Quality index of NiO
| Chemical composition of nickel oxide | % | % |
| Product Name | NiO-765 | NiO-770 |
| Ni | ≥76.5 | ≥77 |
| Cu | ≤0.05 | ≤0.01 |
| Zn | ≤0.05 | ≤0.005 |
| Fe | ≤0.1 | ≤0.05 |
| Co | ≤0.15 | ≤0.05 |
| S | ≤0.03 | ≤0.01 |
| Calcium, magnesium and sodium content | ≤1.0 | ≤0.5 |
| Insoluble substance in hydrochloric acid | ≤0.2 | ≤0.1 |
| 0.154mm sieve residue | ≤0.02 | ≤0.02 |
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