Method for recovering heavy rare earth element
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 19, 2019
Grant Date -
Dec 17, 2015
app pub date -
Jan 27, 2014
filing date -
Jan 28, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An object of the present invention is to provide a method for recovering a heavy rare earth element from a workpiece containing at least a heavy rare earth element and an iron group element, which can be put into practical use as a low-cost, simple recycling system. The method for recovering a heavy rare earth element from a workpiece containing at least a heavy rare earth element and an iron group element of the present invention as a means for resolution is characterized by including at least the following step: a workpiece is subjected to an oxidation treatment or mixed with an oxidation-treated R—Fe—B based magnet alloy, and then subjected to a heat treatment in the presence of carbon at a temperature of 1000° C. or more, thereby separating a heavy rare earth element in the form of an oxide from an iron group element.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully