Abstract:The effects and influences of tragacanth gum in the flotation separation of scheelite and calcite were studied by pure mineral flotation test, adsorption amount test and infrared spectrum test , and the mechanism was analyzed. The results show that the addition of tragacanth gum in the flotation system has no obvious depress effect on scheelite, but the calculus has a strong depress effect. When the pH is 7and the amount of tragacanth gum is 30 mg/L, the floatability of calcite and scheelite is greatly different, and the scheelite and calcite can be effectively separated. The adsorption amount test showed that the difference in inhibition effect was due to the fact that the surface adsorption of the Calcite of the tragacanth gum was superior to that of the scheelite.Infrared spectroscopy analysis showed that tragacanth gum did not cause chemisorption on the surface of scheelite, but it had strong adsorption on the surface of calcite, which mainly caused chemical adsorption.