Elemental and Crystal Structure Properties on Milled Nanosize Colemanite Mineral

Öz

Colemanite minerals in three different sizes (C-3 mm, C-75 µm and C-45 µm) were supplied from the Eti Mine Company. These minerals were used as initial materials. It is well known that nanosize materials have a lot of positive technical properties. Therefore, in this study, C-3 mm mineral was ground by a high-energy ball mill in order to obtain nanocrystallite sized colemanite. Afterwards, milled powder was passed through a sieve of 25 µm of a vibratory sieve shaker (C-25 µm). Elemental properties of initial materials and milled powder were investigated with an oxide compound test and an energy dispersive spectrometer (EDS). Their crystal structure properties were examined with an X-ray diffractometer (XRD). Results of elemental property indicate that the materials were not pure colemanite compound and the amount of boron oxide did not change significantly at the end of milling process. Results of crystal structure property show that crystallite size of the colemanite mineral at the end of milling process was reduced to nanoscale with a value of 63.6 nm. The findings obtained from this study will be useful for future science and engineering studies with not only colemanite mineral but also other boron minerals.

Anahtar Kelimeler

• Colemanite,Ball milling,EDS,XRD,Nanosize

Öğütülmüş Nano Boyutlu Kolemanit Mineralinin Elementel ve Kristal Yapı Özellikleri

Öz

Üç farklı boyutta olan (C-3 mm, C-75 µm ve C-45 µm) kolemanit mineralleri, Eti Maden Şirketinden tedarik edildi. Bu mineraller başlangıç malzemesi olarak kullanıldı. Nano boyutlu malzemelerin pek çok pozitif teknik özelliklere sahip olduğu bilinmektedir. Bu yüzden bu çalışmada nano kristal boyutlu kolemanit elde edebilmek için, C-3 mm minerali yüksek enerjili bilyalı değirmende öğütüldü. Sonra öğütülmüş toz 25 µm’lik eleğe sahip elek sarsma cihazından geçirildi (C-25 µm). Başlangıç malzemelerinin ve öğütülmüş tozun elementel özellikleri oksitli bileşik deneyi ve enerji dağılımlı spektrometre (EDS) ile araştırıldı. Onların kristal yapı özellikleri X-ışını difraktometresi (XRD) vasıtasıyla incelendi. Elementel özellik sonuçları, malzemelerin saf kolemanit bileşiği olmadığını ve öğütme işlemi neticesinde bor oksit miktarının önemli ölçüde değişmediğini gösterdi. Kristal yapı özellik sonuçları, öğütme işlemi neticesinde kolemanit minerali kristal boyutunun 63.6 nm değeri ile nano ölçeğe indirgendiğini gösterdi. Bu çalışmanın sonuçları, bilim ve mühendislik çalışmaları açısından sadece kolemanit minerali için değil diğer bor mineralleri için de gelecek vadetmektedir.

Anahtar Kelimeler

• Kolemanit,Bilyalı öğütme,EDS,XRD,Nano boyut

Kaynakça

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