Abstract
As the world demand for pure tin and its compounds are quite steady with an estimated projection of 5% per annum and coupled with its wide array of applications in iron and steel industries in Sub-Sahara Africa, the need for continuous ore purification has become paramount. Thus, the treatment of Nigerian cassiterite ore for industrial value addition by selective acid leaching and solvent extraction was investigated. The effects of leachant concentration, temperature, and particle size on ore dissolution rates were examined. At optimal leaching conditions, 76.7% ore reaction was achieved within 120 min. Tin recovery from the leach liquor by 0.5 mol/L tributyl phosphate (TBP) in kerosene at 27 \( \pm \) 2 °C gave 89.31% efficiency. Stripping of tin from organic-loaded phase recorded 98.9% purity and beneficiated to obtain high-grade tin chloride (SnCl2, melting point: 239.7 °C; density: 3.89 g/cm3), suitable as steel coating indices in some defined indigenous steel industry.
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Acknowledgements
The authors wish to thank CSIR—Institute of Minerals and Materials Technology, Bhubaneswar-751013, India for their benevolence in supplying the TBP extractant used for this study; and the Central Research Laboratories (CRL), University of Ilorin, Nigeria for assisting in aqueous metal analyses by AAS. One of the authors (Prof. Alafara Abdullahi Baba, FCSN, FMSN) sincerely grateful to the Director Training, Mining Cadastral Office, Abuja—Nigeria; KAM Industries (Nig.) Ltd., Ilorin, Kwara State: One of the leading indigenous Steel Industries in Nigeria; Saolad Nig. Ltd. (Building Materials Merchants), Palm Avenue, Mushin, Lagos; and S. S. Amao and Sons Limited (Importer and Exporters of Motor Spare parts and facilities), Ijora, Lagos, Nigeria for their immeasurable supports to attend the TMS 2020 149th Annual Meeting and Exhibition in San Diego, California, U.S.A. between 23 and 27 February 2020.
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Baba, A.A. et al. (2020). Potential of a Nigerian Cassiterite Ore for Industrial Steel Coatings. In: Azimi, G., Forsberg, K., Ouchi, T., Kim, H., Alam, S., Baba, A. (eds) Rare Metal Technology 2020. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-36758-9_19
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