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1.发明公开公开(公告)号：US20240001440A1
公开(公告)日：2024-01-04
申请号：US18075741
申请日：2022-12-06
申请人： Hyundai Motor Company , Kia Corporation , Industry-University Cooperation Foundation Hanyang University ERICA Campus
发明人： Bo Kyeong Han , Yong-Ho Choa , Saemee Yun , Jimin Lee , Byungkwon Jang
CPC分类号： B22F1/142 , H01F1/057 , B22F9/04 , C01G49/009 , B22F2201/20
摘要： Provided is a cleaning device for cleaning a magnet powder including: a flask provided to contain the magnet powder and a cleaning material used to clean the magnet powder; and a vacuum manifold provided to maintain the magnet powder and the cleaning material contained in the flask in an inert state during cleaning.
Provided is a method for cleaning a magnet powder including a loading operation for loading a magnet powder, a cleaning solution, and zeolite into a flask; a gas injecting operation for injecting an inert gas into the flask; and a vacuum drying operation for drying the magnet powder and the zeolite in a vacuum.
Provided is a method for manufacturing a magnet powder including: preparing a primary mixture by mixing neodymium (III) nitrate, boric acid, and iron (III) nitrate nonahydrate; preparing an oxide by heat-treating the primary mixture; removing a residual organic material of the oxide by heat-treating the oxide; preparing a hydrogen-reduced oxide by reacting the oxide, from which the residual organic material is removed, with hydrogen by heat treatment; preparing a secondary mixture by mixing the hydrogen-reduced oxide with calcium; obtaining a product by subjecting the secondary mixture to reduction-diffusion reaction by heat treatment; and obtaining Nd2Fe14B powder by pulverizing the product.-
2.发明公开公开(公告)号：US20240278317A1
公开(公告)日：2024-08-22
申请号：US18626129
申请日：2024-04-03
发明人： Bo Kyeong Han , Yong-Ho Choa , Saemee Yun , Jimin Lee , Byungkwon Jang
CPC分类号： B22F1/142 , B08B3/08 , B08B3/102 , B08B13/00 , B22F9/04 , C01G49/009 , H01F1/057 , H01F1/0573 , B22F2201/20
摘要： Provided is a cleaning device for cleaning a magnet powder including: a flask provided to contain the magnet powder and a cleaning material used to clean the magnet powder; and a vacuum manifold provided to maintain the magnet powder and the cleaning material contained in the flask in an inert state during cleaning.
Provided is a method for cleaning a magnet powder including a loading operation for loading a magnet powder, a cleaning solution, and zeolite into a flask; a gas injecting operation for injecting an inert gas into the flask; and a vacuum drying operation for drying the magnet powder and the zeolite in a vacuum.
Provided is a method for manufacturing a magnet powder including: preparing a primary mixture by mixing neodymium (III) nitrate, boric acid, and iron (III) nitrate nonahydrate; preparing an oxide by heat-treating the primary mixture; removing a residual organic material of the oxide by heat-treating the oxide; preparing a hydrogen-reduced oxide by reacting the oxide, from which the residual organic material is removed, with hydrogen by heat treatment; preparing a secondary mixture by mixing the hydrogen-reduced oxide with calcium; obtaining a product by subjecting the secondary mixture to reduction-diffusion reaction by heat treatment; and obtaining Nd2Fe14B powder by pulverizing the product.
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