鉱物処理

[3609] 酸化銅（I)浸出に及ぼす酸素の影響

^○柳庚槿¹ (1.韓国海洋大学)

司会:広吉直樹(北海道大学)

キーワード：PCB, disproportionation, cuprous oxide, sulfuric aicd leaching

The effect of oxygen addition on the leaching of copper powder, obtained from the recycling process of PCB, was investigated to recover valuable metals efficiently from the powder. The copper powder was oxidized partly, and consists of copper metal and Cu₂O. During the leaching of cuprous oxide in sulfuric acid, cuprous ions change into copper and cupric ion by disproportionation. However, the addition of oxygen accelerates the leaching of Cu₂O because oxygen acts as electron-acceptor.