Elemental and Crystal Structure Properties on Milled Nanosize Colemanite Mineral

Yıl 2017, Cilt: 10 Sayı: 2, 303 - 313, 22.12.2017

Sezai Kütük

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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