首页> 外文会议>International Mine Water Association Annual Meeting >Evaluation of Acid Rock Drainage Potential in a Retrospective Study 25 Years after Mine Closure: Acid Base Accounting Statistics are Not Sufficient
【24h】

Evaluation of Acid Rock Drainage Potential in a Retrospective Study 25 Years after Mine Closure: Acid Base Accounting Statistics are Not Sufficient

机译:回顾性研究中的酸性岩排水潜力评价25年后矿井关闭:酸基础会计统计数据不足

获取原文

摘要

Waste rock at a former iron mine with 70 million tonnes of rock distributed in 15 discrete deposits was evaluated for acid generating characteristics. Two of the 15 deposits exhibited acidic drainage while all others remained neutral 25 to 40 years after deposition. The carbonate neutralization potential (Carb-NP) exceeded the acid potential (AP) in all deposits and only 10% of the samples represented potentially acid generating (PAG) material. The acid drainage from the 2 deposits could not be readily explained by average ABA characteristics. Differences in spatial distributions of sulphide and carbonate minerals in piles can explain differences in neutral and acidic conditions.
机译:在150万吨分布在15个离散沉积物中的前铁矿的废岩被评估为酸产生特性。 15个沉积物中的两个表现出酸性排水,而沉积后,所有其他人仍然是中性的25至40年。碳酸盐中和电位(CARB-NP)超过所有沉积物中的酸电位(AP),只有10%的样品代表潜在的酸产生(PAG)材料。通过平均ABA特性,不能容易地解释来自2沉积物的酸引流。桩中硫化物和碳酸盐矿物的空间分布的差异可以解释中性和酸性条件的差异。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号