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梅山铁精矿硫、磷含量高，影响着铁精矿及冶炼生铁的质量。采用硫、磷混浮工艺，可有效降低铁精矿中硫、磷含量。扩大连续试验结果表明：以重选铁精矿作为原矿，在磨矿粒度－０．０７６ｍｍ占６５％～７０％条件下，采用碳酸钠、水玻璃、淀粉、丁黄药、脂肪酸类捕收剂和硫酸铜作浮选药剂，铁精矿中硫、磷含量可分别降至０．２５％和０．１９％，精矿铁品位达到５４．５３％，铁回收率９１．１６％，铁精矿碱度０．８１。采用酸化水玻璃作抑制剂，对硫、磷混合泡沫进行再分离，可得到硫品位大于３２％、回收率大于７２％的硫精矿。
Meishan iron concentrate sulfur, phosphorus content is high, affecting the quality of iron concentrates and smelting pig iron. The use of sulfur, phosphorus mixed floating process, can effectively reduce the sulfur and phosphorus content of iron ore concentrate. Extending the continuous test results show that: the re-election of iron ore as raw ore grinding particle size -0.076mm accounted for 65% to 70% conditions, the use of sodium carbonate, water glass, starch, butyl humectants, fatty acids collector And copper sulfate as flotation reagent, the content of sulfur and phosphorus in iron concentrate can be reduced to 0.25% and 0.19% respectively, the concentrate grade achieves 54.53%, the iron recovery rate is 91.16% Minerals basicity 0.81. The use of acidified water glass as inhibitor, sulfur and phosphorus foam re-separation, available sulfur grade greater than 32%, the recovery rate greater than 72% of the sulfur concentrate.