Recovery of metals from spent NiMH batteries

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F15%3A43901195" target="_blank" >RIV/60461373:22310/15:43901195 - 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
Recovery of metals from spent NiMH batteries
Original language description
Electrode mass of nickel metal hydride (NiMH) batteries was treated hydrometallurgically in order to obtain metal values. The batteries were processed in a cutting mill and the fraction <0.5 mm was obtained by sieving. A mixture of electrode mass originating from different types of batteries contained 51.0 % Ni, 5.9 % Co, 1.1 % Zn, 0.7 % Fe, 2.18 % Mn, 9.2 % La, 4.6 % Ce, 0.7 % Pr and 2.3 % Nd. Leaching of the electrode mass in H2SO4 enabled achieving extraction of 91.5 % Ni, 92.6 % Co and more than 97.5 % rare earth metals (RE). More than 99 % RE were removed from the leach liquor using hydrolytic precipitation up to pH = 1.2. After removing the RE precipitate, the solution was subjected to solvent extraction, which enabled removal of majority of impurities.
Czech name
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Czech description
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Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
19th Conference on Environment and Mineral Processing
ISBN
978-80-248-3753-6
ISSN
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e-ISSN
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Number of pages
5
Pages from-to
197-202
Publisher name
Vysoká škola báňská - Technická univerzita Ostrava
Place of publication
Ostrava
Event location
Ostrava
Event date
Jun 4, 2015
Type of event by nationality
EUR - Evropská akce
UT code for WoS article
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