???????? ???????? ????? ???????
?????? ??????????: WO2.72（or W18O49）
??????: ????? ????? ??????
????? ?????:1.75g/ cm3
???????: ?????? ????? ?????? ????? ????????.
???????? ???????? ????? ???????
| ????（%） | 99.5 | |
| ??????? Max（%） | Sn | 0.5 |
| S | 0.5 | |
| Cu | 0.1 | |
| Mo | 10 | |
| Bi | 0.5 | |
| As | 5 | |
| P | 5 | |
| Si | 5 | |
| Ca | 5 | |
| Mn | 1 | |
| Pb | 0.5 | |
| Fe | 5 | |
| Ti | 2 | |
| Mg | 2 | |
| Na | 4 | |
| K | 6 | |
| Cr | 2 | |
| V | 2 | |
| Co | 2 | |
| Ni | 2 | |
| Al | 2 | |
| Cd | 0.5 | |
???????? ??? ?????:
???????? ????? (w2o3) ?? ???? (??? ???? ???????? ???????? ????????? ?????? ????).
???? ???????? ???????? ????? ????? ? ????.??? ???? ????? ??? ???????? ????????? ???????? ???????? ???????? ??????? ???????? ?????? ?? ???????? ????? ????????? ?? ??? ?????.
????? ????? ???????? ?? ?????? ????? ???????? ??????? ?????? ?????????? ????? ???????? ?????.
???????? ????? ??? ???? ???? ?? ?????? ??????? ????? ??? 0.007 ? ????? ???????? ??????????? ????? 55% ?? ???? ?????? ???? ????? ??????????? ?? ?????? ?????.