为分析某斑岩型铜钼矿尾矿回水对混合浮选的影响，以回水组分为研究对象进行了矿石中铜钼硫矿物可浮性的研究。结果表明：回水导致浮选精矿产率增大，铜、钼可浮性降低，硫被强烈抑制；回水中高浓度钙离子和APAM的联合作用，能有效地抑制矿石中的黄铁矿；浮选药剂以及 APAM 的累积，使浮选矿浆粘度增加，微细粒金属矿物夹杂在絮团之中而未能上浮。%In order to analyze the influence of backwater on bulk flotation of a porphyry copper‐molybdenum ore ,flotation tests were carried out to study the floatability of metallic minerals in the water containing different constituents .The results showed that the concentrate yield increase dramatically ,and the floatability of copper and molybdenum decline significantly under the condition of backwater flotation , however ,the pyrite is strongly inhibited that the high concentrations of calcium and APAM in backwater are the main causes .The slurry viscosity tends to rise with the cumulation of flotation reagents and APAM in backwater ,which lead to the loss of fine‐grained minerals wrapped in floccules .
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