| 摘要 |
Zircon, ZrSiO4, is retrieved from zircon sand comprised of ZrSiO4 crystals and contaminants including SiO2 and iron by comminuting an aqueous slurry of the sand with iron means exposing the contaminants, admixing the resulting comminuted sand slurry with concentrated nitric and hydrochloric acids producing ferric chloride in solution thereby removing its iron component, admixing the resulting suspension with a flocculating agent agglomerating the suspended particles, admixing the resulting agglomerated mass with concentrated hydrofluoric acid to dissolve its SiO2 component, recovering the resulting ZrSiO4, washing it with water and drying.
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