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The upgrading of low-grade iron ore: optimization of recovery and reduction of feed volume | ||
| International Journal of Mining and Geo-Engineering | ||
| مقاله 9، دوره 59، شماره 2، شهریور 2025، صفحه 165-170 اصل مقاله (592.24 K) | ||
| نوع مقاله: Research Paper | ||
| شناسه دیجیتال (DOI): 10.22059/ijmge.2025.395655.595259 | ||
| نویسندگان | ||
| Mahdieh Seyfi؛ Parviz Pourghahramani* | ||
| Mining Engineering Department, Tabriz University of Technology, Tabriz, Iran. | ||
| چکیده | ||
| The present study investigated the potential for iron recovery from magnetite-bearing iron ore tailings at the Sangan Company’s old dumps, aiming to reduce environmental challenges through wet magnetic separation as a pre-beneficiation stage. This method selectively removed coarse gangue while maximizing magnetite recovery. A full factorial experimental design evaluated the effects of magnetic field intensity (1200, 2700, 3400 gauss), drum speed (1, 1.4 m/s), and pulp solids content (25%, 35%). Concentrate analysis was performed using titration and Satmagan methods. Partial Least Squares (PLS) modeling revealed that higher magnetic field intensities significantly improved magnetite recovery, enabling a feed mass reduction of 18–22% with negligible magnetite loss (~2–3%). Magnetite recovery from tailings represents a novel approach, achieving up to 97.21% recovery under optimal conditions. Davis Tube tests confirmed that lost magnetite, with iron grades below 13.63%, is unsuitable for the final concentrate, enhancing overall concentrate quality by its removal. This pre-upgrading process improves concentrate quality, reduces operating costs, and supports sustainable tailings management. | ||
| کلیدواژه‌ها | ||
| Low-grade Iron ore؛ Magnetic separation؛ Upgrading؛ Pre-processing؛ Design of experiments | ||
| مراجع | ||
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