Patent · US Active

Method and plant for the production of a starting material for the production of rare earth magnets

US11309127B2 · kind B2 · utility

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12Claims

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Assignee

NETZSCH Trockenmahltechnik GmbH · DE

Inventors

Frank Winter · Mühlheim, DE
Wilhelm Fernengel · Kleinostheim, DE

Key dates

Filing date	May 14, 2019
Grant date	Apr 19, 2022
Priority date	—
Expiry date	Apr 2, 2040

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C2202/02
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method and a plant for the production of a powdery material, which is provided for the manufacture of rare earth magnets. First of all, at least one magnetic or magnetizable raw material, respectively, is provided and is comminuted into a powdery intermediate product, which includes powder particles including corners and edges, by means of conventional comminuting methods. The sharp-edged powder particles are chamfered subsequently. The optimized powdery product including the chamfered powder particles is used for the manufacture of rare earth magnets.

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