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New application of manganese nodule and preparation method of layered insertion-layer magnetic metal composite material

A technology of magnetic metals and composite materials, applied in the direction of the magnetism of inorganic materials, can solve the problems of complex nano-magnetic metal particle technology, little influence on electromagnetic properties, and performance degradation, and achieve the advantages of easy process, low cost, and inhibition of agglomeration Effect

Inactive Publication Date: 2018-11-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of nano-magnetic metal particles is complex and expensive; in addition, the agglomeration effect of nanoparticles will lead to its performance degradation
Some people have used natural minerals to carry magnetic metal particles, but only the surface of natural minerals is used as the carrier of nano-magnetic metal particles. Although the cost can be reduced to a certain extent, it has little effect on its electromagnetic properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] The preparation method of the layered intercalated magnetic metal particle composite material has the following steps:

[0032] The first step is to pre-treat oceanic manganese nodules. Crush the massive manganese nodules, and the powdered manganese nodules obtained by grinding are easier for the next reaction;

[0033] The second step is to extract layered minerals from manganese nodules. The strong oxidant for preparing layered minerals will corrode and oxidize the impurity minerals in the manganese nodules under high-temperature calcination, and provide potassium ions to exchange the sodium ions in the manganese nodules; after the persulfate reaction, the oxides or oxides in the sintered product treated by the strong oxidant The hydroxide is dissolved in a large amount, and a relatively pure layered mineral is obtained;

[0034] The third step is to prepare the layered mineral intercalated with the magnetic metal particle precursor. After the organic modifier is modified...

Embodiment 1

[0038] 1) After immersing the raw oceanic manganese nodules in simulated seawater for 7 days, they are crushed and ground. Ultrasonic treatment was performed for 60 min to make it fully dispersed, and centrifuged at a speed of 15000 rpm for 30 min. The lower layer of granular sediment was collected and dried at 150 ℃ for 48 h.

[0039] 2) Take the processed manganese nodules and mix with a certain amount of potassium permanganate at a mass ratio of 10:1, add a small amount of oleic acid to grind to make the mixture uniform, and calcinate the mixture at 1500 ℃ for 12 h. Put the calcined product into an Erlenmeyer flask containing 2 mol / L ammonium persulfate solution and stir for 120 min. After the reaction, filter and wash, and keep the filter residue at 150°C for 24 hours to obtain layered minerals;

[0040] 3) After ultrasonically dispersing the layered minerals, add the layered minerals to cetyltrimethylammonium bromide with 2 times the ion exchange capacity, and stir for 12 hou...

Embodiment 2

[0043] 1) After immersing the raw oceanic manganese nodules in simulated seawater for 1 d, crush and grind. Ultrasonic treatment for 1 min to make it fully dispersed, and centrifugal separation at a speed of 500 rpm for 1 min, collect the lower layer of granular sediment, and dry it at 25°C for 2 h.

[0044] 2) Take the treated manganese nodules and mix with a certain amount of potassium nitrate at a mass ratio of 0.1:1, add a small amount of stearic acid to grind to make the mixture uniform, and calcinate the mixture at 500 ℃ for 1 h. Put the calcined product into an Erlenmeyer flask containing 0.1 mol / L potassium persulfate solution and stir for 10 min. After the reaction, it was filtered and washed, and the filter residue was kept at 60°C for 0.5 h to obtain layered minerals.

[0045] 3) After ultrasonically dispersing the layered minerals, add the layered minerals to cetylpyridinium chloride of 0.5 times the ion exchange capacity, and stir for 0.5 h at a constant temperature i...

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Abstract

The invention discloses new application of a manganese nodule and a preparation method of a layered insertion-layer magnetic metal composite material. The preparation method comprises the steps of firstly, taking oceanic manganese nodule raw ore as a material, and processing the material by a reagent such as a strong oxidization agent and persulfate to synthesize a manganese nodule layered mineral; secondly, performing organic modification on the synthesized layered mineral to prepare a modified layered mineral; and finally, jointly stirring a magnetic metal microparticle salt and the manganese nodule layered mineral to form an insertion-layer compound, and reducing with a strong reduction agent so that the magnetic metal microparticle salt is reduced among layers to form nanometer magnetic metal particles, wherein the obtained product is the layered mineral and nanometer magnetic metal microparticle insertion-layer composite material. By an interlayer range-limitation effect of the manganese nodule layered mineral, the agglomeration of the nanoparticles is effectively prevented; compared with the magnetic metal microparticle, the prepared composite material is relatively low in cost, has better catalytic and electromagnetic performance, is a multi-functional and excellent environmental-friendly material and has wide application prospect in the field of a wave absorption coating, a catalyst and the like.

Description

Technical field [0001] The invention relates to a preparation method of a compound, in particular to a new use of manganese nodules and a preparation method of a layered intercalated magnetic metal composite material. Background technique [0002] Oceanic manganese nodules are a rich seabed mineral resource with large reserves and wide distribution, which has important strategic significance. In recent years, with the development of new technologies such as electron microscopy, powder X-ray diffraction, and neutron diffraction, the non-traditional utilization values ​​of manganese nodules, such as good adsorption capacity, high catalytic performance and excellent photoelectric properties have gradually emerged. The layered minerals extracted from oceanic manganese nodules retain the pore structure of the manganese nodules and have good catalytic and adsorption properties. Utilizing the physical and chemical characteristics of manganese nodules makes it more meaningful as a funct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F1/01
Inventor 陈雪刚付丁陈灵乐赵方舟秦文莉艾曼青
Owner ZHEJIANG UNIV
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