Patent · US Active

Method and installation for manufacturing a starting material for producing rare earth magnets

US11660639B2 · kind B2 · utility

0Cited by

2References

11Claims

0Family size

Assignee

NETZSCH Trockenmahltechnik GmbH · DE

Inventors

Frank Winter · Mühlheim, DE
Hermann Sickel · Karlstadt, DE
Wilhelm Femengel · Kleinostheim, DE

Key dates

Filing date	Jul 13, 2018
Grant date	May 30, 2023
Priority date	—
Expiry date	Oct 22, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH01F41/0266
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A method for producing a powdered starting material, which is provided for production of rare earth magnets, including includes the following steps: pulverizing an alloy, including at least one rare earth metal, wherein a powdered intermediate product is formed from the alloy including the at least one rare earth metal, and carrying out at least one classification aimed at particle size and/or particle density for the powdered intermediate product. A fraction of the powdered intermediate product, which is formed by the at least one classification, is used for fabrication of rare earth magnets. Furthermore, at least one dynamic classifier is provided, implementing at least one classification directed at particle size and/or particle density for the powdered intermediate product and thereby separates the fraction from the powdered intermediate product, which forms the starting material for manufacturing rare earth magnets.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.