Tungsten Concentrate Specification
Grade |
WO3 not less than(%) |
impurities not more than(%) |
|
|||||||||||
S |
P |
As |
Mo |
Mn |
Cu |
Sn |
SiO2 |
Ca |
Sb |
Bi |
Pb |
Fe |
|
|
wolframite special grade-I-2 |
70 |
0.4 |
0.03 |
0.08 |
- |
- |
0.05 |
0.1 |
5 |
4 |
0.05 |
0.05 |
0.05 |
|
wolframite special grade-I-1 |
68 |
0.5 |
0.04 |
0.1 |
|
|
0.06 |
0.15 |
7 |
5 |
0.1 |
0.1 |
0.1 |
|
wolframite A class I |
65 |
0.7 |
0.05 |
0.15 |
|
|
0.13 |
0.2 |
7 |
5 |
|
|
|
|
wolframite A class II |
65 |
0.7 |
0.1 |
0.1 |
0.05 |
|
0.25 |
0.2 |
5 |
3 |
|
|
|
|
|
|
|
P+As |
|
|
|
|
|
|
|
|
|
|
|
wolframite A class III |
65 |
0.8 |
|
0.22 |
0.05 |
|
0.35 |
0.4 |
3.8 |
1 |
|
|
|
|
scheelite special grade-II-2 |
70 |
0.5 |
0.05 |
0.07 |
0.015 |
0.4 |
0.2 |
0.15 |
3 |
|
0.1 |
|
|
2 |
scheelite special grade-II-1 |
70 |
0.6 |
0.1 |
0.1 |
0.02 |
0.5 |
0.25 |
0.2 |
3 |
|
0.2 |
|
|
3 |
test
tungsten concentrate in accordance with GB/T4414-84 packaging tungsten concentrate sampling, sample preparation methods and GB6150.1 ~ 6150.19-85 tungsten concentrate chemical analysis methods the test.
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