The Efficient Recovery of Cobalt from Low Grade Refractory Carrollite with Bioleaching Technology

Guo Bao Chen; Hong Ying Yang; Li Jie Zhou

doi:10.4028/www.scientific.net/AMR.825.451

Paper Titles

Substrate Utilisation and Chalcopyrite Concentrate Bioleaching at 60°C in the Presence of Nitrate
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Synthesis of Biogenic Mn Oxide and its Application as Lithium Ion Sieve
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The Bioleaching Characteristics of Chalcopyrite with Different Genetic Types
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The Effect of Ferrous Iron Addition during Tetrathionate Utilisation by Some Sulfobacillus Species
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The Efficient Recovery of Cobalt from Low Grade Refractory Carrollite with Bioleaching Technology
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The Impact of Drip Irrigation on Heap Hydrology and Microbial Colonies in Bioleaching
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The Influence of Pyrite on Galvanic Assisted Leaching of Chalcocite Concentrates
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Treatment of a Nickel-Copper Sulphide Concentrate Using Bioleaching
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True Growth Rate Kinetics: An Account of the Colonisation and Transport of Microorganisms on Whole Low Grade Ore, at the Agglomerate Scale
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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 825The Efficient Recovery of Cobalt from Low Grade...

The Efficient Recovery of Cobalt from Low Grade Refractory Carrollite with Bioleaching Technology

Abstract:

Cobalt, having many diverse and critical uses, is an essential metal in today's society. However, the recovery of cobalt is difficult due to its associated mineral characteristics. A biohydrometallurgical process has been developed for cobalt recovery from low grade refractory carrollite. After direct oxidation for 6 days, 96.51 % Co and 26.32 % Cu were extracted from the ore using a pulp density of 10 %. The bioleaching solution contained 22.62 gL^-1 ferric iron while the concentration of cobalt was only 0.83 gL^-1. Therefore, a goethite deironization process was then conducted. Different conditions, such as pH value, temperature, standing time and oxidant concentration were studied in detail. The results showed that when the pH value was 4.0, oxidation temperature was 70 °C, standing time was 1 h, and oxidant concentration was 8%, then the iron removal and the loss of cobalt were 99.9 % and 0.5 %, respectively. The goethite precipitate had good filterability. The sum recovery of cobalt in the whole extraction process attained more than 95 %. The biohydrometallurgy process for the recovery of cobalt has economic and environmental advantages over the other methods.

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Periodical:

Advanced Materials Research (Volume 825)

Pages:

451-454

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.825.451

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Online since:

October 2013

Authors:

Guo Bao Chen, Hong Ying Yang, Li Jie Zhou

Keywords:

Bioleaching Technology, Carrollite, Goethite, Removalof Iron

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