矿山开采过程导致大量的酸性废水产生，而酸水又严重地影响着人类的生存环境。实验采用过氧化氢对黄铁矿氧化，并用柠檬酸进行表面有机覆膜，探讨了矿石有机覆膜技术在预防酸水形成中的可行性。结果表明，经柠檬酸覆膜后，矿石耐酸性腐蚀能力有了明显提高，从而减少了酸水的形成。与对照组相比，腐蚀3周，0．3mol/L柠檬酸组保护效率能达到68％；腐蚀4个月后，仍可观察到明显的抗腐蚀保护效果。可以认为，使用柠檬酸有机覆膜技术可以起到一定的抗酸化保护作用，这为矿山酸水污染防治提供了一种可借鉴保护方法。%A large mass of acid mineral drainage (AMD) with mining is thus released into environment where makes an serious effect on human being and other living things .In this experimental work ,the iron ore was laminated by citric acid chelating after hydrogen peroxide oxidation so as to explore whether citric acid laminating has an effectively prevent capability in AMD production .The results showed that in comparison to control ,the iron ore laminated by citric acid had increased a clear resistant to sour corrosion and thus decreased the formation of acid mineral drainage .The protective effectiveness in the 0 .3mol/L citric acid group was up to 68% in three weeks and a distinct resistant to acidic corrosion was still observed in these experimental cases after iron ore was eroded one quarter .Thus it was suggested that citric acid laminating technology could make ore an effective resistant to acidification and could be applied in treatment and prevention from acid mineral drainage .
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