Abstract: Aiming at the problem of selectivity deterioration with spodumene in Australia due to weathering， flotation tests were carried out on the basis of the process mineralogy. The results showed that when the grinding fineness is -74 μm of 74%， and the dosing and flotation temperature are both about 25 ℃， easy-floating minerals were floated using one-time flotation process（The dosage of sodium carbonate is 1 500 g/t and the dosage of naphthenic acid soap is 20 g/t）. Two roughing-two cleaning flotation process was adopted for lithium minerals（The dosage of sodium hydroxide， calcium chloride， -YS07 and diesel oil are 900 g/t， 170 g/t， 756 g/t， and 100 g/t， respectively， in roughing one. The dosage of sodium hydroxide， calcium chloride and -YS07 are 100 g/t， 30 g/t， 50 g/t， respectively， in roughing two.）. Finally， lithium concentrate with Li2O grade of 5.58% and recovery rate of 82.11% was obtained.

Key words: Spodumene ore, Easy-floating minerals, Flotation