???         ??????   ??   paratungstate &     ??   ???????  

?????? ????? ???? ????????? ?? ????? ??????? ?? ??????? ??????? ?????? ????? ????? APT ???? ??????? ???? (paratungstate ???????). ????? ????? chromium ??????? APT ??????? ???? ?? ?????? ?????: (1) ???? WO3 ?? ??????; (2) ????? ??? ???? ????, ?????, ?????? ??????? ?????; (3) ???? ???? ????? ??????? ??? ????? ???????, ????? ???? ???? ??? ????? ???????; (4) ???? ?????? ??????? ??????? ????? ???????, ??????? ?????? ???????, ?????? ?? ??? ?????; (5) ???? ?????? ?? ????? ???? 1.1g / cm-3, ????? ?????? ?????, ?????? ?? ??? ?????; ? (6) ???? ?- pH ?? ?????? ??? 6.7-7.0, ????? ?????, ????? ??????. ????? ????? ???? ???? ??????? APT ?? ?????? ??????? ?? ???? APT ?? ???? ???? ????? ???? ???? ????? ????, ???? ???? ????? ???? ?? ?? ???? ???? APT, ?????? ???? ???? ????????? ??? ????; ??? ????? ???? ??????? APT ???? ???? ???? ???? ????? ????? ?? ????? ?????? WC ?????? ??? sintering ?????, ?? ?????? ?? ?????? ??? ?????? ????.

?????? ????? ???? ????? ?? ???? ??????? ??????, ??????? ?????? ????? ????? ????? ???? ? APT (??????? Paratungstate) ??????? ??????? ????. ????? ?????? ???? ?? ???? ? APT ??????? ??????? ???? ????? ??????? ?????: ?, ???? 50% ??????? ????? ????? ????? ??????; b, ????? ?? ???? pH ?? ???? ????? ???? ?? ?????; c, ????? ?????, ????? ????? ???, ?????, ?????, ?????; ?, ???? ?????? ???????, ?????, ????? ???? ????, ?????? ???? ???? ? ??????? ????? ???? ?????, ??????? ????? ???????. ????? ?????? ?? ??? ?????? ?? ?????? ??????? ?? ??????? ????? ??????? ??? ???? ??? ?????? ???? ?? ???? ???? ???? ?????? ?? ????? ?? ????? ????? ? chromium ????? ??????? ??????? ? 1.5 ?"? (L < -1 > ) ???? ????? ??????? ?????, ??? ??? ???? ???? ???? ???? ??? 99.9% ???? ???? ?? ?? ?? ????? ???? ???? ????????, ????? hydroxide ????, ??? ??????, ??????? ?????? ??????. ????? ?????? ?? ??? ?????? ??? ??? ??????????? ???????? ?????? ????? ???? APT ??????? ????- chrom ??? ?? ?????? ??? ?? ????? ?????? ????? ?????? ????? high-end.