Optimization and mechanism of gold-bearing sulfide flotation
| Autor: | Wan-Zhong Yin, Ji-Zhen Wang, Chun-Bao Sun, Zhong-Mei Sun |
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| Rok vydání: | 2014 |
| Předmět: |
Arsenopyrite
chemistry.chemical_classification Materials science Gold cyanidation Sulfide Metallurgy Metals and Alloys engineering.material Condensed Matter Physics Grinding chemistry Reagent Gold particles visual_art Metallic materials Materials Chemistry visual_art.visual_art_medium engineering Pyrite Physical and Theoretical Chemistry |
| Zdroj: | Rare Metals. 33:363-368 |
| ISSN: | 1867-7185 1001-0521 |
| DOI: | 10.1007/s12598-014-0288-1 |
| Popis: | In order to overcome the difficulty of extracting gold from gold-bearing sulfide ore by cyanide process, flotation was adopted based on mineralogical analysis. Mineralogy shows that gold particles are of superfine structure and mainly enclosed by sulfide ores. Primary gold-bearing sulfide ore is fine-grained pyrite and arsenopyrite. The paper describes the effects of ratios and dosage of activators and collectors on the recovery and grade of gold concentrate. A proper flotation flowsheet was then proposed based on experimental condition and closed-circuit test. The gold concentrate with the gold grade of 25.14 g·ton−1 and the recovery of 86.94 % is obtained after one rougher, three cleaners, and four scavengers from fine grinding flotation process. Furthermore, the mechanisms of combined activators and combined collectors were studied by thermodynamic calculation, and structure–activity relationship of flotation reagent was also explained. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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