Electromagnetic separation of powders
AssigneeRtx Corporation
InventorsDavid U. Furrer, Sergei F. Burlatsky, Iuliana Cernatescu, Andrew J. Boyne
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Abstract
An electromagnetic field separation system for separation of metallic powders including a sample introducer, wherein the sample to be introduced comprises particles; a first separator, wherein the first separator is configured to provide a differential charge to the particles of the sample; an electromagnetic separation stage comprising a second separator, wherein the second separator provides an electromagnetic field configured to separate the particles of the sample; and a recovery stage.
Claims19
An electromagnetic field separation system for separation of metallic powders comprising:
- a sample introducer for introducing a sample into an electromagnetic field generating system, wherein the sample to be introduced comprises particles;
- wherein the electromagnetic field generating system comprises:
- a first separator, wherein the first separator is configured to provide a differential charge to the particles of the sample;
- an electromagnetic separation stage comprising a second separator, wherein the second separator provides an electromagnetic field configured to separate the particles of the sample;
- a gas impingement system, wherein the gas impingement system provides an increased residence time in the electromagnetic field generating system for the particles subjected to the electromagnetic field, and
- a recovery stage.
A method to separate contaminants from metallic powder comprising:
- introducing a sample comprising particles to an electromagnetic field generating system, wherein the electromagnetic field generating system includes:
- a first separator, wherein the first separator is configured to provide a differential charge to the particles of the sample,
- an electromagnetic separation stage comprising a second separator, wherein the second separator provides an electromagnetic field,
- a gas impingement system;
- and
- a recovery stage;
- subjecting the sample to differential charging by the first separator to provide differentially charged particles;
- and
- subjecting the differentially charged particles to an electromagnetic field generated by the second separator,
- wherein the electromagnetic field provides electromagnetic separation of the differentially charged particles,
- wherein the differentially charged particles undergo the electromagnetic separation based on their electrostatic charge states, their paramagnetic properties, their ferromagnetic properties, or a combination thereof, and
- supplying a flow of inert gas in a first direction by the gas impingement system, and wherein the first direction is in an opposing direction to a direction of a powder particle flow;
- and
- increasing the residence time in the system for the differentially charged particles.
Dependencies are inferred from the claim text.