
Low-silicon iron powder (especially the type with 14–16% Si content and 80–83% Fe content) is widely used as a heavy medium for flotation and separation of minerals such as gold, diamonds, fluorite, lithium, copper, scrap aluminum, and recycled aluminum. Its high density and magnetic properties facilitate effective separation of target minerals from impurities
It can be used as raw material for manufacturing high-precision metal components, such as bearings and gears, and is particularly suitable for scenarios requiring high material purity and uniformity
As an additive in the flux coating of welding electrodes, it improves welding performance
Used as a reducing agent or additive in specific chemical reactions
It can be used for manufacturing soft/hard magnetic materials, ferrites, inductors, etc., but such applications typically require extremely low silicon content (<0.5%), while industrial-grade low-silicon iron powder (Si≈15%) is generally unsuitable for this scenario
| Component | Silicon | Iron | Carbon | Sulfur | Phosphorus |
|---|---|---|---|---|---|
| Ferrosilicon | 14.0-16.0% | >80.0% | <0.6% | <0.02% | <0.03% |
| Item | Specification (Particle size, μm) | 48D | 100# | 65D | 100D | 150D | 270D |
|---|---|---|---|---|---|---|---|
| On 75 mesh | >212 μm | 0-2 | 0-3 | 0-1 | 0-1 | 0-1 | 0 |
| On 100 mesh | 150-212 μm | 4-8 | 1-5 | 0-3 | 0-1 | 0-1 | 0 |
| On 150 mesh | 106-150 μm | 12-18 | 6-12 | 4-8 | 1-4 | 0-2 | 0-1 |
| On 200 mesh | 75-106 μm | 19-27 | 12-20 | 9-17 | 5-10 | 2-6 | 0-3 |
| On 300 mesh | 45-75 μm | 20-28 | 29-37 | 24-32 | 20-28 | 13-21 | 7-11 |
| Through 300 mesh | <45 μm | 27-35 | 32-40 | 47-55 | 61-69 | 73-81 | 85-93 |