A novel biphasic leaching approach for the recovery of Cu and Zn from polymetallic bulk concentrate
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
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| Title |
A novel biphasic leaching approach for the recovery of Cu and Zn from polymetallic bulk concentrate
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| Creator |
Patel, Bhargav C
Sinha, Manish K Tipre, D R Abhilash, Dave, S R |
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| Subject |
Hydrometallurgy
Minerals and Mining Waste Management |
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| Description |
In scale-up biphasic leaching process of polymetallic concentrate, the ferric bioregeneration cycles were performed in 15.0 L down flow packed bed reactor; whereas the chemical leaching cycles were done using the biogenerated ferric in an indigenously designed 10.0 L stirred tank reactor. The consortium took 25 cycles for proper biofilm formation. It showed highest iron oxidation rate (IOR) of 3908.21 mg/L/h at 25th cycle under no polymetallic stress. Even under stressed conditions, it was 2650 to 558 mg/L/h. Cu extractions were 86.63 to 46.51 and Zn extractions were 67.89 to 14.74% in 1st to 4th cycle respectively. The developed consortium exhibited 17 to 51 times higher IOR compared to original wild type consortium. Extraction isotherm for zinc with 30% Cyanex® 301 indicated that a total of two stages are required for its complete extraction using the phase ratio of 2:1 at equilibrium pH 1.5, leaving behind Fe(II) in the raffinate.
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| Publisher |
Elsevier
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| Date |
2014-02-05
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://eprints.nmlindia.org/6831/1/Abhilash-Bio-2014.pdf
Patel, Bhargav C and Sinha, Manish K and Tipre, D R and Abhilash, and Dave, S R (2014) A novel biphasic leaching approach for the recovery of Cu and Zn from polymetallic bulk concentrate. Bioresource Technology, 157 (IF-5.039). pp. 310-315. |
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| Relation |
http://dx.doi.org/10.1016/j.biortech.2014.01.101
http://eprints.nmlindia.org/6831/ |
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