Basic Zinc Carbonate 57.5% item index:
ITEMS
|
INDEX
|
High-Class
|
First-Class
|
Qualified
|
Zn % ≥
|
57.5
|
57.0
|
56.5
|
|
25.0-28.0
|
25.0-30.0
|
25.0-32.0
|
Pb content % ≤
|
0.04
|
0.05
|
0.05
|
Moisture ≤
|
2.5
|
3.5
|
5.0
|
So4 % ≤
|
0.60
|
0.80
|
-
|
Fineness through 75 um Screen ≥
|
95.0
|
94.0
|
93.0
|
Cd content % ≤
|
0.10
|
-
|
-
|