Development of novel magnetic filter for paramagnetic particles in high gradient magnetic separation

We are conducting research and development of magnetic filters for magnetic separation targeting paramagnetic materials. In order to develop a new magnetic filter with a large magnetic gradient, stainless fiber (SUS430, 120 mm x 3 mm) with a triangular cross section was sintered with a high void ratio (~ 70%) and the magnetic filter (20 mm x 2 mm) was created. When this magnetic filter was used to perform magnetic separation of hematite (particle size 50 μm) under a maximum magnetic flux density of 1.49 T, high separation rates were obtained.