Amunium Paratungstate (APT) ???? ?????
???? ?????? ???? ???????? ?? ????????? ??????? (???? ?????? ????? ???? ??????, ???????????, ??????? ??? '), ???? ???? ???????? ????? ?? paratungstate ???????, ????? ?? ????????? ?? ??????, ?? ??????, ????? ?????, ??? ????? ??? ???????. ??????, ???? ?? ???? ?? ?????? ?? ?????? ????? ?? ???? ???????? ?? paratungstate ??????? ??????.
????????1. ????????
| No. | ????? ??????? ????????/ ℃ | ?????? ??????/ g·cm-3 |
| 1 | 60-70 | 1.36-1.65 |
| 2 | 84-88 | 1.60-1.70 |
| 3 | 90-94 | 1.66-1.85 |
| 4 | 95-100 | 1.82-2.01 |
2. ????? ???????????
| No. | ?????? ?????? / r·min-1 | FSSS ???????/ μm |
| 1 | 85 | 30 |
| 2 | 62 | 40 |
| 3 | 50 | 42 |
| 4 | 40 | 45 |
3. Agitation Time
| No. | ??? ??????/ min | ?????? ??????/ g·cm-3 |
| 1 | 30 | 1.40-1.80 |
| 2 | 60 | 1.80-1.95 |
| 3 | 120 | 1.66-2.20 |
| 4 | ????? ????? | 2.20-2.40 |
4. ?????
| No. | (NH4)2WO4 ????? g/L |
NH4Cl g/L |
NH3 g/L |
FSSS ??????? / μm |
| 1 | 125 | 100 | 30 | 30 |
| 2 | 115 | 65 | 40 | 39 |
| 3 | 113 | 40 | 40 | 42 |
| 4 | 120 | 80 | 40 | 38 |
| 5 | 114 | 60 | 40 | 40 |
5.?????
??? ?????, ??? ?????.
?????? ??????:
???? ?????? ??????? ????? ??? 2.72 (?? W18O49), ??? ??? ??? ?? ?????? ???????, ????? VTO, ??? ???? ????? ???? ????, ??? ???? ???? ??? ?? ???? ????.
??????? paratungstate ??? ???? ????, ????? ?????? ?????, ???? ??? ????? ?? ?????? ?? ??????????? ???? ????? ?? trioxide ??????? ?? ???? ??????? ?????? ???? ??????? ????.
????? Tungstic ?????? ?????? ????????? ?? ??????? trioxide, WO3. ????? ?????? ?????, ?monohydrate, ??? WO3. h2o, dihydrate ?? 3.2 h2o ???? ??. . ???? ???? ????? ?? WO3 H2O ????? ????? ?? octahedrally ????? WO5 (H2O) ?????? ??? 4 ???????? ???????.
0.6 ??????? ??????? ??????, ?????? ???????, ????? ?? ???? ????? ??????, ????? ????????? ????, ?????? ?????? ?? 0.6-1.0 g/cm3.