Hydrometallurgical processing of EAF dust for selective recovery of zinc
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
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| Title |
Hydrometallurgical processing of EAF dust for selective recovery of zinc
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| Creator |
Meshram, Pratima
Vasumathi, N Abhilash, Patel, J N |
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| Subject |
Minerals and Mining
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| Description |
Almost 30% of the secondary steel is produced in EAF which is equivalent to 8 million tonnes of EAF dust containing 2 million ton zinc. Around 15-30kg of zinc rich dust is generated per ton of steel, most of which is dumped in a landfill; but stands out as a viable resource of zinc. In view of this, hydrometallurgical process needs to be developed to extract Zn from this high tenor secondary resource. EAF dust from an Indian Steel plant, containing Zn (57% ZnO), Pb (2.97% PbO), Fe (8.49% Fe2O3), 5.80% SiO2, and high chlorides and alkali, was used in our study. Pre-treated dust was subjected to leaching with dilute sulfuric acid resulting in 94% Zn recovery at 50oC in 1h at 10% pulp density. The selective separation of Zn was achieved by solvent extraction of Zn by Cyanex 302.
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| Publisher |
CSIR-CIMFR Dhanbad
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| Date |
2018
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| Type |
Article
PeerReviewed |
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| Relation |
http://eprints.nmlindia.org//7983
http://eprints.nmlindia.org/7984/ |
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| Identifier |
Meshram, Pratima and Vasumathi, N and Abhilash, and Patel, J N (2018) Hydrometallurgical processing of EAF dust for selective recovery of zinc. XVII International Seminar on Mineral Processing Technology(MPT-2018) . pp. 792-796.
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