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Method and device for recovering hydrogen pulverized powder of raw-material alloy for rare-earth magnet
US8979973B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8979973-B2 |
| Application number | US-201013387825-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 7, 2010 |
| Priority date | Jul 31, 2009 |
| Publication date | Mar 17, 2015 |
| Grant date | Mar 17, 2015 |
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Abstract
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A method and a device for recovering hydrogen pulverized powder of a raw-material alloy for rare-earth magnets capable of lowering a possibility that hydrogen pulverized powder after hydrogen was pulverized remains in a recovery chamber and capable of enhancing magnetic properties by reducing an amount of oxygen of an obtained rare-earth magnet, a processing container 50 is carried into a recovery chamber 40 from a processing chamber through a carry-in port after inert gas was introduced into the recovery chamber 40 by inert gas introducing means 12 , the raw-material alloy for rare-earth magnets in the processing container 50 is discharged into the recovery chamber 40 after the pressure in the recovery chamber 40 was reduced by evacuating means 33 and thereafter, inert gas is introduced into the recovery chamber 40 by inert gas introducing means 12 , and the raw-material alloy for rare-earth magnets is recovered into the recovery container 50 from an discharge port 40 a after a pressure in the recovery chamber 40 was set to a predetermined pressure by inert gas.
First claim
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The invention claimed is: 1. A method for recovering hydrogen pulverized powder of a raw-material alloy for rare-earth magnets, comprising a hydrogen storing step of storing hydrogen into the raw-material alloy for rare-earth magnets accommodated in a processing container, a heating step of heating the raw-material alloy for rare-earth magnets which are already pulverized by storing the hydrogen and dehydrogenating the raw-material alloy, a cooling step of cooling the heated r…
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- What does patent US8979973B2 cover?
- A method and a device for recovering hydrogen pulverized powder of a raw-material alloy for rare-earth magnets capable of lowering a possibility that hydrogen pulverized powder after hydrogen was pulverized remains in a recovery chamber and capable of enhancing magnetic properties by reducing an amount of oxygen of an obtained rare-earth magnet, a processing container 50 is carried into a rec…
- Who is the assignee on this patent?
- Nakayama Shoji, Sonoda Kazuhiro, Sanai Jyunichi, and 1 more
- What technology area does this patent fall under?
- Primary CPC classification C22C28/00. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 17 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).