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Tantalum Supply Chain: Bangka Tin Slag Waste as an Alternative Source of Tantalum Extraction

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The current primary source of tantalum in the world becomes critical, so it is necessary to at least find an alternative source. Equilibrium forecast between supply and demand of Ta2O5 in 2015 is minus 79,000 lbs. and in 2016 is minus 212,000 lbs. Bangka tin slag waste can be used as secondary source of tantalum and niobium pentoxide (TNP). Upgrading content of tantalum and niobium oxides (TNO) of BTS waste requires several stages of the processes. It is need a special attention to the stages of the process due to high content of other oxides, contain of radioactive elements and difficulties in separating TNO. Preferably use environmentally friendly solution to reduce toxic waste and pre-remove elements of U and Th done at the beginning of the process for avoid exposure to radiation decrease. Some stages of the process, conclusion this paper, are to give another approach in TNO extraction.
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Keywords: Bangka Tin Slag; Niobium Pentoxide; Pre-Removed; Removal; Tantalum Pentoxide

Document Type: Research Article

Affiliations: Center of Minerals Processing and Corrosion Research, Department of Metallurgical and Materials, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia

Publication date: July 1, 2018

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