???????? ??????? ???????
??????: Na2WO4?2H2O.2H2O
???????: ????? ????? ????? ?????? ???????? ???????? structure.In ?????? ??????? ??????.
Spesification:
| ???? | ???? | ClassⅠ | ClassⅡ |
| Na2WO4.2H2O | 99 | 98 | 97 |
| Mo | 0.001 | 0.02 | -- |
| AS | 0.001 | 0.001 | 0.001 |
| Cu | 0.0005 | 0.001 | 0.001 |
| Fe | 0.001 | 0.001 | 0.005 |
| Si | 0.004 | 0.04 | 0.04 |
| ?????? ??? ????? ??????? | 0.005 | 0.05 | 0.05 |
| PH | 8.5-9 | 8.5-9 | 8.5-9 |
???????? ??? ?????:
?????? ??? ????? ???????? ????????? ?? WO2.72 (?? W18O49) ? ????? ?? ????? ?? ????? ???????? ? VTO ???????? ? ?? ????? ????? ??? ????????? ? ????? ????????? ?? ????????? ????????? ?????.
? ???????? ?? ????? ?????. ?????? ????? ??????????? ?????????? ??????? ??? ???? ????? ?????? ???? 600 ° C. ????? ?WO3? ???????? (VI) ?????? ??? ????? ??? ????? ????? ?? ?? ?? ??????????? ????? ?? ???????? ?????? ?????? ?????? ?????? ???? ?????. ?? ????? ???? ?? ????? ????? ???????? ?? ?? ??? ?? ??????? ?? ??? ??? ??????? ???????? ??????.
??? ?????????? ??? ????? ??????? ?? ???? ????? ????????? WO3. ???? ???? ???????????? ?? WO3.H2O? ??? ??????? ???? WO3.2H2O ????? ????????. ?????? ?????? ?????? ?????? ?? WO3.H2O ?? ????? ?? WO5 ????? octahedrally (H2O) ????? 4 ??? ????? ?? shared.the .
0.6um ???? ????? ???????? ? ?????? ???????? ? ????? ????? ???? ?????? ? ?????? ?? ???? ????? ?????? ? ?????? ????? ?? 0.6-1.0g / cm3 .