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出于环境的考虑,越来越多的选矿厂均利用回水以减轻废水对环境的冲击和对水资源的依赖.工业生产经验表明,回水使用量的增加会对浮选带来不利的影响,尤其是对复杂矿化矿的优先浮选.浮选选择性降低的主要原因是溶液中重金属离子对闪锌矿或黄铁矿的意外活化.本文应用微型浮选试验,吸附试验和表面测试研究了利用磷灰石来实现硫化矿浮选废水回用的可行性.试验表明,磷灰石可增强对闪锌矿的抑制而提高浮选的选择性.微型浮选和表面测试表明,磷灰石与闪锌矿竞争吸附溶液中的重金属,从而降低闪锌矿表面的重金属浓度.
For environmental reasons, more and more beneficiation plants use backwater to reduce the impact of wastewater on the environment and their dependence on water resources, and experience in industrial production shows that increased use of backwater can adversely affect flotation Especially for the complex mineralized ore.The flotation selectivity is mainly due to the unexpected activation of sphalerite or pyrite by heavy metal ions in solution.In this paper, the micro flotation test, adsorption test and surface The feasibility of using apatite to recycle flotation wastewater from sulphide ore was studied and tested.The results show that apatite can increase the inhibition of zinc blende and increase the selectivity of flotation.Micro flotation and surface tests show that, Apatite competes with sphalerite to adsorb heavy metals in solution, thereby reducing the concentration of heavy metals on the surface of sphalerite.