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首页> 外文会议>2007采矿科学与安全技术国际学术会议 >Leaching Behavior of Acid Coal Mine Waste and Sulfur-Control Measures
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Leaching Behavior of Acid Coal Mine Waste and Sulfur-Control Measures

机译：酸性煤矿废渣的浸出行为及控制硫的措施

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摘要

Acid mine drainage (AMD) is the result of the natural oxidation of sulphide minerals (FeS2) in coal-mining wastes, when exposed to the combined action of water and oxygen. It is considered as the worst environmental problem associated with mining activities owing to low pH and high concentrations of heavy metals and other toxic elements. Experiment showed acid environment occurred with the oxidation of high-sulfur coal mining waste, which solubilized heavy metals present in the waste material, thus making them readily available to water, soil and biota. Traditional AMD treatment including alkaline material neutralization, engineered wetlands has well effect, but not be controlled from source. Some effective AMD prevention techniques were brought out, such as bactericides method, surface passivation treatment, and organic material cover treatment, aiming at eliminating oxygen diffusion and precipitate infiltration into the sulphides mass.
机译：酸性矿山排水（AMD）是煤矿废物中硫化物矿物质（FES2）的天然氧化的结果，当暴露于水和氧气的组合作用时。由于低于pH和高浓度的重金属和其他有毒元素，它被认为是与采矿活动相关的最严重的环境问题。实验显示酸环境随着高硫煤开采废物的氧化而发生，其中溶解在废料中存在的重金属，从而使水，土壤和生物征易用。传统的AMD治疗，包括碱性物质中和，工程湿地具有良好的效果，但不受来源控制。提供了一些有效的AMD预防技术，例如杀菌方法，表面钝化处理和有机材料覆盖处理，旨在消除氧气扩散并沉淀到硫化物质量中。

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