Geochemistry of waste rock at dumping area

被引：11

作者：

Nugraha, Candra ^{[1
,2
]}

Shimada, Hideki ^{[1
]}

Sasaoka, Takashi ^{[1
]}

Ichinose, Masatomo ^{[1
]}

matsui, Kikuo ^{[1
]}

Manege, Imanuel ^{[2
]}

机构：

[1] Kyushu Univ, Earth Resources Engn Dept, Fukuoka 812, Japan

[2] PT Kaltim Prima Coal, Dept Environm, Sengata, Indonesia

来源：

INTERNATIONAL JOURNAL OF MINING RECLAMATION AND ENVIRONMENT | 2009年 / 23卷 / 02期

关键词：

acid mine drainage; sulphide-bearing rock; oxidation; clay mineral;

D O I：

10.1080/17480930802439845

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Geochemical characteristics and the increase in the total reactive surface area of the sulphide-bearing rock due to weathering processes at dumping area, are expected to enhance the oxidation of sulphides, leading to the generation of acid mine drainage (AMD). The study of the changes of geochemical characteristics of sulphide-bearing rocks showed that the oxidation uniformly occurred at the surface layer of 2- and 10-year-old waste rock dumps. The changes of mineralogical composition were also investigated, particularly for the cases where significant formation of clay minerals occurred. The study showed that the formation of clay minerals after the weathering processes took place at the dumping area, suggested that the generation of AMD would be minimised because the interior of the waste rock dump provided a barrier to oxygen and water.

引用

页码：132 / 143

页数：12

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