Fluid Dynamics Properties of Barium Hexaferrite Particle
Abstract: Particle size
distribution of Barium Hexaferrite sample has been performed with commonly used
methods of mathematical models by Rosin-Rammler (RR model) distribution. By
using sieving method from 20-400 mesh, the basis of network analysis
distribution function F(d) and density function, f(d) were obtained. Particle
size estimation was performed using sedimentation gravitation based on Stokes
law to obtained Reynolds numbers and terminal velocity of flocs in medium value has been calculated. The results
of Reynolds numbers shows that Barium hexaferrite flocs in ethanol medium in
laminar flow, whereas terminal velocity increases as larger particle size and
density, however, bulk density reduce due to contained highly porous in the
sample which yields lower bulk density. The relationship of turbidity with the
floc size has been evaluated. The results show that turbidity and bulk density
increases as smaller particle size, meanwhile, terminal velocity reduced.
Differences in turbidity for each sample (20-400 mesh) has been determined
which shows two region instead, with first region from 150-850 µm yields larger
differences compared to the second region: 37-105 µm.
Author: Perdamean Sebayang, Muljadi,
Anggito Tetuko, Priyo Sardjono
Journal Code: jpfisikagg130003
