Title:
APPARATUS AND METHOD FOR MAGNESIUM PRODUCTION BY MEANS OF VACUUM CARBOTHERMIC REDUCTION OF CALCINED DOLOMITE
Document Type and Number:
WIPO Patent Application WO/2024/045562
Kind Code:
A1
Abstract:
The present invention relates to the technical field of magnesium metallurgy, in particular to an apparatus and method for magnesium production by means of vacuum carbothermic reduction of calcined dolomite. The apparatus comprises a reaction chamber, a condensation chamber, a first temperature regulation and control module, and an air pressure regulation and control module, wherein the reaction chamber communicates with the condensation chamber via a drainage pipeline, and the drainage pipeline is used for achieving dynamic balance of the condensation process of gas products in the condensation chamber; and a plurality of condensation zones are arranged in the condensation chamber. In the present invention, gas products are sequentially condensed according to different dew points from high to low by using different condensation zones, such that impurities are effectively prevented from being mixed into the condensation process of magnesium; moreover, on the basis of the dynamic balance of the condensation process of gas products in the condensation chamber, magnesium can not only be efficiently condensed and collected in a middle-section condensation zone, but can also be prevented from undergoing a reverse reaction with CO in a magnesium condensation zone, such that the condensation purification effect is improved; and in addition, during the production of magnesium by means of vacuum carbothermic reduction of calcined dolomite, the addition of a catalyst can obviously improve the degree of reaction reduction, and the catalytic effect of a sodium fluoride catalyst is significantly superior to that of a calcium fluoride catalyst.
Inventors:
TIAN YANG (CN)
MA TINGZHUANG (CN)
YANG BIN (CN)
XU BAOQIANG (CN)
JIANG WENLONG (CN)
WANG FEI (CN)
LI YIFU (CN)
WANG LIPENG (CN)
LIANG DONG (CN)
YU RONG (CN)
MA TINGZHUANG (CN)
YANG BIN (CN)
XU BAOQIANG (CN)
JIANG WENLONG (CN)
WANG FEI (CN)
LI YIFU (CN)
WANG LIPENG (CN)
LIANG DONG (CN)
YU RONG (CN)
Application Number:
PCT/CN2023/082065
Publication Date:
March 07, 2024
Filing Date:
March 17, 2023
Export Citation:
Assignee:
UNIV KUNMING SCIENCE & TECHNOLOGY (CN)
International Classes:
C22B5/16; C22B5/10; C22B26/22
Domestic Patent References:
| WO1996026297A1 | 1996-08-29 |
Foreign References:
| CN115449648A | 2022-12-09 | |||
| CN102706144A | 2012-10-03 | |||
| CN1769505A | 2006-05-10 | |||
| CN107723472A | 2018-02-23 | |||
| CN104561601A | 2015-04-29 | |||
| CN204063931U | 2014-12-31 | |||
| JP5945373B1 | 2016-07-05 |
Attorney, Agent or Firm:
SICHUAN ZHONGDAI INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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