Title:
多段・高度還元による高融点金属粉末の製造方法
Document Type and Number:
Japanese Patent JP6886046
Kind Code:
B2
Abstract:
The invention relates to a method for preparing high-melting-point metal powder through multi-stage deep reduction, and belongs to the technical field of preparation of powder. The method includes the following steps of mixing dried high-melting-point metal oxide powder with magnesium powder and performing a self-propagating reaction, placing an intermediate product into a closed reaction kettle, leaching the intermediate product with hydrochloric acid as a leaching solution so as to obtain a low-valence oxide MexO precursor of the low-valence high-melting-point metal; uniformly mixing the precursor with calcium powder, pressing the mixture, placing the pressed mixture into a vacuum reduction furnace, heating the vacuum reduction furnace to 700-1200° C., performing deep reduction for 1-6 h, leaching a deep reduction product with hydrochloric acid as a leaching solution and performing treatment, so as to obtain the high-melting-point metal powder.
Inventors:
Chang'an
Mameshi River
Liu Yan
Papier tree
Lu Guo
Zhao Akizuki
Ushirei
Fu University
Zhang Weiwang
Mameshi River
Liu Yan
Papier tree
Lu Guo
Zhao Akizuki
Ushirei
Fu University
Zhang Weiwang
Application Number:
JP2019561878A
Publication Date:
June 16, 2021
Filing Date:
May 21, 2018
Export Citation:
Assignee:
Northeastern University
International Classes:
B22F9/20; C22B3/10; C22B5/04; C22B5/18; C22B34/14; C22B34/22; C22B34/24; C22B34/34; C22B34/36; C22B61/00
Domestic Patent References:
| JP2008106364A | ||||
| JP2006336112A | ||||
| JP2012036440A | ||||
| JP58077506A | ||||
| JP2012107337A | ||||
| JP2015536384A |
Foreign References:
| CN103466648A | ||||
| CN104131178A |
Attorney, Agent or Firm:
sk patent corporation
Akihiko Okuno
Hiroyuki Ito
Akihiko Okuno
Hiroyuki Ito