Abstract: In order to promote the development and utilization of fine flake graphite ore, this paper studies the effects of stirred mill, ball mill and rod mill on the flotation, flake protection and dissociation behavior of fine flake graphite. The results of the flotation kinetics test show that under the condition of a fineness of −0.074 mm accounting for 82.5%, the flotation rate of the stirred mill product, the recovery rate of the flotation concentrate, and the fixed carbon content of the concentrate are significantly higher than those of the ball mill product and the rod mill product. The flotation concentrate recovery of stirred mill products is significantly higher than that of ball mill products and rod mill products when obtaining concentrate products with the same fixed carbon content, which is conducive to the efficient recovery of fine flake graphite. The grinding experiment results under different fineness conditions show that the fixed carbon content and recovery of the flotation concentrate of the stirred mill products are also higher than those of the flotation concentrates of the traditional rod mill products and ball mill products. The screening experiment results show that when the fineness （−0.074 mm） is less than 82.5%, the yield of +0.15 mm large flake graphite in the flotation concentrate of the stirred mill products is higher than that of the traditional rod mill products and ball mill products. On the contrary, the damage caused by the stirred mill to the large flake graphite is more severe than that of the ball mill and rod mill when the fineness （−0.074 mm） is greater than 82.5%. The SEM observation results of flotation concentrates of different grinding products show that the impact effect of the stirred mill is weaker than that of the ball mill and the rod mill, and it is easy to break the adhesion between ganglia and graphite flakes, promoting the efficient dissociation of fine flake graphite. Stirred grinding is a grinding method that is very suitable for fine flake graphite.