In this paper, the inhibition ability of tetrasodium pyrophosphate (TSPP), sodium tripolyphosphate (STPP) and sodium hexametaphosphate (SHMP) to scheelite, fluorite and calcite was predicted by performance calculation and further verified by micro-flotation test. The results of hydrophile lipophilic balance (HLB) calculation, group electronegative calculation and micro-flotation test indicated that the inhibition ability of phosphate to the three minerals increases with the increase of the number of phosphate groups and the order of inhibition ability of the three inorganic phosphates was SHMP > STPP > TSPP. STPP had great potential for flotation separation of scheelite from fluorite and calcite. The order of inhibition ability of STPP against the three calcium-bearing minerals is calcite>fluorite>scheelite. The results of contact angle measurement, adsorption amount measurement, X-ray photoelectron spectroscopy (XPS) analysis and atomic force microscope (AFM) imaging presented that the adsorption of STPP on the fluorite and calcite surface was much larger than that on the scheelite surface. The weak adsorption of STPP on the scheelite hardly influenced the collection of sodium oleate (NaOL). STPP could complex with Ca²⁺ on the surface of fluorite and calcite, and hinder the subsequent adsorption of NaOL. The results can provide guiding significance for the flotation of scheelite and the screening of inhibitors for calcium-bearing gangue minerals.

本文通过性能计算预测了焦磷酸四钠（TSPP）、三聚磷酸钠（STPP）和六偏磷酸钠（SHMP）对白钨矿、萤石和方解石的抑制能力，并通过微浮选试验进一步验证。亲水亲油平衡（HLB）计算、基团负电性计算和微浮选试验结果表明，磷酸盐对三种矿物的抑制能力随着磷酸盐基团数量的增加以及三种无机物的抑制能力顺序而增强。磷酸盐的大小依次为：SHMP > STPP > TSPP。 STPP 在从萤石和方解石中浮选分离白钨矿方面具有巨大的潜力。 STPP对三种含钙矿物的抑制能力大小顺序为：方解石>萤石>白钨矿。接触角测量、吸附量测量、X射线光电子能谱（XPS）分析和原子力显微镜（AFM）成像结果表明，STPP在萤石和方解石表面的吸附量远大于在白钨矿表面的吸附量。 STPP在白钨矿上的弱吸附几乎不影响油酸钠（NaOL）的收集。 STPP可以与萤石和方解石表面的Ca ²⁺络合，阻碍NaOL的后续吸附。研究结果对白钨矿的浮选及含钙脉石矿物抑制剂的筛选具有指导意义。