Elbistan Linyitlerinin Ağır-Ortam Yöntemi ile Yıkanabilirlik İndekslerinin Belirlenmesi

Bu çalışmada, Kahramanmaraş-Elbistan linyitinin yıkanabilirlik özellikleri araştırılmıştır. Bu amaçla sahadan alınan linyit örneğinden -31,5+19 mm, -19+4,75 mm ve -4,75+0,5 mm olmak üzere 3 ayrı boyutta yüzdürme-batırma deneyleri gerçekleştirilmiştir. Daha sonra yıkanabilirlik sayısı (W), yıkanabilirlik indeksi/Govindarajan indeksi (WI/GWI) ve yakın yoğunlukta malzeme indeksi (NGMI) gibi farklı yıkanabilirlik indeksleri kullanılarak, Elbistan linyitinin karşılaştırmalı olarak yüzebilirlik özelliği ve gravite yöntemleri ile zenginleştirilmesinin kolay veya zor olacağı ortaya çıkarılmaya çalışılmıştır. Tüm bu hesaplamalardan Elbistan linyitinin yıkanabilirliğinin ve zenginleştirilmesinin çok zor olduğu, sadece belirli bir yoğunluk aralığında (1,55-1,65 g/cm3) kontrollü olarak yıkanması gerektiği sonucuna varılmıştır.

Anahtar Kelimeler:

Linyit, yüzdürme-batırma, yıkanabilirlik sayısı, yıkanabilirlik indeksi

Determination of Washability Indexes of Elbistan Lignites by Dense Medium Methods

In this study, the washability features Kahramanmaraş-Elbistan lignite was investigated. Experimental studies were carried out with the lignite samples taken from Kahramanmaraş-Elbistan in Turkey. Firstly, float-sink test were made on -31.5+19 mm, -19+4.75 mm and -4.75+0.5 mm particle size fractions. Then, assessment of the washability features was made by using washability number (W), index of washability (WI) and near gravity material index (NGMI). It has also been attempted to find out whether it is easy or difficult to enrichment Elbistan lignite with gravity methods by using washability index methods. From all these calculations, it is concluded that Elbistan lignite is very difficult to wash and gravity enrichment, only it to be washed under control at a certain density (1,55-1,65 g/cm3).

Keywords:

Lignite, sink-float, washability number, index of washability,

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