Table 1.
Phase Composition of chicken eggshells after calcination.
| Component | Composition (%) |
|---|---|
| CaO | 97.80 |
| P2O5 | 0.29 |
| Fe2O3 | 0.01 |
| SiO2 | 0.16 |
| K2O | 0.18 |
| SO3 | 0.16 |
| Al2O3 | 0.18 |
| MgO | 1.17 |
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