Galvanic Interaction between Chalcopyrite and Pyrite with Low Alloy and High Carbon Chromium Steel Ball
This study was aimed to investigate the galvanic interaction between pyrite and chalcopyrite with two types of grinding media (low alloy and high carbon chromium steel ball) in grinding of a porphyry copper sulphide ore. Results indicated that injection of different gases into mill altered the oxida...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2013/817218 |
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| author | Asghar Azizi Seid Ziaoddin Shafaei Mohammad Noaparast Mohammad Karamoozian |
| author_facet | Asghar Azizi Seid Ziaoddin Shafaei Mohammad Noaparast Mohammad Karamoozian |
| author_sort | Asghar Azizi |
| collection | DOAJ |
| description | This study was aimed to investigate the galvanic interaction between pyrite and chalcopyrite with two types of grinding media (low alloy and high carbon chromium steel ball) in grinding of a porphyry copper sulphide ore. Results indicated that injection of different gases into mill altered the oxidation-reduction environment during grinding. High carbon chromium steel ball under nitrogen gas has the lowest galvanic current, and low alloy steel ball under oxygen gas had the highest galvanic current. Also, results showed that the media is anodic relative to pyrite and chalcopyrite, and therefore pyrite or chalcopyrite with a higher rest potential acted as the cathode, whilst the grinding media with a lower rest potential acted as the anode, when they are electrochemically contacted. It was also found that low alloy steel under oxygen produced the highest amount of EDTA extractable iron in the slurry, whilst high carbon chromium steel under nitrogen atmosphere led to the lowest amount. |
| format | Article |
| id | doaj-art-14ad496279ed486cb2a5c8cd58577624 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-14ad496279ed486cb2a5c8cd585776242025-02-03T01:11:06ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/817218817218Galvanic Interaction between Chalcopyrite and Pyrite with Low Alloy and High Carbon Chromium Steel BallAsghar Azizi0Seid Ziaoddin Shafaei1Mohammad Noaparast2Mohammad Karamoozian3Department of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, IranSchool of Mining Engineering, College of Engineering, University of Tehran, IranSchool of Mining Engineering, College of Engineering, University of Tehran, IranDepartment of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, IranThis study was aimed to investigate the galvanic interaction between pyrite and chalcopyrite with two types of grinding media (low alloy and high carbon chromium steel ball) in grinding of a porphyry copper sulphide ore. Results indicated that injection of different gases into mill altered the oxidation-reduction environment during grinding. High carbon chromium steel ball under nitrogen gas has the lowest galvanic current, and low alloy steel ball under oxygen gas had the highest galvanic current. Also, results showed that the media is anodic relative to pyrite and chalcopyrite, and therefore pyrite or chalcopyrite with a higher rest potential acted as the cathode, whilst the grinding media with a lower rest potential acted as the anode, when they are electrochemically contacted. It was also found that low alloy steel under oxygen produced the highest amount of EDTA extractable iron in the slurry, whilst high carbon chromium steel under nitrogen atmosphere led to the lowest amount.http://dx.doi.org/10.1155/2013/817218 |
| spellingShingle | Asghar Azizi Seid Ziaoddin Shafaei Mohammad Noaparast Mohammad Karamoozian Galvanic Interaction between Chalcopyrite and Pyrite with Low Alloy and High Carbon Chromium Steel Ball Journal of Chemistry |
| title | Galvanic Interaction between Chalcopyrite and Pyrite with Low Alloy and High Carbon Chromium Steel Ball |
| title_full | Galvanic Interaction between Chalcopyrite and Pyrite with Low Alloy and High Carbon Chromium Steel Ball |
| title_fullStr | Galvanic Interaction between Chalcopyrite and Pyrite with Low Alloy and High Carbon Chromium Steel Ball |
| title_full_unstemmed | Galvanic Interaction between Chalcopyrite and Pyrite with Low Alloy and High Carbon Chromium Steel Ball |
| title_short | Galvanic Interaction between Chalcopyrite and Pyrite with Low Alloy and High Carbon Chromium Steel Ball |
| title_sort | galvanic interaction between chalcopyrite and pyrite with low alloy and high carbon chromium steel ball |
| url | http://dx.doi.org/10.1155/2013/817218 |
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