An investigation on characterization and floation behavior of a transitional ore containing Galena and Pb Oxide minerals

Yıl 2021, , 169 - 174, 01.09.2021

Mete Tayhan Serdengeçti , Bekir Başkurt Kaan Özçelik Hüseyin Baştürkcü

https://doi.org/10.30797/madencilik.800948

Öz

Flotation behavior of a lead ore sample containing both sulfide and oxide Pb minerals taken from transition zone was investigated. Detailed mineralogical analyses were conducted to determine the type of lead and gangue minerals. The results revealed that galena, cerussite and pulmbogummite were the major lead minerals and observed in close association. In the flotation tests, following determination of the optimum particle size, effects of sulfidization, type of collector, and frother were examined. Potassium amyl xanthate, a modified mercaptan (Aero 412), and and the frother (Dow250) produced the best results. Use of Flash flotation was tested to reduce the flotation time and recover the fast floating liberated galena particles at coarse particle size. A locked cycle flotation test was conducted using the optimum flotation conditions to determine grade and recovery of the final concentrate that can be produced in plant scale operation.

Anahtar Kelimeler

cerussite, galena, flotation, flash, locked cycle

An investigation on characterization and floation behavior of a transitional ore containing Galena and Pb Oxide minerals

Öz

Bu çalışmada hem sülfürlü hem de oksit yapıdaki Pb minerallerini barındıran, geçiş zonuna ait bir kurşun cevherinin flotasyon davranışı incelenmiştir. Detaylı bir mineraloji analizi yapılarak kurşun ve gang mineralleri tespit edilmiştir. Kurşun minerallerinden galen ve serüzit ile birlikte plumbogummit belirlenmiş olup, oksit ve sülfürlü kurşun minerallerinin birlikte bulunduğu bir yapı görülmektedir. Flotasyon testlerinde, öncelikle tane boyutunun etkisi incelenmiş, daha sonra sülfürleştirici, toplayıcı ve köpürtücü reaktiflerin türlerinin kurşun flotasyon üzerindeki etkisi araştırılmıştır. Flotasyon testlerinde potasyum amil ksantat, modifiye merkaptan (Aero 412) ve köpürtücü (Dow250) birlikte kullanıldığı durumda en yüksek verime ulaşılmıştır. Flotasyon süresini kısaltmak ve görece iri boyutta serbestleşen kurşun tanelerinin yüzdürülmesi amacıyla flaş flotasyonun etkisi araştırılarak en uygun açık devre tasarımı yapılmıştır. En iyi flotasyon performansının elde edildiği koşularda kapalı devre flotasyon testi yapılmış ve tesis koşullarında elde edilebilecek nihai konsantre tenör ve verimleri belirlenmiştir.

Anahtar Kelimeler

serüzit, galen, kapalı devre, flotasyon, flaş

Teşekkür

Çalışmaya katkılarından dolayı Prof. Dr. Zafir Ekmekçi’ye teşekkür ederiz.

Kaynakça

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