Abstract: With the experimental research on selective grinding and floating offlakey graphitein Tanzania , compared to conventional beneficiation process and optimization process on the basis of the best roughing conditions and regrinding fineness of rough concentrate , the large scale of graphite was protected while improving the grade and recovery rate of graphite concentrate in the experimental conditions of optimization process .Finally, the fixed carbon content of the concentrate is 96.28%, and the recovery rate of concentrate is 90.69% and increased by 9.63% and 3.4%respectivelycompared with conventional beneficiation process .

Key words: graphite;scale protection;grade;recovery rate