Speciation of Cr in waste rocks of Xinqiao pyrite mine in Tongling, China

DOI

10.2991/icseee-15.2016.11How to use a DOI?

Keywords

speciation, Cr, waste rock, acid mine drainage (AMD), Xinqiao pyrite mine

Abstract

Based on the investigation of the characteristics of the waste rocks of Xinqiao pyrite mine in Tongling, the possibility of AMD was discussed, and the speciation of Cr in the waste rocks was studied by the improved five steps sequential extraction method. The results reveal that the NP is less than the AP, the waste rocks have a high acid potential and produce AMD. The speciation of Cr in the waste rocks exist mainly in the silicate, secondly in deoxidize and oxidizable mode. But the Cr contents in the deoxidize mode are correlative to the total contents in waste rocks, if the waste rocks react with the AMD, the Cr in the deoxidize and oxidizable modes may easily release from the waste rocks. So the Cr has high environmental risk.

Copyright

© 2016, 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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TY  - CONF
AU  - Liwei Chen
AU  - Xiaochun Xu
AU  - Jun Wang
PY  - 2016/04
DA  - 2016/04
TI  - Speciation of Cr in waste rocks of Xinqiao pyrite mine in Tongling, China
BT  - Proceedings of the 2015 4th International Conference on Sustainable Energy and Environmental Engineering
PB  - Atlantis Press
SP  - 61
EP  - 64
SN  - 2352-5401
UR  - https://doi.org/10.2991/icseee-15.2016.11
DO  - 10.2991/icseee-15.2016.11
ID  - Chen2016/04
ER  -