Deniz İKİZ, MUSTAFA GÜLFEN, ALİ OSMAN AYDIN

The optimum leaching conditions of Artvin Murgul chalcopyrite ore in hypoclorite solution

Artvin-Murgul'dan temin edilmiş olan kalkopirit cevherinin hipoklorit çözeltisindeki optimum liç şartları incelenmiştir. Başlangıç pH'sı, hipoklorit konsantrasyonu, karıştırma hızı, katı/sıvı oranı ve sıcaklığın kalkopirit cevherinden bakırın, çözünürlüğüne etkisi araştırılmıştır. Kalkopirit mineralinin asidik pH değerlerinde hipoklorit çözeltisi ile dengede olan klor ile reaksiyon verdiği bulunmuştur. Çözünme esnasında pH önemli derecede düşmektedir. Optimum liç şartları olarak başlangıç pH'sının 5-6, 4 g/L katı/sıvı oranı için hipoklorit konsantrasyonunun 0,2 N, karıştırma hızının 600 rpm olduğu ve % 50 üzerinde bir sülfat oluşumu olduğu belirlenmiştir.

Artvin-Murgul kalkopirit cevherinin hipoklorit çözeltisindeki optimum liç şartları

The optimum leaching conditions of primary chalcopyrite ore from Artvin-Murgul region in Turkey have been examined in hypochlorite solution. The effects of various parameters as initial pH, hypochlorite concentration, stirring speed, solid/liquid ratio and temperature to the copper dissolution from chalcopyrite were investigated. It was found that chalcopyrite reacted with chlorine generated from hypochlorite in acidic pH values. pH effectively decreased during the dissolution. It was determined that the optimum leaching conditions were initial pH of 5-6, hypochlorite concentration of 0.2 N for 4 g/L solid/liquid ratio, 600 rpm stirring speed and it was seen that sulphate formation was over 50 %.

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