Comparison of iron ores upgraded with Falcon concentrator and magnetic separators assisted by coal reduction-conversion process
| Autor: | Hüseyin Vapur, Mahmut Altiner, Musa Sarikaya, Şükrü Uçkun, Soner Top |
|---|---|
| Přispěvatelé: | Çukurova Üniversitesi |
| Rok vydání: | 2019 |
| Předmět: |
magnetite
Materials science General Chemical Engineering Magnetic separation Hematite reduction 02 engineering and technology engineering.material Concentrator chemistry.chemical_compound 020401 chemical engineering Coal magnetic separation 0204 chemical engineering Magnetite Roasting Falcon separator business.industry Metallurgy Beneficiation 021001 nanoscience & nanotechnology Iron ore chemistry visual_art visual_art.visual_art_medium engineering 0210 nano-technology business |
| Zdroj: | Particulate Science and Technology. 38:409-418 |
| ISSN: | 1548-0046 0272-6351 |
| DOI: | 10.1080/02726351.2018.1548532 |
| Popis: | This study investigated the effects of iron ore roasting on iron ore beneficiation. Hematite-magnetite conversion was comprehensively investigated and characterized by XRD, SEM, and M–H analyses. The magnetic susceptibilities of the materials were shown by Honda–Owen plots. The optimum magnetite transformation conditions were found as 800°C temperature, 10 wt.% coal and 10 min reaction time. Preliminary tests with the unroasted ores were conducted before the optimization and comparison tests. The Box Behnken test design was used for modeling the falcon concentrator separation tests. High-intensity wet magnetic, low-intensity dry magnetic and falcon gravity separators were applied to the roasted and unroasted ores at the optimum test conditions. After conversion, the iron concentrations in the grade that could be sold (>56% Fe) were obtained by the wet magnetic separator and the falcon gravity separator with the recovery yields of 90.87 and 81.72%, respectively. The positive effects of roasting were observed in terms of concentrate yields for the wet magnetic separation and gravity separation methods. However, desired saleable iron concentrates were not achieved by dry magnetic separation experiments, although the recovery yields were raised above 80% after the conversion process. © 2018, © 2018 Taylor & Francis Group, LLC. |
| Databáze: | OpenAIRE |
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