?????? ???????? ?????? ???? ??????? submicron ?? ????? ?????? ????? ????, ????? ??????? ???, ???? ?????? ??????? ?????, ????? ??????? ????? ????, ????? ?????, ???? ????? ?????, ????? ???????, ?????????? ??? ????, ?????????? ?????. ?????? ??? ?? ??????? ??? ????? ??? ??, ????? ?????? ?????, ?????? ????? ?????, ?????? ????? ??????, ?? ??? ????? ????? ???????.

????? ???????? ????? ammonium paratungstate ????? ????? ????? subicron ????? ??????? ?????? ?? ??????? ?? ????? ????, ???? ???? ???????? ?????, ?? ????? ???? ???, ?? ????? ??????? ?????, ???? ???? ????? ??????? ????? ?????. ????? ?????? ??? ??????, ??? ???????? ?? ??????? ??????? ????? ????? calcination, ??? ????? ??? ???? ?? ???? ??????.

???? ????
(1) ?????, paratungstate ??????? ????? ? 800 ????? ?????? ? ????? ?????? ????? ???? ???? ???? 10 ???? ? 800 ????? ??????, ?????? ??????? ???? ?????.
(2) ?????? VTO ????? ? (1) ??? ?????? ?????? ???? ???????
(3) ????? ???? ??????? ? (2) ?? ??? ????? ? 500 ℃, ???? ????????? ????? 500 ℃, ????? ?? ?? ?? ???? 10 ????, trioxide ??????? ?????.
(4) ?????? ?? ??????? ??????? ????? ???? ??????, ????? ???? ???????
(5) ????? ???? ??????? ? (4) ????? ?? ?????? ? (3), ????? ????? ????, ????? ??????? ???????.
(6) ????? ??????? ??????? ???? (5) ??? ????? ?? ?????? ? (2), ?? ????? ?? ????? ??????? ????? ???? ???????.