Zinc recovery from steel-making wastes by acid pressure leaching and hematite precipitation

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dc.contributor.author Langová, Šárka
dc.contributor.author Matýsek, Dalibor
dc.date.accessioned 2010-04-16T10:50:09Z
dc.date.available 2010-04-16T10:50:09Z
dc.date.issued 2010
dc.identifier.citation Hydrometallurgy. 2010, vol. 101, issues 3-4, p. 171-173. en
dc.identifier.issn 0304-386X
dc.identifier.uri http://hdl.handle.net/10084/78247
dc.description.abstract The hydrometallurgical extraction of zinc from EAF dust and steel-making sludge was studied. These materials were treated with sulphuric acid at elevated pressure using microwave heating. More than 92% of zinc can be leached out using 0.3 M acid solution at 260 °C. Fe(II) remained in solution while most of the Fe(III) was precipitated as hematite. The iron concentration in the leach liquor decreased markedly when hydrogen peroxide solution was added at the start of the experiment. In this case, zinc extraction reached almost 99%. The hydrolytic precipitation of ferric sulphate was investigated at 200 °C for a low iron concentration. The reaction was found to be first-order with respect to Fe(III), and the apparent rate constant was 0.01 min− 1. en
dc.language.iso en en
dc.publisher Elsevier en
dc.relation.ispartofseries Hydrometallurgy en
dc.relation.uri http://dx.doi.org/10.1016/j.hydromet.2010.01.003 en
dc.subject zinc en
dc.subject sulphuric acid en
dc.subject steel-making wastes en
dc.subject leaching en
dc.subject hematite en
dc.subject precipitation en
dc.title Zinc recovery from steel-making wastes by acid pressure leaching and hematite precipitation en
dc.type article en
dc.identifier.location Ve fondu ÚK en
dc.identifier.doi 10.1016/j.hydromet.2010.01.003
dc.identifier.wos 000276255300011

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