首页> 外文会议>International Conference on Groundwater Research, Jun 6-8, 2000, Copenhagen, Denmark >Characterisation of oxidation of sulphide minerals by means of laboratory experiments and modelling studies
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Characterisation of oxidation of sulphide minerals by means of laboratory experiments and modelling studies

机译:通过实验室实验和模型研究表征硫化物矿物的氧化

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Laboratory experiments and modelling studies were carried out to characterise the oxidation of pyrite and other sulphides that are present at the soil after the accident at the mine tailing impoundment from Aznalcollar (SE Spain). Results show that, in the absence of calcite, pH drops enhancing the dissolution of silicate. Moreover, high metal and sulphate concentrations causes the formation of an iron sulphate hydroxide and, temporally, Al(OH)_(3(am)) and Fe(OH)_(3(am)). A sequence of dry and wet periods causes the mobilisation of sulphate, iron and heavy metals.
机译:进行了实验室实验和模型研究,以鉴定事故发生后阿兹纳尔科拉尔(西班牙)的矿山尾矿库中土壤中存在的黄铁矿和其他硫化物的氧化。结果表明,在没有方解石的情况下,pH下降会增强硅酸盐的溶解。此外,较高的金属和硫酸盐浓度会导致形成硫酸铁氢氧化物,并暂时形成Al(OH)_(3(am))和Fe(OH)_(3(am))。一连串的干燥和湿润时期引起了硫酸盐,铁和重金属的迁移。

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