Obtaining Nickel and Cobalt from Spent NiMH Batteries

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F15%3A43901194" target="_blank" >RIV/60461373:22310/15:43901194 - 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
Obtaining Nickel and Cobalt from Spent NiMH Batteries
Original language description
Nickel metal hydride (NiMH) batteries represent a great metal value. Their recycling is therefore important not only for environmental, but also for economic reasons. NiMH batteries used in this study were provided by a Czech company, which is responsible for collecting this type of wastes in the Czech Republic. The batteries were processed in a cutting mill. From the resulting material, the fraction <0.5 mm was obtained by sieving. Electrode mass of NiMH batteries was treated hydrometallurgically in order to obtain metal values. 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 was performed in1 and 2 mol/L H2SO4 at liquid-to-solid ratios 10:1 or 20:1 and laboratory temperature as well as at 60 and 80 oC. Extractions of 91.5 % Ni, 92.6 % Co and more than 97.5 % rare earth metals (RE) were achieved. More than 99 % RE were remov
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
JK - Corrosion and material surfaces
OECD FORD branch
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Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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