An iron ore magnetic separator is a machine used to extract and concentrate iron ore from raw materials by utilizing magnetic forces. These separators are crucial in mineral processing to remove impurities and enhance the purity of iron ore.
Types of Magnetic Separators for Iron Ore
1. Low-Intensity Magnetic Separators (LIMS)
– Used for magnetite (Fe₃O₄), a strongly magnetic mineral.
– Common types:
– Wet Drum Magnetic Separators – Separate magnetite from slurries in processing plants.
– Dry Drum Magnetic Separators – Used when water is scarce or for coarse particles.
2. High-Intensity Magnetic Separators (HIMS)
– Used for weakly magnetic minerals like hematite (Fe₂O₃), limonite, or siderite.
– Common types:
– Induced Roll Magnetic Separators (IRMS) – For dry processing of fine particles.
– Wet High-Gradient Magnetic Separators (WHGMS) – Use matrices to capture fine weakly magnetic particles. .jpg)
3. High-Gradient Magnetic Separators (HGMS)
– Used for ultrafine iron ore recovery (<0.1 mm).
– Often applied in tailings reprocessing to recover lost iron content..jpg)
Working Principle
- A magnetic field attracts ferromagnetic or paramagnetic iron minerals while non-magnetic gangue (waste rock) passes through.
- Adjustable parameters include:
- Beneficiation of low-grade iron ores.
- Removal of impurities like silica and alumina.
- Recovery of iron from waste streams (tailings reprocessing).
- Metso Outotec
- Eriez Magnetics
- SLon Magnetic Separator Ltd.
- STEINERT
- Goudsmit Magnetics
– Magnetic field strength (~1000–20,000 Gauss).
– Feed rate, particle size, and slurry density (for wet separators).
Applications
Key Manufacturers
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