关键词: 石墨;大鳞片;再磨;浮选

Abstract: Based on property analyses of large flake graphite ore in the eastern part of Mozambique , the roughing tests were carried out to determine the optimal conditions including grinding fineness , the test of the dosage of collector kerosene , as well as the test of the dosage of 2#oil.Under the optimal conditions of roughing experiments and regrinding fineness , the open-circuit tests and the closed-circuit test were conducted in order to increase the fixed carbon content and recovery of the concentrate .The results are obtained as following:the yield of the concentrate reach 15 .36％, the fixed carbon content is 96 .13％, and the recovery arrive at 97.54％.As for the particle size distribution, the graphite concentrate in -0. 850+0.300 mm occupied 31.43％, while those in -0.850+0.300 mm occupying 52.98％.

Key words: graphite;large flake;regrinding;flotation