Abstract: Octaphenyl polyoxyethyiene(OP-10), polyoxyethylene sorbitan monolaurate(Tween 20), sodium alcohol ether sulphate(AES), carboxymethylcellulose sodium(CMC), polyethylene glycol(PEG) 6000 and their mixtures were used to disperse graphite in water and their dispersion performance was investigated by spectrophotometry and Zeta potential measurements.Results indicate that three dispersant mixtures, (a) SGDF1 containing 100 g/L AES, 30 g/L Tween 20 and 20 g/L OP-10, (b) SGDF2 containing 100 g/L AES, 10 g/L Tween 20 and 20 g/L PEG-6000, and(c) SGDF3 containing 100 g/L AES, 10 g/L Tween 20 and 20 g/L CMC, have a good dispersibility for graphite in water.When the pH value is higher than 7, the dispersant mixtures have improved dispersibility.When the pH value is over 9, the Zeta potential of the graphite suspensions are high and their stability is the best.SGDF3 has the best dispersibility among all dispersants investigated.