The effect of milling time, stirring speed and ball mill to powder ratio of malaysian tin ore
Loading...
Date
2018-06
Authors
Nur Izaani Akma Kamaruddin
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
In this study, “The Effect of Milling Time, Stirring Speed and Ball Mill to Powder Ratio
of Malaysian Tin Ore” has been carried out to characterize raw material and milled product of
the tin ore sing XRD, XRF and SEM-EDX. Prior to experimental work, raw material and milled
product was characterized using XRD, XRF and SEM-EDX. The experimental work is
designed based on 2
3 + 3 factorial design with three central point. The three variables in the
milling process were milling time (𝑋1), stirring speed (𝑋2), and ball mill to powder ratio. The
investigation of main significant effect and interaction effect between variables were analysed
using ANOVA Minitab 18. The effect of milling variable on elemental composition was
estimated by XRF. Based on the statistical model generate from the ANOVA, it was found that
milling time (𝑋1) has the most significant effect on the elemental composition followed by the
stirring speed (𝑋2).The XRF result showed the presence of different aggregates of minerals
and chemical composition that are Si, Al, Si, Fe, As, Mn, Mg, Na, Ti, P, Cu and Zn. XRD
phase pattern showed that the other minerals such as cassiterite, hematite, magnetite, pyrite,
arsenopyrite, rutile, stibnite and zircon are present in the XRD analysis. SEM-EDX showed the
elemental composition present such as iron, calcium, sodium, aluminium, arsenic and silica,
while SEM showed the morphological surface.