Tantalum smelting and Nicholas Serbian counterpart.
put crushed slag, tin And dissolved in HF acid with H2SO4 acid mixture, then add methyl iso butyl ketone (MIBK) to dissolve the Nb and Ta, and Nb showed that dilute H2SO4 acid dissolved in the acid. Then separately adjusted to neutral with NH3 solution will then precipitate sludge can burn Nb2O5.
, for Ta, also dissolved in solvents, methyl iso-butyl ketone. Which can be separated by passing steam into soluble Ta is in the form of H2TaF7 then fill solution, NH3 will precipitate when burnt will Ta2O5 or if the Ta dissolved in the water to fill the solution KCl. cause crystallization in K2TaF7
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