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Agglomeration-Flotation of Finely Ground Chalcopyrite and Quartz: Effects of Agitation Strength during Agglomeration Using Emulsified Oil on Chalcopyrite
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| Title: | Agglomeration-Flotation of Finely Ground Chalcopyrite and Quartz: Effects of Agitation Strength during Agglomeration Using Emulsified Oil on Chalcopyrite |
| Authors: | Hornn, Vothy Browse this author | | Ito, Mayumi Browse this author →KAKEN DB | | Shimada, Hiromasa Browse this author | | Tabelin, Carlito Baltazar Browse this author | | Jeon, Sanghee Browse this author →KAKEN DB | | Park, Ilhwan Browse this author | | Hiroyoshi, Naoki Browse this author →KAKEN DB |
| Keywords: | agglomeration | | emulsified oil | | agitation strength | | flotation | | chalcopyrite | | fine particles | | separation efficiency |
| Issue Date: | Apr-2020 |
| Publisher: | MDPI |
| Journal Title: | Minerals |
| Volume: | 10 |
| Issue: | 4 |
| Start Page: | 380 |
| Publisher DOI: | 10.3390/min10040380 |
| Abstract: | In flotation, the size of mineral particles is one of the most important parameters: when the size becomes fine, collision efficiency of the particles and air bubbles becomes low, causing low flotation recovery. To improve the collision efficiency and flotation kinetics, agglomeration using the emulsified oil of finely ground chalcopyrite (D-50 = 3.5 mu m) was carried out before flotation. In this study, the effects of agitation strength during agglomeration, kerosene dosage and potassium amyl xanthate (KAX) dosage on the flotation were investigated. Agglomeration using emulsified oil improved Cu recovery because the median diameter of agglomerate increased. With increasing agitation strength, KAX and kerosene dosages, Cu recovery was further increased. Agglomeration-flotation of a mixture containing chalcopyrite and quartz with 1:1 ratio (w/w, weight by weight) showed that Si recovery in froth was low and did not change with varying conditions (agitation strength, KAX and kerosene dosages); however, Cu recovery was significantly improved with increasing agitation strength, KAX and kerosene dosages, and thus the separation efficiency was improved. |
| Rights: | © 2020 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). | | http://creativecommons.org/licenses/by/4.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/78778 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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