???????????? ????????? (APT) ?????
????? paratungstate ????????? (APT) ??? ????? ??????:
???? |
APT - 0 |
|||
???????(%Max.) |
WO3?????(≥%) |
88.5 |
||
??? |
Max |
??? |
Max |
|
Al |
0.0005 |
Na |
0.0010 |
|
As |
0.0010 |
Ni |
0.0005 |
|
Bi |
0.0001 |
K |
0.0010 |
|
Ca |
0.0010 |
P |
0.0007 |
|
Cd |
0.0010 |
Pb |
0.0001 |
|
Cr |
0.0010 |
S |
0.0008 |
|
Co |
0.0010 |
Sb |
0.0005 |
|
Cu |
0.0003 |
Si |
0.0010 |
|
Fe |
0.0010 |
Sn |
0.0002 |
|
Mg |
0.0005 |
Ti |
0.0010 |
|
Mn |
0.0005 |
V |
0.0010 |
|
Mo |
0.0020 |
Blanch loss |
11.5 |
|
???????? ??? ?????:
?????? ??? ????? ???????? ????????? ?? WO2.72 (?? W18O49) ? ????? ?? ????? ?? ????? ???????? ? VTO ???????? ? ?? ????? ????? ??? ????????? ? ????? ????????? ?? ????????? ????????? ?????.
???????? ????????. ???????: ????? ?????? Na2WO4 ? 2H2O ?? ????? ???? ?? ?????? ?? ?????? ?? ????. ?? ?????? ????? ????? ??????? ???????? ?? ??????? ??????? ????? ?? ????? ?????? ???????? ?????? ?????????? ???????? ???????
? ???????? ?? ????? ?????. ?????? ????? ??????????? ?????????? ??????? ??? ???? ????? ?????? ???? 600 ° C. ????? ?WO3? ???????? (VI) ?????? ??? ????? ??? ????? ????? ?? ?? ?? ??????????? ????? ?? ???????? ?????? ?????? ?????? ?????? ???? ?????. ?? ????? ???? ?? ????? ????? ???????? ?? ?? ??? ?? ??????? ?? ??? ??? ??????? ???????? ??????.
??? ?????????? ??? ????? ??????? ?? ???? ????? ????????? WO3. ???? ???? ???????????? ?? WO3.H2O? ??? ??????? ???? WO3.2H2O ????? ????????. ?????? ?????? ?????? ?????? ?? WO3.H2O ?? ????? ?? WO5 ????? octahedrally (H2O) ????? 4 ??? ????? ?? shared.the .
0.6um ???? ????? ???????? ? ?????? ???????? ? ????? ????? ???? ?????? ? ?????? ?? ???? ????? ?????? ? ?????? ????? ?? 0.6-1.0g / cm3 .