Type of graphite:
The mineral graphite is an allotrope of carbon. Graphite
is an electrical conductor, a semimetal. Its formula is C and the occurs as Iron black to steel gray
color or some time is deep blue in transmitted light. Granite is very soft and its mosh hardness is just
1-2 with the density is 2.09-2.23 t/m3
There are three principal types of natural graphite, each
occurring in different types of ore deposit:
Crystalline flake graphite (or flake graphite for short) occurs
as isolated, flat, plate-like particles with hexagonal edges if unbroken and when broken the edges can
be irregular or angular;
Aphanitic graphite occurs as fine particles is sometimes called
meta-anthracite. Very fine flake graphite is sometimes called amorphous in the trade;
Lump
graphite (also called vein graphite) occurs in fissure veins or fractures and appears as massive platy
intergrowths of fibrous or acicular crystalline aggregates, and is probably hydrothermal in origin.
The Solution for processing graphite ore:
Generally speaking, flotation is
the most popular way for graphite ore beneficiation, especially for flake graphite. Usually in order to
protect the big flake in graphite by repeated regrinding and floating (up to seven times) to purify the
concentrate.
For Vein Graphite, it also takes the flotation method. Because there is no need to worrying about the big
flake, so there is no need to multistage grinding and flotation. There are always some amorphous
graphite(15%~25%) combined with vein graphite, so the floating time should be longer. This is also the
reason why vein graphite should be grinded to very fine size.
For amorphous graphite, as the grade
of amorphous graphite is usually very high, so after hand selecting the mineral gangue, the amorphous
graphite grade can be high enough as final product. Sometimes flotation method is also used for this
kind graphite beneficiation. But the recovery rate is quite low and the tailing is still useful for
Low-quality casting graphite.
Common equipment
PEW Jaw Crusher, HP Cone Crusher, HST Cone Crusher, S series cone crusher,
vibrating screen
Ball mill
Hydro cyclone, spiral classifier
SF Series Flotation Cells
BF Series
Flotation Cells
XCF-KYF Series Flotation Cells
