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Method for manufacturing metallic vanadium

A manufacturing method and metal technology, applied in the field of metal vanadium, can solve the problems of large-scale equipment, difficult treatment of vanadium halides, and failure to achieve practical use, and achieve low-cost effects

Inactive Publication Date: 2018-01-02
HOKKAIDO UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the treatment of vanadium halides is very difficult, and the design of the process for removing the by-products generated during the production process is complicated, so it is difficult to increase the size of the device, and it has not been put into practical use.

Method used

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  • Method for manufacturing metallic vanadium
  • Method for manufacturing metallic vanadium
  • Method for manufacturing metallic vanadium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] Next, examples will be described.

[0093] In this embodiment, as the molten salt (mixed molten salt) 8, 600 g of calcium chloride (manufactured by Wako Pure Chemical Industries, Ltd., reagent special grade) is obtained by adding 0.5 mol% calcium sulfide (manufactured by Wako Pure Chemical Industries, Ltd., special grade reagent) Put the substance in the crucible 3 (with an inner diameter of 90mm and a depth of 200mm). The crucible 3 was placed in a closed container 4 (inner diameter of 105 mm, depth of 480 mm), flanges were attached and sealed, and after vacuum dehydration treatment, the temperature was raised to 900° C. in an argon atmosphere.

[0094] In addition, the titanium rod 1a and the carbon rod 1b of the anode 1 and the titanium rod 2a of the cathode 2 and the container 2b installed so as to surround the titanium rod are prepared. 1.502 g of vanadium sulfide 12 (purity 99% manufactured by Yauchi Chemical Co., Ltd.) was inserted into the container 2b.

[0095] Afte...

Embodiment 2

[0098] In this embodiment, as molten salt 8, a substance obtained by adding 0.5 mol% calcium sulfide (made by Wako Pure Chemical Industries, Ltd., special grade reagent) to 600 g of calcium chloride (made by Wako Pure Chemical Industries, Ltd., special grade reagent) is placed in a crucible 3 (Inner diameter is 90mm, depth is 200mm). The crucible 3 was placed in a closed container 4 (inner diameter of 105 mm, depth of 480 mm) and flanges were attached to seal the crucible 3, and after vacuum dehydration treatment, the temperature was raised to 900°C in an argon atmosphere.

[0099] In addition, the titanium rod 1a and the carbon rod 1b of the anode 1 and the titanium rod 2a of the cathode 2 and the container 2b installed so as to surround the titanium rod are prepared. In the container 2b, 1.488 g of vanadium trioxide 12 (purity of 99% or more manufactured by Sun Miner) is inserted.

[0100] After the temperature has stabilized, the two electrodes 1 and 2 are inserted into the mol...

Embodiment 3

[0103] In this example, as raw materials (vanadium compound 12), 4 g of ammonium metavanadate (Wako Pure Chemical Special Grade Reagent) and vanadyl sulfate (Xinxing Chemical) were prepared respectively. Then, each prepared raw material was subjected to heat treatment (heating temperature: 600°C, heating time: 10 minutes) as a pretreatment to obtain a treated material. The obtained substances were analyzed, and the results were all vanadium pentoxide oxide (V 2 O 5 ).

[0104] Use each vanadium pentoxide oxide (V 2 O 5 ), respectively, to manufacture metallic vanadium. At this time, put the vanadium oxide (V 2 O 5 The amount of) is 1.500 g in either case. In addition, due to the removal of vanadium oxide (V 2 O 5 The manufacturing conditions other than the amount of) are the same as in Example 2, so the description is omitted here.

[0105] The analysis results of the sulfur content and the oxygen content (oxygen concentration) of the samples (manufactured samples) produced by th...

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Abstract

The invention provides a method by which high-purity metallic vanadium is manufactured inexpensively and energy efficiently. [Solution] Provided is a method for manufacturing metallic vanadium in which a portion of an inorganic molten salt for forming a molten salt electrolytic bath in a reaction vessel is electrolyzed to generate calcium, and a vanadium compound is thermally reduced by the calcium to manufacture metallic vanadium, wherein at least one of the following conditions is met in the method for manufacturing metallic vanadium: the portion of the inorganic molten salt contains one ormore compounds selected from the group consisting of sulfides and sulfate compounds of calcium; and the vanadium compound is a mixed vanadium compound containing one or more compounds selected from the group consisting of vanadium sulfide, vanadium sulfate compounds, vanadium thiosulfate compounds, ammonium metavanadate, and vanadyl sulfate.

Description

Technical field [0001] The present invention relates to a method for producing metallic vanadium, especially high-purity metallic vanadium. Background technique [0002] Metal vanadium is widely used as coating materials, additives in titanium, aluminum, zirconium and steel, heat-resistant materials such as jets and missiles, sputtering targets, vacuum tube evaporation, alloy-based superconducting materials, etc., because it is not radiated The characteristics are also used as materials for nuclear reactors. [0003] In addition, metallic vanadium has hydrogen insertion / deintercalation properties of about 2.2 mass% at normal temperature and normal pressure, and therefore it is expected to use elemental metal as a hydrogen insertion material. For example, as a cathode of a Ni-hydrogen battery that can be a substitute for a nickel-cadmium battery, the use of a vanadium-based hydrogen intercalation alloy is considered. [0004] Furthermore, it is also considered for use in the electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B34/22C22B5/04C25C3/02C25C7/06
Inventor 铃木亮辅佐藤完二古川英树
Owner HOKKAIDO UNIVERSITY
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