7][8]. Due to the high process temperature (1600 °C) in the electric arc furnace, during melting of a batch, some elements evaporate and together with solid particles carried away with the gas phase, form one of the by-products -electric arc furnace dust (EAF dust) [3,8,9].…”

Section: Introductionmentioning

confidence: 99%

“…The amount of EAF dust generated during the production of 1 t of crude steel is about 10-20 kg [3,10]. A typical EAF dust has a reddish-brown or dark brown appearance, and very fine particles that can spread in the air [3,5]. Composition of EAF dust can widely vary depending on the operating conditions of the electric arc furnace, characteristics of scrap iron charged in the furnace, the working period, specifications of the steel produced, and is also specific to each plant [1,4,6,11].…”

Section: Introductionmentioning

confidence: 99%

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Investigation of hazardous waste a case study of electric arc furnace dust characterization

Trifunovic

Milić

Avramović

et al. 2022

Hem Ind

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Dust from an electric arc furnace is formed as the main by-product of the steel production process from the secondary iron-based raw materials. This dust has significant contents of Zn and Fe, as well as Pb, Cd, Ca, Mg, Cr, Mn, Si, Ni, Cu, F, Cl and other elements and is considered hazardous industrial solid waste since it contains heavy metals. In order to protect the environment and public health from the negative impact of this type of hazardous waste, it is necessary, even mandatory, to carry out its treatment in accordance with the legislation of the country where it is located. Before applying any treatment of the electric arc furnace (EAF) dust, it is necessary to perform its detailed characterization. In this paper, the following characterization of EAF dust originating in the Republic of Serbia was performed: physical-mechanical and chemical characterization, determination of granulometric composition, and mineralogical characterization. Also, the EAF dust impact on the environment and human health was assessed (Leachability and Toxicity Characteristic Leaching Procedure (TCLP) tests). The results have shown that the Zn content is in the range 32 to 35 % and that the main mineralogical phases of the dust are zincite, franklinite, magnetite, and magnesioferrite. Granulometric analysis has shown that 80 % of the sample consists of particles less than 26 ?m in size. According to the leaching test results, the EAF dust is characterized as a hazardous waste due to the increased chloride content, while the TCLP test indicated dust toxicity due to the increased contents of Zn, Cd, and Pb.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of hazardous waste a case study of electric arc furnace dust characterization

Trifunovic

Milić

Avramović

et al. 2022

Hem Ind

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“…However, dust used for these purposes also requires subsequent treatment. In addition, dust is also used to directly produce materials such as glaze [15] and mortars [16][17][18]. for these purposes also requires subsequent treatment.…”

Section: Introductionmentioning

confidence: 99%

Coupled Thermodynamics and Phase Diagram Analysis of Gas-Duct Concretion Formation in Pyro-Processing Ironmaking and Steelmaking Dust

Wang

Hua

et al. 2021

Minerals

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In recent years, the steel industry has accumulated approximately 100 million tons of dust annually, severely threatening the environment. Rotary kiln technology is one of the main industrial methods used to process this dust. However, some substances in flue gas congeal on the cooling wall of the gas duct and seriously affect production. In this study, the properties and formation mechanisms of the coagulum were investigated on the basis of experimental and thermodynamic analyses. The experimental results showed that the coagulum is mainly composed of chlorides (KCl, NaCl, and ZnCl2), oxides (ZnO, FeO), and carbon, with three structures: lumps, fibers, and particles. Based on a thermodynamic analysis, a reasonable explanation was proposed to clarify the formation mechanism. The liquid phase (a eutectic system of KCl–NaCl–ZnCl2), dendrites (KCl, NaCl), and particles (ZnO, FeO, C) were found to act as binders, stiffeners, and aggregates in the coagulum, respectively, constituting a composite structure. Liquids acting as binders are essential for coagulum formation, and dendrites and particles strengthen this effect. Furthermore, the eutectic system of chlorides plays a crucial role in coagulum formation. The results of the present study offer a theoretical understanding of gas-duct coagulation and will provide guidance for adopting alleviation measures.

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“…The amount of EAFDS generated in EAF route is estimated to be 15-20 kg per ton of steel produced (Arnold et al 2017;Ferreira et al 2018;Silva et al 2019). The composition of EAFDS differs based on the type of steel produced with a considerable variation of compositions.…”

Section: Introductionmentioning

confidence: 99%

Removal of Al, Ba and Mg from industrial wastewater using EAFDS and lime

et al. 2020

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Wastewater treatment and removal of hazardous metals is imperative for the well-being of living things and the environment. Different methods for the removal of hazardous metals have been proposed and practiced with varying success. In this study, dust slag generated by electric arc furnace is utilized for the removal of aluminium, barium and magnesium from industrial effluent. Slag which is a waste generated during the process of steel production is alkaline by nature. It was able to raise the pH of the acidic effluent to 8.7 removing most of the metals and reducing the amount of commercial alkali required to raise the pH to the target pH of 12.5. EAFDS in conjunction with lime removed 98% of Al, 95.8% of Ba and 99.7% of Mg. The method was simple, efficient and cost-effective since it utilizes a material considered hazardous waste for the treatment.

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Preparation of glaze using electric-arc furnace dust as raw material

Cited by 20 publications

References 27 publications

Investigation of hazardous waste a case study of electric arc furnace dust characterization

Investigation of hazardous waste a case study of electric arc furnace dust characterization

Coupled Thermodynamics and Phase Diagram Analysis of Gas-Duct Concretion Formation in Pyro-Processing Ironmaking and Steelmaking Dust

Removal of Al, Ba and Mg from industrial wastewater using EAFDS and lime

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