???? ????? ???? ????? ??? ????? paratungstate ??????? (APT) ?? ????? ????, ??? ???? ????? ?? ??????? ???? ?????, ???? ????? ???????? ? ??????? ???? ????? ??? ??? ???? ??????? ???????, ????? ??? ???? APT ?? ??? ??????? ?????, ?? ?????? ??? ?????:

1. ????? ??????? ???? ????? ?? ??? ???? ?? ??????? ???? (Na ₂ WO ₄ ) ? ?????? ??????? ?? ??? ???? ????? (NaCO ₃ ), ? ????? ??? ???? ?? ?????, ?????, ????? ????? ???? ????? ????? ??????? ???? ??, ??????? ?????? ?? ??????:
Na₂CO₃+FeWO₄=FeO↓+ Na₂WO₄+CO₂↑
Na₂CO₃+MnWO₄=MnO↓+ Na₂WO₄+CO₂↑;
2. ????? ???? ????? (CaCl ₂ ) ????? ???? ????? ??????? ???? ????? ??????? ?????? ??????? ???? (CaWO ₄ ), ?????? ?? scheelite ????????, ?????? ??? ?????? You
Na₂WO₄+ CaCl₂=CaWO₄↓+2NaCl
3. ???? ?? scheelite ???????? ?? ????? ??? ???? ????? ????????, ????? ??? ?????? ??? ?????? ???? ???? ????? ????? ??????? ???????, ?????? ?? ???????? ??????? ??????? ?????, ?????? ??? ??????:
CaWO₄+2HCl=H2WO₄↓+ CaCl₂ H₂WO₄+2NH₄OH=(NH₄)₂WO₄+2H₂O
4. ????? ??????? ????? ??????? ??????? ??? ???? APT.