Magnesium oxide powder
| Magnesium oxide powder（Industrial grade、agricultural grade、 feed grade） | ||||||
|---|---|---|---|---|---|---|
| Item | Specification | |||||
| MgO %min | 65 | 75 | 80 | 85 | 87 | 90 |
| Mg | 39.19 | 45.22 | 48.24 | 51.26 | 52.46 | 54.27 |
| CaO %max | 4 | 4 | 3.5 | 3.5 | 3 | 3 |
| Fe2O3 %max | 1 | 1 | 1 | 1 | 1 | 1 |
| Al2O3 %max | 1 | 1 | 0.8 | 0.5 | 0.5 | 0.5 |
| SiO2 %max | 10 | 6 | 5.5 | 5 | 5 | 5 |
| Burned down %max | 22 | 15 | 10 | 5 | 5 | 4 |
| Active | 42-45 | 49-52 | 52-55 | 56-59 | 57-60 | 59-62 |
| Heavy metal (Pb) | ≤20ppm | |||||
| As | ≤4ppm | |||||
| Size | 60-325mesh | |||||
