| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2022-10-22 |
| タイトル |
|
|
タイトル |
Copper recovery and reduction of environmental loading from mine tailings by high‐pressure leaching and sx‐ew process |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
tailings valorization |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
high-pressure leaching |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
copper recovery |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
acid mine drainage |
| 主題 |
|
|
主題Scheme |
Other |
|
主題 |
metal elution |
| 資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 作成者 |
Godirilwe, Labone Lorraine
Haga, Kazutoshi
Batnasan, Altansukh
Takasaki, Yasushi
Ishiyama, Daizo
Trifunovic, Vanja
Avramovic, Ljiljana
Jonovic, Radojka
Stevanovic, Zoran
Shibayama, Atsushi
|
| 内容記述 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The flotation tailings obtained from Bor Copper Mine contain pyrite (FeS2) and chalcopyrite (CuFeS2), these sulfide minerals are known to promote acid mine drainage (AMD) which poses a serious threat to the environment and human health. This study focuses on the treatment of mine tailings to convert the AMD supporting minerals to more stable forms, while simultaneously valorizing the mine tailings. A combination of hydrometallurgical processes of high-pressure oxidative leaching (HPOL), solvent extraction (SX), and electrowinning (EW) were utilized to recover copper from mine tailings which contain about 0.3% Cu content. The HPOL process yielded a high copper leaching rate of 94.4% when water was used as a leaching medium. The copper leaching kinetics were promoted by the generation of sulfuric acid due to pyrite oxidation. It was also confirmed that a low iron concentration (1.4 g/L) and a high copper concentration (44.8 g/L) obtained in the stripped solution resulted in an improved copper electrodeposition current efficiency during copper electrowinning.
Moreover, pyrite, which is primarily in the mine tailings, was converted into hematite after HPOL. A stability evaluation of the solid residue confirmed almost no elution of metal ions, confirming the reduced environmental loading of mine tailings through re-processing. |
|
言語 |
en |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 書誌情報 |
en : Metals
巻 11,
号 9,
発行日 2021
|
| 収録物識別子 |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
20754701 |
| 出版者 |
|
|
出版者 |
MDPI AG |
| 関連情報 |
|
|
関連タイプ |
isIdenticalTo |
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.3390/met11091335 |
| 権利情報 |
|
|
権利情報 |
© 2021 by the authors.Licensee MDPI, Basel, Switzerland.This article is an open access article distributed under the terms and conditions of the Creative CommonsAttribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
kokuA_2022_2.pdf (23.2 MB)
