Leptite is the main ore type of graphite in Vietnam, followed by graphite schist, the middle crystalline flake is the main graphite beneficial mineral.For qualified quality of concentrate,technical staff of Xinhai make a comprehensively analysis of the raw ore property, deciding to add a scavenging and a concentration on the basis of prior beneficiation process.that is totally nine times grinding, one roughing separation, one scavenging and nine concentrating.
that it was a heavily weathered large ﬂake graphite ore and the main gangue minerals were quartz and kaolinite. The graphite ﬂakes were thick, bent, and fractured, and some clay minerals were embedded into the graphite interlayer, which made it difﬁcult to prevent the large ﬂakes from being destroyed using mechanical grinding methods.
Graphite Beneficiation Process. Graphite is an important industrial mineral. Two types occur in nature, crystalline and amorphus. Crystalline graphite is used principally for crucibles and shaped structures. Amorphus graphite is used extensively in the steel and lubrication industries. In many deposits the two types grade into each other and the ore is of such low grade that beneficiation such as by flotation must be used.
A low grade graphite run of mine ore from eastern India was studied for its amenability to beneficiation by flotation technique. The petrography studies indicate that the ore primarily consists of quartz and graphite with minor quantity of mica. It analyzed 89.89% ash and 8.59% fixed carbon. The ore was crushed in stages followed by