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The object of this study is to find optimal condition for flotation according to the various condition of experiment for removal As and Cd on the tailing of Geumpung Mine using xanthate collector. The highest removal ratio of As and Cd in the tailing is investigated in the following conditions; frother : AF 65, dosage of frother : 250 g/ton, pH : pH 6, dosage of collector : 300 g/ton, rpm : 1,500 rpm, and pulp density : 25%. Under the aforementioned conditions, the removal ratio of As and Cd was over 70%. Finally, the result of flotation decreased As content to 6.75 mg/kg and Cd content to 2.86 mg/kg, satisfying the warning criteria (As: 25 mg/kg, Cd: 4 mg/kg) regulated by the Korean Ministry of Environment.

Study on the Properties of Removal of As and Cd on Tailing of Geumpung Mine Using Xanthate Collector