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Statements

Subject Item
n2:RIV%2F61989100%3A27640%2F00%3A00001305%21RIV%2F2002%2FMSM%2F276402%2FN
rdf:type
skos:Concept n16:Vysledek
dcterms: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. 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.
dcterms:title
Relation Between the Zn (II) Chemical Speciation and its Acid Leaching from Fine Grained Metallurgical Wastes Relation Between the Zn (II) Chemical Speciation and its Acid Leaching from Fine Grained Metallurgical Wastes
skos:prefLabel
Relation Between the Zn (II) Chemical Speciation and its Acid Leaching from Fine Grained Metallurgical Wastes Relation Between the Zn (II) Chemical Speciation and its Acid Leaching from Fine Grained Metallurgical Wastes
skos:notation
RIV/61989100:27640/00:00001305!RIV/2002/MSM/276402/N
n3:strany
310-317
n3:aktivita
n18:Z
n3:aktivity
Z(MSM 279000017)
n3:cisloPeriodika
4
n3:dodaniDat
n9:2002
n3:domaciTvurceVysledku
n4:5153115 n4:3462633 n4:8807876
n3:druhVysledku
n11:J
n3:duvernostUdaju
n7:S
n3:entitaPredkladatele
n15:predkladatel
n3:idSjednocenehoVysledku
725030
n3:idVysledku
RIV/61989100:27640/00:00001305
n3:jazykVysledku
n13:eng
n3:klicovaSlova
Metallurgical Waste, Chemical Speciation of zink
n3:klicoveSlovo
n8:Chemical%20Speciation%20of%20zink n8:Metallurgical%20Waste
n3:kodStatuVydavatele
SK - Slovenská republika
n3:kontrolniKodProRIV
[08CAC470E02D]
n3:nazevZdroje
Acta Metallurgica Slovaca
n3:obor
n17:DM
n3:pocetDomacichTvurcuVysledku
3
n3:pocetTvurcuVysledku
3
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:rokUplatneniVysledku
n9:2000
n3:svazekPeriodika
6
n3:tvurceVysledku
Kulveitová, Hana Leško, Juraj Seidlerová, Jana
n3:zamer
n10:MSM%20279000017
s:issn
1335-1532
s:numberOfPages
8
n12:organizacniJednotka
27640