ut ral ization : ▁Add ▁N H 3 ( a q ) ▁to ▁remaining ▁mon az ite ▁solution ▁to ▁create ▁rare - ear th - met al ▁precip itate ▁at ▁a ▁p H ▁of ▁ 2 . 3 . ▁ ▁Fil tr ation : ▁Fil tr ate ▁out ▁the ▁RE ▁precip itate ▁to ▁yield ▁the ▁concentr ated ▁rare - ear th ▁metal ▁hydro x ides . ▁ ▁Ne ut ral ization : ▁Add ▁N H 3 ( a q ) ▁to ▁remaining ▁fil tr ate ▁to ▁a ▁p H ▁of ▁ 6 . ▁This ▁creates ▁a ▁u ran ium ▁concentr ated ▁precip itate . ▁ ▁Fil tr ation : ▁Filter ▁remaining ▁solution ▁to ▁yield ▁u ran ium ▁concent rate . ▁ ▁The ▁final ▁products ▁yield ed ▁for ▁this ▁process ▁are ▁thor ium - ph osph ate ▁concent rate , ▁RE ▁hydro x ides , ▁and ▁u ran ium ▁concent rate . ▁ ▁References ▁ ▁Further ▁reading ▁ ▁J . ▁C . ▁B ail ar ▁et ▁al ., ▁Com pre h ensive ▁In organ ic ▁Chem istry , ▁Per g am on ▁Press , ▁ 1 9 7 3 . ▁ ▁R . ▁J . ▁Call ow , ▁The ▁Indust rial ▁Chem istry ▁of ▁the ▁L anth an ons , ▁Y tt rium , ▁Thor ium ▁and ▁U ran ium , ▁Per g am on ▁Press ▁ 1 9 6 7 . ▁. ▁ ▁Gu pta , ▁C . ▁K . ▁and ▁N . ▁Kr ish nam ur thy , ▁Ext active ▁Met all