Proceedings of the 2015 International Forum on Energy, Environment Science and Materials

Evaluation and Research on Static and Dynamic Acid Generation of Waste Rock at Dexing Copper Mine in Different Years

Authors
Qiong Wang, Yi Liu, Yuli Han, Lianbi Zhou
Corresponding Author
Qiong Wang
Available Online September 2015.
DOI
10.2991/ifeesm-15.2015.171How to use a DOI?
Keywords
acid mine drainage; waste rock; Static evaluation; Dynamic evaluation
Abstract

Waste rock and tailings of a mine generate acid mine drainage due to oxidization during long-term stacking, and this may cause serious harm to the environment. 1-year-old, 5-year-old, 10-year-old and 20-year-old waste rock of Dexing Copper Mine are chosen in the experiment for acid generation research. The static evaluation result shows that the 4 types of waste rock have the acid generating potential, and 3 types (except for 1-year-old waste rock) have generated acid. The 9-month dynamic evaluation result indicates: the pH values of waste rock of 4 different ages show remarkable negative correlation, the detected ions are mainly of fluorides, Cu2+, Zn2+, SO42- and Fe3+. 1-year-old waste rock doesn't generate acid during the entire experiment, the acid generation of 5-year-old and 10-year-old waste rock is stable, but that of 20-year-old waste rock is slow. Thus the acid generation process of waste rock can be inferred as: no acid generation - high-rate acid generation - stable acid generation - lower-rate acid generation.

Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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Volume Title
Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
Series
Advances in Engineering Research
Publication Date
September 2015
ISBN
978-94-6252-117-9
ISSN
2352-5401
DOI
10.2991/ifeesm-15.2015.171How to use a DOI?
Copyright
© 2015, the Authors. Published by Atlantis Press.
Open Access
This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Cite this article

TY  - CONF
AU  - Qiong Wang
AU  - Yi Liu
AU  - Yuli Han
AU  - Lianbi Zhou
PY  - 2015/09
DA  - 2015/09
TI  - Evaluation and Research on Static and Dynamic Acid Generation of Waste Rock at Dexing Copper Mine in Different Years
BT  - Proceedings of the 2015 International Forum on Energy, Environment Science and Materials
PB  - Atlantis Press
SP  - 931
EP  - 938
SN  - 2352-5401
UR  - https://doi.org/10.2991/ifeesm-15.2015.171
DO  - 10.2991/ifeesm-15.2015.171
ID  - Wang2015/09
ER  -