Relation Between the Zn (II) Chemical Speciation and its Acid Leaching from Fine Grained Metallurgical Wastes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F00%3A00001305" target="_blank" >RIV/61989100:27640/00:00001305 - 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

Relation Between the Zn (II) Chemical Speciation and its Acid Leaching from Fine Grained Metallurgical Wastes

Original language description

The forms of zinc in the blast furnace and steelmaking sludge were determined applying the sequential extraction method of chemical speciation. In the blast furnace sludge zinc is largely present in the ion-exchange and superficially occluded form and that is why its sepatation by acid leaching may be successful. These assumptions were proved when studying the heterogeneous acid-base equilibrium in discontinual static leaching under mild acidic conditions - c(HCl) max. 0.1 mol.dm-3, when 77% of zinc were extracted and iron practically did not pass into solution. As for the steelmaking sludge, an unambiguous correlation between the chemical speciation and acid leaching has not been found. Buffering equilibrium is establised at pH 5,5 and that is connected with the presence of iron in the lower oxidation states, especially in the fe(II) form.

Czech name

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Czech description

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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

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2000

Confidentiality

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

Name of the periodical

Acta Metallurgica Slovaca

ISSN

1335-1532

e-ISSN

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Volume of the periodical

6

Issue of the periodical within the volume

4

Country of publishing house

SK - SLOVAKIA

Number of pages

8

Pages from-to

310-317

UT code for WoS article

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EID of the result in the Scopus database

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