Column test investigation on the performance of monolayer covers made of desulphurized tailings to prevent acid mine drainage

被引：60
|
作者：
Demers, Isabelle [1 ]
Bussiere, Bruno [1 ]
Benzaazoua, Mostafa [1 ]
Mbonimpa, Mamert [1 ]
Blier, Annie [2 ]
机构：
[1] Univ Quebec Abitibi Temiscamingue, Rouyn Noranda, PQ J9X 5E4, Canada
[2] Gest IAMGOLD Quebec Inc, Rouyn Noranda, PQ J9X 5C8, Canada
来源：
MINERALS ENGINEERING | 2008年 / 21卷 / 04期
基金：
加拿大自然科学与工程研究理事会;
关键词：
environmental; tailings; reclamation; AMD;
D O I：
10.1016/j.mineng.2007.11.006
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Doyon mine (Quebec) explores the possibility of reprocessing concentrator tailings by environmental desulphurization, and using the desulphurized tailings as cover material for the existent tailings ponds to prevent acid mine drainage (AMD) generation. A laboratory study using instrumented columns was undertaken to evaluate the effectiveness of monolayer covers made of desulphurized tailings. The desulphurized tailings were placed in columns to evaluate the influence of residual sulphur content of the cover material, water table level, and thickness of the cover layer on water quality after repeated leaching. Configurations involving covers made of desulphurized tailings and water table located in the acid-generating tailings were able to control the production of AMD and to reduce the release of zinc and copper in the leachates by more than 87% and 98%, respectively. The covers also reduced the oxygen flux available under steady state conditions for reactive tailings oxidation by up to 96%. (c) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：317 / 329
页数：13
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