Hydrometallurgical extraction of zinc from zinc ferrites
TL;DR: In this article, the authors proposed a process to extract zinc from zinc ferrites contained in electric arc furnaces (EAF) dusts without destroying the iron oxide matrix, which can be recycled in the steel industry.
About: This article is published in Hydrometallurgy.The article was published on 2003-07-01. It has received 176 citations till now. The article focuses on the topics: Zinc ferrite & Zinc refining.
Citations
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TL;DR: In this paper, different alkaline leaching techniques were tested in order to dissolve the zinc present in an EAF dust: (i) conventional agitation leaching, (ii) pressure leaching; (iii) conventional leaching following a microwave pretreatment and (iv) leaching with agitation provided by an ultra-sonic probe.
218 citations
TL;DR: A chemical, physical, structural and morphological characterization of the EAFD is carried out by using granulometry analysis, chemical analysis, scanning electron microscopy (SEM), energy dispersive spectroscopy via SEM, X-ray diffraction (XRD) and MössbauerSpectroscopy.
190 citations
TL;DR: In this article, the zinc and lead recovery from zinc plant residue (ZPR) has been investigated and the effect of roasting and leaching parameters on the zinc recovery was first studied.
173 citations
Cites methods from "Hydrometallurgical extraction of zi..."
...…(Boyanov and Dimitrov, 1998; Guerrero et al., 1997) and chloride leaching processes have been employed using either NaCl (Raghavan et al., 1998; Raghavan et al., 2000; Andrews et al., 2000), or MgCl2 and CaCl2 (Sinadinovic et al., 1997), or FeCl3 (Andrews et al., 2000; Leclerc et al., 2003)....
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TL;DR: The highest zinc extraction was obtained at low acid concentration of less than 1 ǫmol/L in the order of H 2 SO 4 followed by HNO 3 and then HCl as discussed by the authors.
116 citations
TL;DR: In this article, the hydrometallurgical extraction of zinc from steel dust and sludge was studied and the results showed that over 99% of the zinc was extracted from the sludge with 0.3 M HCl solution but the amount of iron in the solution was higher than for the pure ferrite treatment.
111 citations
References
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TL;DR: In this article, an electric arc furnace (EAF) flue dusts characterization and a systematic study of sulphuric acid leaching to obtain the reaction rates of dissolution were examined.
107 citations
TL;DR: The results of the normalized leaching test AFNOR X31-210 conducted on the leaching residues, shows that all the samples meet acceptance thresholds for hazardous wastes landfill, however, the residues contain a considerable amount of zinc as ZnFe2O4.
97 citations
TL;DR: In this paper, the precipitation of hematite from ferric chloride media was systematically investigated in a series of autoclave experiments and it was shown that the filterability of the fine precipitated hematites is greatly improved by the presence of hemetite seed.
75 citations
TL;DR: In this article, the results of standard tests on fresh concrete indicate that EAFD can be used as an effective set retarder and other standard tests appear to indicate that it will enhance engineering properties of hardened concrete without any side-effects.
74 citations