Akademik Veri Yönetim Sistemi
Proceedings of Processing of Industrial Minerals'10 Istanbul, , İstanbul, Türkiye, 4 - 05 Şubat 2010, ss.1
Talc, which is an
extremely versatile industrial mineral, has found increasing number of uses in
various industries such as paint, paper, plastic, ceramic and cosmetic. As it
is well known, the particle shape is one of the main properties affecting the behavior
and properties of mineral particles, especially for the
bubble-particle attachment in flotation
In
this study, shape characteristics of talc particles produced by laboratory ball
and rod mills were determined by automated image analysis using Malvern
Morphology® G3S instrument. The results were compared by
previous studies on the same samples that used other shape characterization
techniques namely SEM (Scanning Electron Microscope) [Yekeler
et al., 2004; Hicyilmaz et al., 2004] and
Clemex
image analysis system [Ulusoy, 2008].
About 10058 particles for ball milled product and 7086 particles for rod milled
product were measured for the shape analysis by the Malvern Morphology® G3S
instrument. They were expressed in terms of Aspect ratio, HS Circularity and Elongation
and compared by applying t-test using the software SPSS (Statistical
Package for Social Science) with a 0.05 significance level. T-test revealed
that, the difference between the image data group for different mill products
are significant with a 95% confidence level.
Although
lower sample population was used for the SEM and Clemex
analysis techniques than for the new technique Malvern
Morphology® G3S, there is a clear difference in the particle
shape obtained by different grinding methods for the talc mineral used. The
determined shape property depends on the measurement technique applied. However,
the results are in good agreement with each other by this study. i.e., more elongated
talc particles were obtained by rod mill product.