CD Skripsi
Pengaruh Kecepatan Putaran Tabung Ball Milling Terhadap Komposisi Morfologi Dan Suseptibilitas Dari Partikel Oksida Besi Pasir Alam Sungai Rokan
The speed of ball milling vial affects the magnetic properties of its product.
Research on the composition, morphology and magnetic properties of natural sand
particles from Rokan River as a function of the vial speed . The sample of natural
sand is available in magnetic labolatory with a mass of 10 Kg and then dried
under the sun ray before the separation process between magnetic and nonmagnetic
particles using an Iron Sand Separator (ISS). The result of the separation
with the Iron Sand Separator is called the ISS product. The ISS products were
milled as a function the vial speed namely 100rpm, 150rpm and 200rpm. The
number of milling balls used was 16 and are made of ceramic balls with diameter
of 1.5 cm. The products of ball milling was then separated using Neodymium Iron
Boron (NdFeB). The results of this study indicate the magnetic induction values
of the samples ranged from 7,032-7,499 mT for the same current of 400 mA,
while the magnetic susceptibility values obtained is around 34738,455 -
43686,529 × 10-5 . the elemental composition the ball milling products was carried
out using X-Ray Fluorescence (XRF) The results showed that the Fe composition
increased from 13.892% to 32.561% while the Si composition decreased from
56.53% to 38.556%. The morphological properties of the ball milling products
was carried out using Scanning Electron Microscope (SEM). The results showed
that the particle size decreased from 1.583m to 0.5028 m. The results showed
that the optimum speed for the vial is at a speed of 200 rpm.
Keywords: Natural sand, Iron Sand Separator, Ball Milling , X-Ray
Fluorescence (XRF), Scanning Electron Microscope (SEM)
Tidak tersedia versi lain