14:30-17:00　ポスター発表（鉱物処理／リサイクル）［9/13(水) PM ポスター会場］

[P022C] （学生発表：修士課程）銅抑制剤MBSを用いたCu-Mo選択浮遊選別に関する研究

○アクバルショー　ウルマスゾーダ¹、グディ パンディ ウィスヌ スーヤンタラ²、三木 一²、越智 大司³、青木 悠二³、浦紅美花³、ダニヤロフ　ベルダック¹、エスカ プトラ ドゥイタマ¹、笹木 圭子²、平島 剛² (1. 九州大学大学院工学府、2. 九州大学大学院工学研究院　地球資源システム工学部門、3. 住友金属鉱山株式会社)

キーワード：選択浮遊選別、海水、銅、モリブデン、MBS

The present research aimed to examine the effectiveness of sodium metabisulfite (Na2S2O5) as a copper depressant in the process of selective Cu-Mo flotation in seawater, specifically under weakly acidic and neutral pH conditions. The experimental findings demonstrated that the implementation of 3.6 kg/t Na2S2O5 in seawater at a pH of 5.5 resulted in a substantial decrease in copper recovery, reducing it from 97% to 11% and led to a little decline in molybdenum recovery, from 98% to 94%. Consequently, the Cu-Mo separation efficiency was determined to be 83%. These flotation data demonstrate that Na2S2O5 treatment in seawater preferentially decreased the floatability of copper minerals, leading molybdenum to be separated under weakly acidic conditions.