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.

Through the mineral processing test before beneficiation, technical staff of Xinhai make the conclusion that the graphite has great washability, so that the commonly used flotation process of single flotation and multi-stage grinding with multi-stage concentrating is feasible in technology, this process also characterised by simple reagents system, advanced and reliable beneficiation index.The program finally receives 14.2% productively,and its fixed carbon content is 92.30%,the recovery rate reaches 87.91%, which creates huge economical and society profits, and receives high praise from the partners.