Other Oxides Pre-removed from Bangka Tin Slag to Produce a High Grade Tantalum and Niobium Oxides Concentrate: An Advance Study

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Other Oxides Pre-removed from Bangka Tin Slag to Produce a High Grade Tantalum and Niobium Oxides Concentrate: An Advance Study

March 11, 2021 Science and Technology 0

Indonesia, as the world’s second-largest tin producer, has a byproduct of tin output. Tin slag containing tantalum pentoxide (Ta2O5) and niobium pentoxide is one of the byproducts (Nb2O5). Since tantalum and niobium are among the 14 essential materials, recovering them from tin slag would be a viable alternative. The recovery of tantalum pentoxide and niobium pentoxide from tin slag is the subject of this research. One portion of the tin slag sample was sieved only (BTS), while the other was roasted at 900°C, quenched in water, and sieved (BTS-RQS). Thermo gravimetric analysis (TGA) and X-ray Florence were used to classify samples BTS and BTS-RQS (XRF). The BTS-RQS sample was dissolved in hydrofluoric acid (HF) and hydrochloric acid (HCl), washed with distilled water, and then dissolved in sodium hydroxide (NaOH). XRF was used to identify each sample. The BTS sample had the highest recovery of 0.3807 and 0.6978 percent for Ta2O5 and Nb2O5, respectively, from a particle size of -1.00+0.71 and a fraction of 47.29 percent, while the BTS-RQS sample had the highest recovery of 0.3931 and 0.8994 percent for Ta2O5 and Nb2O5, respectively, from a particle size of -0.71+0350 and a fraction of 21%. Tantalum pentoxide and niobium pentoxide have a ratio of 2.01 and 2.09, respectively, when BTS-RQS is dissolved in 8 percent hydro fluoride acid. The yield ratios for tantalum pentoxide and niobium pentoxide are 1.60 and 1.84, respectively, for the sample BTS-RQS, which was dissolved first with 6M hydrochloric acid, washed with distilled water, and then dissolved with sodium hydroxide 10M. In this analysis, it was discovered that dissolving with 8% hydrofluoric acid produces the best ratio.

Author (s) Details

Dr. S. Permana
Centre of Mineral Processing and Corrosion Research, Metallurgical and Materials Engineering Department, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia.

Prof. J. W. Soedarsono
Centre of Mineral Processing and Corrosion Research, Metallurgical and Materials Engineering Department, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia.

Dr. A. Rustandi
Centre of Mineral Processing and Corrosion Research, Metallurgical and Materials Engineering Department, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia.

Dr. A. Maksum
Centre of Mineral Processing and Corrosion Research, Metallurgical and Materials Engineering Department, Faculty of Engineering, Universitas Indonesia, Depok 16424, Indonesia and Mechanical Engineering Department, Politeknik Negeri Jakarta, Depok 16425, Indonesia.

I. Susanto
Mechanical Engineering Department, Politeknik Negeri Jakarta, Depok 16425, Indonesia.

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