ANOT CÜRUFLARINDAN BAKIRIN GERİ KAZANIMINDA DÜŞÜK ERİME NOKTALI ÇÖZÜCÜ KULLANIMININ ARAŞTIRILMASI

Bu çalışmada, ikincil kaynaklardan bakır tel üretimi yapan bir firmadan temin edilen bakır anot cürufundan bakır geri kazanımı için çevre ve insan sağlığına duyarlı düşük erime noktalı çözücü kullanımı araştırılmıştır. Bakır anot cürufunun fiziksel, kimyasal ve mineralojik karakterizasyonu öncesinde yapılan öğütme işleminde cüruf içindeki metalik bakırın bir kısmı fiziksel olarak ayrılmıştır. Liç deneylerinde son yıllarda hidrometalurjik süreçlerde kullanılan kolin klorür (ChCl) ve üre (1:2) ile hazırlanan düşük erime noktalı solvent çevre duyarlı çözücü olarak kullanılmıştır. Liç deneylerinin sonuçlarına göre fiziksel olarak anot cürufundan ayrılmayan bakır 72 saatlik reaksiyon süresi, 95 oC’lik liç sıcaklığı ve 1/20 katı/sıvı oranı şartlarındaki liç işlemi ile %90 üzerinde ekstrakte edilmiştir. Liç deneylerinden sonrasında çözeltideki demir çözünürlüğünün oldukça düşük seviyede kaldığı görülmüştür. Çalışmada elde edilen sonuçlara göre fiziksel olarak ayırma ve sonrasında ChCl-üre karışımıyla hazırlanan düşük erime noktalı çözücü kullanılarak yapılan liç işlemleri ile bakır anot cürufundan bakır geri kazanımı için çevreci bir çözücü adayı olabileceği ortaya konmuştur.

Anahtar Kelimeler:

Düşük Erime Noktalı Çözücü, Anot Cürufu, Geri Kazanım, Hidrometalurji

INVESTIGATION OF USE OF DEEP EUTETIC SOLVENT ON COPPER RECOVERY FROM COPPER ANODE SLAG

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