Evaluation of Critical Parameters for Wettability-Based Processes in Mineral Processing

Yıl 2015, Cilt: 30 Sayı: 1, 57 - 64, 25.07.2016

Alper Özkan Selma Düzyol

https://doi.org/10.21605/cukurovaummfd.242812

Öz

Bu çalışmada, cevher hazırlamada ıslanabilirliğe dayanan işlemlerden olan flotasyon, makaslama flokülasyonu, yağ aglomerasyonu ve sıvı–sıvı ekstraksiyonu için kritik parametreler değerlendirilmiştir. Bu işlemlerde ‘kritik ıslanma yüzey gerilimi (c)’ değeri oldukça önemlidir. Ayrıca, mineralin cdeğerinden biraz yüksek olan ‘yağ aglomerasyonu için kritik çözelti yüzey gerilimi (c-a)’ ve ‘sıvısıvı ekstraksiyonu için kritik çözelti yüzey gerilimi (c-e)’ değerleri yağ aglomerasyonu ve sıvısıvı ekstraksiyonu tekniklerinin başarılı olabilmesini sağlayan parametrelerdir. Katı, sıvı/ortam ve yağdan oluşan üçlü faz sistemlerinin bulunduğu yağ aglomerasyonu ve sıvısıvı ekstraksiyonu yöntemlerinde, yağsıvı ara yüzey gerilimine (γOL) dayanan ikincil kritik parametreler ise sırasıyla ‘yağ aglomerasyonu için kritik yağsıvı ara yüzey gerilimi, γcOLa’ ve ‘sıvısıvı ekstraksiyonu için kritik yağsıvı ara yüzey gerilimi, γcOLe’dir

Anahtar Kelimeler

Islanabilirlik, Flotasyon, Makaslama flokülasyonu, Yağ aglomerasyonu, Sıvı-Sıvı ekstraksiyonu

Cevher Hazırlamada Islanabilirliğe Dayanan İşlemler için Kritik Parametrelerin Değerlendirilmesi

Öz

This paper presents an evaluation of critical parameters for wettability-based processes such as flotation, shear flocculation, oil agglomeration and liquid–liquid extraction in mineral processing. ‘The critical surface tension of wetting (c)’ value of minerals has crucial importance in these processes. Also, ‘the critical solution surface tension for oil agglomeration (c-a)’ and ‘the critical solution surface tension for liquidliquid extraction (c-e)’ parameters, which are slightly higher than the c value of the mineral, exist for achieving the oil agglomeration and liquidliquid extraction techniques. In the case of three-phase systems composed of solid, liquid/medium and oil such as oil agglomeration and liquidliquid extraction techniques, there is a second critical parameter based on the oilliquid interfacial tension (γOL) which are ‘the critical oilliquid interfacial tension for oil agglomeration, γcOLa’ and ‘the critical oilliquid interfacial tension for liquidliquid extraction, γcOLe’, respectively

Anahtar Kelimeler

Wettability, Flotation, Shear flocculation, Oil agglomeration, Liquid–Liquid extraction

Kaynakça

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