Making and prediction of compound cerium concentrate from monazite

Making of Ce concentrate have been done from monazite through leaching using H₂SO₄, quenching, digestion using NaOH, dissolution and oxidation using KBrO₃ or without KBrO₃ and precipitation Ce using NH₄OH. From the data obtained as well and based on the calculation, a compound formed was mixture of Ce (IV) ammonium nitrate which has the molecular formula (NH₄)₂Ce (NO₃)₆ and cerium hydroxide Ce(OH)₄. Impurities contained were Th(OH)₄(NH₄)₂Y(NO₃), H₄N₅O₁₂La, H₁₂N₃Pr, H₁₂N₃NdO₁₅ and N₃O₉Sm. In oxidation using KBrO₃ or without KBrO₃, Ce concentrates were obtained have the same contents and precipitation efficiency. (author)