Abstract:
There are many mineral processing methods that are being used in
mining and mineral processing industries. One such method very widely used in the
graphite industry is froth flotation. During the present study, graphite having a 82- 85%
C, with a low market, has been up- graded to Carbon 99% + grade by using flotation. It
has been observed that the rod weight in the grinding operation has a major role to
play. If the rod weight is increased over and above the critical weight, over grinding
takes place. Further, it has been found that pH and the type of collector also play major
roles in the graphite processing. Laboratory trials indicate that by using the rod weight
of 625kg to 725kg in the rod mill and the particle size range of 75 to 150 microns,
maximum recovery of 85% could be achieved at 99% + C grade.
