Atmospheric leaching of steel-making wastes and the precipitation of goethite from the ferric sulphate solution

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F07%3A00016279" target="_blank" >RIV/61989100:27360/07:00016279 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Atmospheric leaching of steel-making wastes and the precipitation of goethite from the ferric sulphate solution

Original language description

The hydrometallurgical processing of EAF dust and steel-making sludge with sulphuric acid was investigated at atmosphericpressure. The influence of acid concentration, temperature, time, and liquid/solid ratio was studied. Zinc extraction reaches almost100% and iron extraction exceeds 90% in 3 M H2SO4 at 80 °C and L/S ratio of 5 after 6 h. A good selectivity with regard to zincaltogether with the relatively high zinc extraction was achieved in 0.1-0.3 M H2SO4 at 80 °C. In that range the zinc extractionwasabout 30% and the Zn/Fe ratio was about 9. The leach liquor was treated using goethite precipitation. The process was modified inorder to minimize the consumption of the alkali and to reduce the sulphur and zinc content in the precipitate.

Czech name

Atmosférické loužení ocelárenských odpadů a goethitové srážení roztoku síranu železitého

Czech description

The hydrometallurgical processing of EAF dust and steel-making sludge with sulphuric acid was investigated at atmosphericpressure. The influence of acid concentration, temperature, time, and liquid/solid ratio was studied. Zinc extraction reaches almost100% and iron extraction exceeds 90% in 3 M H2SO4 at 80 °C and L/S ratio of 5 after 6 h. A good selectivity with regard to zincaltogether with the relatively high zinc extraction was achieved in 0.1-0.3 M H2SO4 at 80 °C. In that range the zinc extractionwasabout 30% and the Zn/Fe ratio was about 9. The leach liquor was treated using goethite precipitation. The process was modified inorder to minimize the consumption of the alkali and to reduce the sulphur and zinc content in the precipitate.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DM - Solid waste and its control, recycling

OECD FORD branch

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Project

<a href="/en/project/GA104%2F06%2F1606" target="_blank" >GA104/06/1606: Metal oxides and ferrites decomposition by hydrogen chloride at higher temperature</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Hydrometallurgy

ISSN

0304-386X

e-ISSN

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Volume of the periodical

87

Issue of the periodical within the volume

3-4

Country of publishing house

AU - AUSTRALIA

Number of pages

6

Pages from-to

157-162

UT code for WoS article

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EID of the result in the Scopus database

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