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Title:
GREEN AND ENVIRONMENTALLY FRIENDLY METHOD FOR PRODUCING MAGNESIUM BY MEANS OF ALUMINOTHERMIC REDUCTION
Document Type and Number:
WIPO Patent Application WO/2024/056107
Kind Code:
A1
Abstract:
A method for producing magnesium by means of aluminothermic reduction, the method comprising the following steps: mixing, at a certain ratio until uniform, magnesium oxide and an aluminum powder that have particle sizes meeting standards; pressing same into clumps after uniform mixing, and adding same to a vacuum feeding device; heating same in a vacuum environment and maintaining the temperature, wherein the material clumps are heated in a high-temperature material pipe to undergo a reduction reaction so as to generate magnesium vapor and a solid reduction slag; and continuing heating same in the vacuum environment and maintaining the temperature, so as to make the solid reduction slag generate magnesia-alumina spinel. In the method for producing magnesium by means of aluminothermic reduction, heating processes at different temperatures are respectively carried out in the same reaction container at different time periods, and two products, i.e. high-purity crude magnesium and magnesia-alumina spinel, are respectively produced; and there is no need to use a reduction furnace composed of an induction furnace and a microwave heating furnace, the whole heating reaction process flow can be realized by using a microwave heating furnace alone, and therefore the process is more concise and optimized, operation is simpler, and the production procedure is more consistent.

Inventors:
WU XI (CN)
ZHAO YUE (CN)
LI PINGCENG (CN)
WANG NAIYUAN (CN)
Application Number:
PCT/CN2023/131065
Publication Date:
March 21, 2024
Filing Date:
November 10, 2023
Export Citation:
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Assignee:
XIAN GUSHENG MAGNESIUM NEW MATERIAL TECH CO LTD (CN)
International Classes:
C22B26/22; C22B1/24; C22B5/04; C22B5/16
Domestic Patent References:
WO2017081886A12017-05-18
Foreign References:
CN115807171A2023-03-17
CN110512094A2019-11-29
CN111748691A2020-10-09
CN102808089A2012-12-05
CN103374665A2013-10-30
Attorney, Agent or Firm:
GUANGDONG YUANSHENG ZHIHE INTELLECTUAL PROPERTY AGENCY (GENERAL PARTNERSHIP) (CN)
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