Characterization and leachability of electric arc furnace dust made from remelting of stainless steel

Laforest, Guylaine; Duchesne, Josée

doi:10.1016/j.jhazmat.2005.11.037

Cited by 66 publications

(31 citation statements)

References 8 publications

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“…For instance, there are a lot of investigators who dedicated to regeneration of valuable elements out of a great variety of industrial wastes such as carbon steel EAF dust, [2][3][4][5][6][7][8] electronic waste, 9) MSWI etc. [10][11][12][13] And the processing methods involve pyrometallurgy, hydrometallurgy and biometallurgy.…”

Section: Introductionmentioning

confidence: 99%

Separation and Recovery of Potassium Chloride from Sintering Dust of Ironmaking Works

2009

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Sintering plant in iron and steel making company generates very fine metal-containing dusts which can present major environmental problems. This paper describes experimental work on a relatively simple and inexpensive process for recovering the potassium chloride and upgrading the iron level of dust from a Chinese plant, to produce saleable potassium chloride product and environmentally safe waste products for reuse. The dust contained about 10-20 % potassium as potassium chloride, 20 % iron as iron oxides, plus small quantities of lead, copper, cadmium, zinc and other materials. Individual particles of the dust were commonly aggregates of various shapes. Multi-stage countercurrent leaching was taken to completely remove potassium chloride in the ESP dust, but leave iron in the leach residual. With the help of sodium sulfide precipitation, the leached heavy metals were removed from the leaching solutions and a mixture solution which can be perceived as system KCl-NaCl-CaCl 2 -H 2 O was left. Then potassium chloride in the system can be separated and recovered by fractional crystallization. At last the mother liquor was returned to the leaching process as leaching agent together with new tap water. This proposed flow sheet was proved feasible through construction of the demonstration unit in the lab, and KCl product with a purity of 96.5 % was obtained.

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Section: Introductionmentioning

confidence: 99%

Separation and Recovery of Potassium Chloride from Sintering Dust of Ironmaking Works

2009

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“…Considering the hazardous wastes generated by the stainless steelmaking processes, around 10-20 kg of dust is generated per ton of stainless steel produced in the electric arc furnace [11]. Such material contains iron, chromium and nickel, and it is normally classified as hazardous waste due to the presence of chromium.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the fine fraction of the argon oxygen decarburization with lance (AOD-L) sludge generated by the stainless steelmaking industry

Majuste

Mansur

2008

Journal of Hazardous Materials

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“…Cr is a metal difficult to stabilize in some wastes, mainly when this element is in hexavalent form, which is much more soluble and mobile than the trivalent form. This behaviour has been described in a recent study related to the leachability of EAFD waste [29]. For this reason, in some chromium containing wastes, to guarantee their stabilization, a previous reduction stage of the metal, by means of the treatment of the waste with some appropriate reducing agent becomes necessary [30].…”

Section: Influence Of the Setting Conditionsmentioning

confidence: 77%

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

Fernández‐Pereira

Luna-Galiano

Rodríguez‐Piñero

et al. 2007

Journal of Hazardous Materials

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Characterization and leachability of electric arc furnace dust made from remelting of stainless steel

Cited by 66 publications

References 8 publications

Separation and Recovery of Potassium Chloride from Sintering Dust of Ironmaking Works

Separation and Recovery of Potassium Chloride from Sintering Dust of Ironmaking Works

Characterization of the fine fraction of the argon oxygen decarburization with lance (AOD-L) sludge generated by the stainless steelmaking industry

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

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