Patent ID: 11938490
Assignee: FERROLOGIX, INC.
Field: Measurement (Instruments)
Classification: CPC B  C  G | IPC B  C  G

Claim 0:
1. A system for magnetic separation of magnetic bodies comprising:
a substrate;
a plurality of ferromagnetic elements spaced apart in pitch zones on the substrate, with the spacing between adjacent ferromagnetic elements increasing in a direction along a vector of ferromagnetic elements, and the increase in spacing between adjacent ferromagnetic elements is within a range of 10 μm to 100 μm;
a support surface over the ferromagnetic elements;
a magnetic field generator disposed adjacent to the support surface, the magnetic field generator configured to generate a continuously rotating sinusoidal magnetic field;
a channel over the support surface; and
a plurality of extraction gates aligned over the pitch zones, the extraction gates movable to open or close off the channel to separate magnetic or non-magnetic bodies in a plurality of ranges.