Three-Disc Magnetic Separator in Mineral Processing

The three-disc belt magnetic separator with adjustable magnetic intensity is primarily employed in the dry separation stage for the concentration and purification of weakly magnetic minerals. It is highly effective in processing a range of fine-grained materials, including but not limited to ilmenite, monazite, tungsten ore, tantalite, zircon, and rare earth minerals.

This equipment is a staple in specific mineral processing flowsheets, most notably in beach sand processing plants and rare earth element (REE) beneficiation lines. It is often integrated into circuits where dry separation is preferred or necessary, following initial crushing and screening stages, to extract valuable magnetic or paramagnetic components from non-magnetic gangue.

Its working principle leverages magnetic force. As the finely ground ore is fed onto a moving belt passing under three independently rotating magnetic discs, the adjustable high-intensity magnetic fields generated by these discs attract and hold weakly magnetic particles. These are discharged separately from the non-magnetic particles, which continue their trajectory off the belt's end. The key advantages and features of this separator include its high recovery rate for fine, weakly magnetic materials, the crucial flexibility of adjustable magnetic intensity via control of the current to each disc, which allows for precise separation tuning. Furthermore, it offers a compact, dry processing method, eliminating the need for water—a significant benefit in arid regions or for moisture-sensitive ores.