Abstract: College of resource and Civil Engineering，Northeastern University，Shenyang 110819，China Fatty acid collector (LTS) reverse floating hematite has problems of need slurry heating，to decrease flotation temperature and improve hematite flotation index by medicament combination，nonionic surfactant CW-1 and CW-2，anionic surfactants CW-3 and CW-4 was respectively combined with LTS.Monomineral quartz flotation experiment results indicated that，at the temperature of 10 ℃，the slurry pH value is 12，using CW-3 and LTS(dosage is 40+40 mg/L)，CW-4 and LTS(90+30 mg/L) as collector，quartz recovery rate was 99.44% and 94.99%，respectively.Artificial mixed ore flotation experiment results indicated that，at 10 ℃，CW-3 and CW-4 respectively combined with LTS，hematite concentrate iron grade is higher than that of using LTS alone at 25 ℃.When CW-3 and LTS combination，hematite concentrate iron grade is increased by 5.41 percentage points；When CW-4 and LTS combination，hematite concentrate iron grade increased by 2.95 percentage points.Both of the two kind combination collector have intensity collecting ability in hematite reverse flotation at normal temperature.

Key words: Hematite, Normal temperature reverse flotation, Anionic surfactants, Quartz