Title:
METHOD FOR IN-SITU SYNTHESIS OF TUNGSTEN CARBIDE POWDER
Document Type and Number:
WIPO Patent Application WO/2022/188240
Kind Code:
A1
Abstract:
A method for in-situ synthesis of tungsten carbide powder. In the method, a waste hard alloy is used as an electrode, and a molten salt electrolysis method is used to synthesize tungsten carbide powder in situ, wherein the molten salt electrolysis method implements electrolysis by using a bidirectional pulse. According to the method, a bidirectional pulse is used, and in a molten salt medium, a waste hard alloy is used as an electrode, wherein when the waste tungsten carbide is oxidized, tungsten is dissolved in an ionic form, deposited after a current direction is changed, and reacts with carbon anode mud in situ to generate tungsten carbide powder. According to the method, reasonable treatment of anode mud and high-end applications of recovery products are achieved, tungsten powder is processed into tungsten carbide without a complicated method, and high-performance tungsten carbide nano-powder is prepared by means of short-process recovery.
More Like This:
Inventors:
XI XIAOLI (CN)
ZHANG LIWEN (CN)
NIE ZUOREN (CN)
ZHANG LIWEN (CN)
NIE ZUOREN (CN)
Application Number:
PCT/CN2021/088333
Publication Date:
September 15, 2022
Filing Date:
April 20, 2021
Export Citation:
Assignee:
UNIV BEIJING TECHNOLOGY (CN)
International Classes:
B82Y30/00; C25B1/01; B82Y40/00; C25B1/50
Foreign References:
| CN104018190A | 2014-09-03 | |||
| CN111039290A | 2020-04-21 | |||
| CN109208046A | 2019-01-15 | |||
| CN108910966A | 2018-11-30 | |||
| CN106795580A | 2017-05-31 | |||
| CN106544701A | 2017-03-29 | |||
| CN105648465A | 2016-06-08 | |||
| US4234333A | 1980-11-18 |
Attorney, Agent or Firm:
CN-KNOWHOW INTELLECTUAL PROPERTY AGENT LIMITED (CN)
Download PDF: