Long and short-term performance of a stabilized/solidified electric arc furnace dust

Fernández‐Pereira, Constantino; Luna-Galiano, Y.; Rodríguez‐Piñero, Miguel; Parapar, José Vale

doi:10.1016/j.jhazmat.2007.03.034

Cited by 37 publications

(19 citation statements)

References 23 publications

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“…Olmo et al [16] studied on the modeling of Zn solubility in stabilized EAFD. Pereira et al [17] investigated the behaviour of an aged S/S product, EAFD stabilized by using fly ash, cement, and lime.…”

Section: Studied Eafd Studied Pc Eafdmentioning

confidence: 99%

Steel foundry electric arc furnace dust management: Stabilization by using lime and Portland cement

Salihoğlu

Pınarlı

2008

Journal of Hazardous Materials

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Section: Studied Eafd Studied Pc Eafdmentioning

confidence: 99%

Steel foundry electric arc furnace dust management: Stabilization by using lime and Portland cement

Salihoğlu

Pınarlı

2008

Journal of Hazardous Materials

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“…In spite of variations in the character of EAFD, some intervals were determined by weight for potential elements that are formed in it. Orhan 2005 determined these intervals by weight to be 7-40% Zn, Pb (4-9%), Fe (24-27%), Cd (0.1-0.3%), Mn (1-1.5%), Si (1-1.5%), Cu (0.1-0.5%), Cr (0.15-0.25%) Cl (2-4%), F (0.2-0.9%) (Orhan 2005 Heavy metals leaching from S/S products strongly depends on the pH; thus, the fi nal pH value of the leachate is the most important variable in terms of ensuring the heavy metal leaching limits (Pereira et al 2007, Salihoğlu 2007. The fi nal pH value of the leachate must be within a range of values corresponding to the minimum solubility of the metals in the leaching medium.…”

Section: Introductionmentioning

confidence: 99%

Stabilization and solidification of electric arc furnace dust originating from steel industry by using low grade MgO

Bayraktar¹,

Avşar²,

Toröz³

et al. 2015

Archives of Environmental Protection

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Abstract:In this study, solidifi cation/stabilization (S/S) of electric arc furnace dust (EAFD) which is generated during the production of steel from scrap metals and classifi ed as hazardous waste were investigated by using different ratios of cement and low grade MgO (LG MgO) as binding agents. Type I PC 42.5 R portland cement and LG MgO which contains 70-80% MgO were used. S/S blocks that contain different ratios of binding agents which have 1/0.5 -1/1 -1/2 -1/3 -1/4 -1/5 cement/LG MgO ratio and S/S blocks which contain only cement and no LG MgO agents were prepared. These blocks, which contain 3 different waste ratios according to weight, 20%, 30% and 40% respectively, were produced and exposed to 28-day water purifi cation. At the end of the purifi cation process, S/S blocks were extracted using TCLP (Toxicity Characteristic Leaching Procedure) tests in order to determine the leaching behavior of Zn, Pb, and Cd in S/S blocks. By the end of this study, it was concluded that the recovery of EAFD is possible and applicable by immobilization. The fi ndings of the study concluded that environmental performances or structural properties of blocks contain 30% waste by weight are suitable. This method is a proper one for recovering and treatment of EAFD with mixture of cement and LG MgO.

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“…Several researchers investigated the long-term leaching mechanisms of the toxic substances, such as As, Pb, Cu, Cd, Cr, Zn, and Mg, from the S/S products (cements or glass) made from fly ash, ore tailings, steel foundry dust, sewage sludge, and electric furnace dust (Dutre and Vandecasteele, 1996;Moon et al, 2010;Patra et al, 2011;Song et al, 2013;Pereira et al, 2007). The leaching mechanisms of toxic substances are mainly controlled by diffusion, dissolution, precipitation, or diffusion and wash-off.…”

Section: Introductionmentioning

confidence: 99%

Ceramic tiles with black pigment made from stainless steel plant dust: Physical properties and long-term leaching behavior of heavy metals

Zhu

Cai

et al. 2016

Journal of the Air & Waste Management Association

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Stainless steel plant dust is a hazardous by-product of the stainless steelmaking industry. It contains large amounts of Fe, Cr, and Ni, and can be potentially recycled as a raw material of inorganic black pigment in the ceramic industry to reduce environmental contamination and produce value-added products. In this paper, ceramic tiles prepared with black pigment through recycling of stainless steel plant dust were characterized in terms of physical properties, such as bulk density, water absorption, apparent porosity, and volume shrinkage ratio, as well as the longterm leaching behavior of heavy metals (Cr, Ni, Pb, Cd, and Zn). The results show that good physical properties of ceramic tiles can be obtained with 8% pigments addition, sample preparation pressure of 25 MPa, and sintering at 1200 ºC for 30 min. The major controlling leaching mechanism for Cr and Pb from the ceramic tiles is initial surface wash-off, while the leaching behavior of Cd, Ni, and Zn from the stabilized product is mainly controlled by matrix diffusion. The reutilization process is safe and effective to immobilize the heavy metals in the stainless steel plant dust.Implications: Stainless steel plant dust is considered as a hazardous material, and it can be potentially recycled for black pigment preparation in the ceramic industry. This paper provides the characteristics of the ceramic tiles with black pigment through recycling stainless steel plant dust, and the long-term leaching behavior and controlling leaching mechanisms of heavy metals from the ceramic tile. The effectiveness of the treatment process is also evaluated. PAPER HISTORY

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Long and short-term performance of a stabilized/solidified electric arc furnace dust

Cited by 37 publications

References 23 publications

Steel foundry electric arc furnace dust management: Stabilization by using lime and Portland cement

Steel foundry electric arc furnace dust management: Stabilization by using lime and Portland cement

Stabilization and solidification of electric arc furnace dust originating from steel industry by using low grade MgO

Ceramic tiles with black pigment made from stainless steel plant dust: Physical properties and long-term leaching behavior of heavy metals

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