A High Gradient Magnetic Separator (HGMS) is an advanced magnetic separation technology designed to extract weakly magnetic particles or fine particles from liquids, slurries, or gases. It achieves high selectivity and efficiency by generating extremely strong magnetic field gradients (up to several Tesla) using a matrix of ferromagnetic materials (например, steel wool, расширенный металл, or plates) placed in the magnetic field.

Key Features of HGMS:
1. High Magnetic Gradient:
- Uses a magnetized matrix (например, stainless steel wool) to create localized high gradients, enabling the capture of fine or weakly magnetic materials (например, оксиды железа, paramagnetic minerals).

2. Strong Background Field:
- Generated by superconducting magnets (for high fields >2Т) or rare-earth permanent magnets (for lower fields).

3. Приложения:
- Переработка полезных ископаемых: Removal of iron impurities from kaolin, кварц, полевой шпат.
- Очистка воды: Heavy metal removal (например, arsenic, хром).
- Переработка: Recovery of metals from waste streams.
- Biomedical/Life Sciences: Cell sorting, protein purification.

4. Operation Modes:
- Batch Mode: Matrix is cleaned after saturation.
- Continuous Mode: Self-cleaning systems for industrial-scale use.

5. Advantages Over Conventional Magnetic Separators:
- Higher recovery of ultrafine particles (<1 мкм).
- Better selectivity for low-susceptibility materials.

Ограничения:
- High energy consumption (if using superconducting magnets).
- Matrix clogging in high-solid-content feeds.

Example Manufacturers:
- Eriez Magnetics
- SLon Magnetic Separator Ltd. (Китай)
- Аутотек ()

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