Patent ID: 11958057
Assignee: nan
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 19:
20. A method of magnetically separating particles, comprising:
passing a material feed through a magnetic matrix; wherein
the magnetic matrix comprises a plurality of plates, comprising inner plates and outer plates, with at least the inner plates being formed as grooved plates having first and second sides that both have an alternating series of teeth and grooves therealong, with adjacent inner plates of the magnetic matrix separated from one another by a gap, the gap having a width in a range from about 0.3175 mm to about 2.116 mm, and the inner plates having a pitch such that the magnetic matrix has a pitch-to-gap ratio in a range of 3:1 to 20:1, and
the material feed comprises magnetic and non-magnetic ultrafine particles.