No | Phosphate ore Type | Number of Samples | Comments |
Type one | Phosphate rock including Lucinite or aluminophosphate ore CaO% ≤ 12%, Al2O3% ≥ 20%, P2O5% ≥ 18% | 31 | Should be beneficiated before producing phosphoric acid. Can be used to produce phosphoric acid by chemical method when the content of P2O5 is more than 30%. Two samples have a P2O5 content higher than 30% The technical processes are complicated and the costs of production are high. |
Type two | Apatite rock including aluminophosphate CaO% ≥ 25%, Al2O3% ≤ 10%, P2O5% ≥ 20%, 12% ≤ SiO2 ≤ 35% | 1 | Can be used to produce qualified concentrated phosphate rock by floatation method when it can meet the requirement (CaO% ≥ 30%, Al2O3% ≤ 7%, P2O5% ≥ 25%, SiO2% ≤ 30%). The technical processes are simple and the costs of production are reasonable. |
Type three | Silica ore including phosphorus SiO2% ≥ 40%, P2O5% ≤ 10% | 9 | Cannot be used to produce phosphoric acid |
Iron ore including phosphorus Fe2O3% ≥ 20%, P2O5% ≤ 10% | 3 | Cannot be used to produce phosphoric acid | |
Other | -------------- | 12 | ------------------------------- |
Total Number of Samples | 56 |
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