The extraction and refining of tantalum, including the separation from niobium in these various tantalum-containing mineral concentrates, is generally accomplished by treating the ores with a mixture of hydrofluoric and sulfuric acids at elevated temperatures.
Again, you seem to be on another planet. Is it not PLS that separates the tantalum and packages it?
Ann: December 2020 Quarterly Activities Report, page-129
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