A method and device for gas-phase magnesium purification based on nickel-based filter material

A filter material, nickel-based technology, applied in the field of gas-phase magnesium purification based on nickel-based filter material, can solve the problems of low yield of high-purity magnesium, low preparation efficiency, high cost, etc., to simplify the production process, reduce the nucleation energy barrier, The effect of improving productivity
CN110835695BActive Publication Date: 2021-11-23国科镁业科技(河南)有限公司
0 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
国科镁业科技(河南)有限公司
Publication Date
2021-11-23

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a method for purifying magnesium in the vapor phase based on a nickel-based filter material. The method uses a nickel-based filter material to filter magnesium vapor. Under a certain temperature and vacuum degree, the nickel material does not react with the magnesium vapor on the one hand. It will not bring new impurities to the system; on the other hand, the nickel material has a special affinity with the impurities Al and Mn in the magnesium vapor, and can form a stable solid solution; at the same time, the nickel material can also be used as some impurities in the magnesium vapor The nucleation site lowers the nucleation energy barrier and enables some impurities to be deposited in advance to achieve removal. The method provided by the invention can be applied to industrialized large-scale gas-phase magnesium purification, while improving the production efficiency by an order of magnitude, the Mn content in magnesium is reduced to below 10ppm, the Al content is reduced to below 10ppm, and the Si content is below 20ppm. Non-metallic impurity elements such as F, Cl, S, etc. improve product purity, and the purity of the obtained magnesium is above 99.99%.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of metal magnesium purification, in particular to a method and device for gas-phase magnesium purification based on a nickel-based filter material. Background technique

[0002] Magnesium alloy has the advantages of low density, strong damping and shock absorption, excellent electromagnetic shielding performance and relatively low recycling cost. Therefore, it is regarded as "21st century green environmental protection engineering structural material" and an important strategic material. At present, in the field of magnesium purification, there are chronic problems such as low overall product purity (only 99.90%), many types of impurity elements (mainly containing Mn, Al, Ca, Si, Fe, Ni, etc.), and large content fluctuations. These chronic problems seriously deteriorate the performance of magnesium alloys, which in turn leads to its practical application far less than expected.

[0003] There are two common...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More