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Effect of Galvanic Interactions between Grinding Media and Sulfide Minerals on Flotation Kinetics of Chalcopyrite | ||
| نشریه مهندسی منابع معدنی | ||
| مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 12 بهمن 1400 | ||
| نوع مقاله: علمی-پژوهشی انگلیسی | ||
| شناسه دیجیتال (DOI): 10.30479/jmre.2022.16004.1535 | ||
| نویسندگان | ||
| المیرا روان آسا1؛ غلامرضا کریمی* 2؛ رحمان احمدی3 | ||
| 1دانش آموخته دانشگاه امام خمینی (ره) | ||
| 2عضو هیات علمی دانشگاه بین المللی امام خمینی (ره) | ||
| 3عضو هیات علمی دانشگاه بین المللی امام خمینی( ره) | ||
| تاریخ دریافت: 13 مرداد 1400، تاریخ بازنگری: 12 بهمن 1400، تاریخ پذیرش: 23 دی 1400 | ||
| چکیده | ||
| Abstract: Although the flotation separation of sulfides and their electrochemical interactions have been examined in some investigations, study the direct relationship between the flotation kinetics of sulfides and their galvanic interactions during the process yet have not been addressed. To fill this gap, an extensive study was conducted to explored the effect of galvanic interactions for chalcopyrite and pyrite on their flotation kinetics when they wet ground by three different grinding media types (steel, chromium, and ceramic). Assessment of the flotation test results indicated that there was no galvanic interaction between the ceramic grinding balls and chalcopyrite. The galvanic interactions were mostly related to the grinding of chalcopyrite by steel balls. EDTA analyses showed by increasing the amount of iron oxy/hydroxy and their precipitations on the surface of chalcopyrite, the recovery of chalcopyrite was decreased. Furthermore, increasing the pyrite content in the flotation of chalcopyrite increased the flotation rate constant and then decreased it. Flotation tests demonstrated that grinding chalcopyrite by ceramic media type, which has lower electrochemical activity in comparison with the other considered media, can be resulted in a higher flotation rate constant and ultimate recovery. Grinding the mixture of chalcopyrite and pyrite by steel or chromium media can show almost the same effect on the flotation rate constant and ultimate recovery. In general, the results of conducted tests showed by increasing the galvanic interaction, the flotation recovery and flotation kinetics were decreased. | ||
| کلیدواژه‌ها | ||
| galvanic interaction؛ grinding balls؛ chalcopyrite؛ pyrite؛ EDTA extraction | ||
| عنوان مقاله [English] | ||
| Effect of Galvanic Interactions between Grinding Media and Sulfide Minerals on Flotation Kinetics of Chalcopyrite | ||
| نویسندگان [English] | ||
| Elmira Ravanasa1؛ Gholamreza Karimi2؛ Rahman Ahmadi3 | ||
| 1Graduated student | ||
| 2professor of IKIU | ||
| 3Professor of IKIU | ||
| چکیده [English] | ||
| Abstract: Although the flotation separation of sulfides and their electrochemical interactions have been examined in some investigations, study the direct relationship between the flotation kinetics of sulfides and their galvanic interactions during the process yet have not been addressed. To fill this gap, an extensive study was conducted to explored the effect of galvanic interactions for chalcopyrite and pyrite on their flotation kinetics when they wet ground by three different grinding media types (steel, chromium, and ceramic). Assessment of the flotation test results indicated that there was no galvanic interaction between the ceramic grinding balls and chalcopyrite. The galvanic interactions were mostly related to the grinding of chalcopyrite by steel balls. EDTA analyses showed by increasing the amount of iron oxy/hydroxy and their precipitations on the surface of chalcopyrite, the recovery of chalcopyrite was decreased. Furthermore, increasing the pyrite content in the flotation of chalcopyrite increased the flotation rate constant and then decreased it. Flotation tests demonstrated that grinding chalcopyrite by ceramic media type, which has lower electrochemical activity in comparison with the other considered media, can be resulted in a higher flotation rate constant and ultimate recovery. Grinding the mixture of chalcopyrite and pyrite by steel or chromium media can show almost the same effect on the flotation rate constant and ultimate recovery. In general, the results of conducted tests showed by increasing the galvanic interaction, the flotation recovery and flotation kinetics were decreased. | ||
| کلیدواژه‌ها [English] | ||
| galvanic interaction, grinding balls, chalcopyrite, pyrite, EDTA extraction | ||
| مراجع | ||
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آمار تعداد مشاهده مقاله: 180 |
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