Magnetic separation system and devices

Patent metadata

Field	Value
Publication number	US-12115537-B2
Application number	US-201816763790-A
Country	US
Kind code	B2
Filing date	Nov 14, 2018
Priority date	Nov 14, 2017
Publication date	Oct 15, 2024
Grant date	Oct 15, 2024

Abstract

Embodiments of the present disclosure include separating devices and systems and methods of use. Embodiments of the present disclosure include separation devices including magnetic arrays and sheet-flow separation chambers. In an embodiment, the separating device enables the generation of multiple, and in some configurations, intersecting, high gradient magnetic field lines, resulting in strong separation forces, which permit for scale up to large areas and/or volumes (e.g., extracorporeal blood filtration system).

First claim

We claim:

1. A separation device, consisting of: a magnetic array, and a horizontal sheet-flow separation chamber having only one entrance opening and only one exit opening, wherein the sheet-flow separation chamber is configured so that magnetic particles suspended in a fluid are continuously separated as the fluid flows across the sheet-flow separation chamber from the entrance opening to the exit opening, wherein dimensions of the fluid flow in plane are at least three times the depth of the fluid perpendicular to the plane, wherein the magnetic array is an electromagnet; and wherein the electromagnet comprises conducting coil loops and solenoids, magnetic coils, or combinations thereof, wherein the sheet-flow separation chamber is disposed under the magnetic array.

2. The separation device of claim 1 , wherein the magnetic array is configured to generate multiple high gradient magnetic field lines that result in strong separation forces applied to the magnetic particles.

3. The separation device of claim 1 , wherein the magnetic array is configured to generate multiple, intersecting, high gradient magnetic field lines that result in strong separation forces applied to the magnetic particles.

4. The separation device of claim 1 , wherein the magnetic array comprises 1 to 100 magnets and the length of each magnet is about 1 cm to 1.5 m.

5. The separation device of claim 1 , wherein the magnetic array is made of a rare earth metal material.

6. The separation device of claim 5 , wherein the rare earth metal material is selected from the group consisting of: Neodymium-Iron-Boron, Samarium-Cobalt, and AlNiCo.

7. The separation device of claim 1 , wherein the given flow rate is about 0.01 to 10 liters per minute.

8. A separation device, consisting of:
a magnetic array, and
a sheet-flow separation chamber consisting of one entrance opening and consisting of one exit opening, wherein the sheet-flow separation chamber is configured so that magnetic particles suspended in a fluid are continuously separated as the fluid flows across the horizontal plane of the sheet-flow separation chamber from the entrance opening to the exit opening, wherein dimensions of the fluid flow in plane are at least three times the depth of the fluid perpendicular to the plane,
wherein the magnetic array is an electromagnet; and wherein the electromagnet comprises conducting coil loops and solenoids, magnetic coils, or combinations thereof,
wherein the sheet-flow separation chamber is disposed on a side of the magnet array.

9. The separation device of claim 8 , wherein the magnetic array is configured to generate multiple high gradient magnetic field lines that result in strong separation forces applied to the magnetic particles.

10. The separation device of claim 8 , wherein the magnetic array is configured to generate multiple, intersecting, high gradient magnetic field lines that result in strong separation forces applied to the magnetic particles.

11. The separation device of claim 8 , wherein the magnetic array is made of a rare earth metal material.

12. The separation device of claim 11 , wherein the rare earth metal material is selected from the group consisting of: Neodymium-Iron-Boron, Samarium-Cobalt, and AlNiCo.

13. The separation device of claim 8 , wherein the given flow rate is about 0.01 to 10 liters per minute.

Assignees

• Univ Florida

Inventors

• Dobson Jon P
• Finger-Baker Isaac Ernest Philip

Classifications

• B03C2201/26

  for use in medical or biological applications · CPC title

• B03C2201/22

  characterised by the magnetic field, e.g. its shape or generation · CPC title

• B03C2201/18

  Magnetic separation whereby the particles are suspended in a liquid · CPC title

• B03C1/288 Primary

  disposed at the outer circumference of a recipient · CPC title

• B03C1/0335

  using coils · CPC title