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Item | Datas | Item | Datas | |||
MnO2 | 25-45% | Specific gravity | 3.4g/cm3 | |||
SiO2 | 17-20% | Volume weight | 2.2g/cm3 | |||
Fe | 20% | Silt content | 3% | |||
MnO2 | 10-20% | Solubility in hydrochoric acid | <3.5% | |||
Note:MnO2≥35% can removing iron and manganese, MnO2 ≤30%, can only remove iron from ground water. |