Iron removal from sulphate liquors after hydrometallurgical processing of waste Zn/MnO2 batteries

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Iron removal from sulphate liquors after hydrometallurgical processing of waste Zn/MnO2 batteries

Popis výsledku v původním jazyce

Iron is usually present in leach solutions and its elimination is a major operational problem in zinc hydrometallurgy. The aim of this work was to compare the course of iron precipitation from sulphate leach liquors depending on pH and neutralizing agents. These solutions containing about 44 g /dm3 Zn, 15 g/ dm3 Mn, 0,5 g/dm3 Fe and negligible content of Cu, Ni and Cd originated from leaching electrode materials from waste Zn/MnO2 batteries in H2SO4. Decrease of iron concentration was studied during pHadjustment by solid K2CO3 and/or Na2CO3 and also electrode materials of different grain size. In the case of using electrode material as a neutralizing agent the iron precipitation was completed at pH about 3,5 whilst iron precipitation using Na2CO3 wascompleted at pH about 4,0. Grain size of used electrode materials did not affected iron precipitation rate. Further advantage of using electrode material as a neutralizing agent is in better filterability of the precipitates obtained comp

Název v anglickém jazyce

Iron removal from sulphate liquors after hydrometallurgical processing of waste Zn/MnO2 batteries

Popis výsledku anglicky

Iron is usually present in leach solutions and its elimination is a major operational problem in zinc hydrometallurgy. The aim of this work was to compare the course of iron precipitation from sulphate leach liquors depending on pH and neutralizing agents. These solutions containing about 44 g /dm3 Zn, 15 g/ dm3 Mn, 0,5 g/dm3 Fe and negligible content of Cu, Ni and Cd originated from leaching electrode materials from waste Zn/MnO2 batteries in H2SO4. Decrease of iron concentration was studied during pHadjustment by solid K2CO3 and/or Na2CO3 and also electrode materials of different grain size. In the case of using electrode material as a neutralizing agent the iron precipitation was completed at pH about 3,5 whilst iron precipitation using Na2CO3 wascompleted at pH about 4,0. Grain size of used electrode materials did not affected iron precipitation rate. Further advantage of using electrode material as a neutralizing agent is in better filterability of the precipitates obtained comp

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of 19th International Students' Day of Metallurgy

ISBN

978-3-00-037493-7

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

275-281

Název nakladatele

Dzierzon Druck

Místo vydání

Freiberg

Místo konání akce

Freiberg

Datum konání akce

15. 3. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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