Method for producing high purity vanadium metal

A metal, high-purity technology, applied in the field of producing metal vanadium, can solve the problems of complicated process, long production process, high manufacturing cost, etc., and achieve the effect of simple process, low production cost and short process flow

Inactive Publication Date: 2010-02-17
PANGANG GROUP RESEARCH INSTITUTE CO LTD +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above-mentioned several traditional methods for producing metal vanadium have complex processes, and it is necessary to first reduce the oxide or chloride of vanadium, and then refine and purify the primary metal vanadium obtained after reduction to obtain high-purity metal vanadium
Therefore, the production process is long and the manufacturing cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The mass fraction of getting 162g vanadium is 80% ferrovanadium as soluble anode, with metal molybdenum rod as cathode, with NaCl-KCl-VCl 2 The molten salt system is used as the electrolyte to form an electrolytic cell, in which the mass fraction of the concentration of vanadium ions is 2%; the electrolysis is carried out at a temperature of 800°C, and the initial current density of the anode is 0.4A / cm 2 , the initial current density of the cathode is 0.5A / cm 2 , electrolysis for 4 hours. After the electrolysis is completed, the anode loses 22g, and the cathode is taken out from the electrolyte, and the electrolyte entrapped in the metal vanadium is removed by leaching with hydrochloric acid with a mass fraction of 0.5% to 5%, and then the metal vanadium is washed with distilled water until there is no chloride ion in the washing solution , and finally obtained 20 g of precipitate after vacuum drying.

[0024] Chemical analysis was carried out on the above-mentioned ...

Embodiment 2

[0026] The mass fraction of getting 184g vanadium is 70% ferrovanadium as soluble anode, with metal molybdenum rod as cathode, with NaCl-CaCl 2 -VCl 2 The molten salt system is used as the electrolyte to form an electrolytic cell, in which the mass fraction of the concentration of vanadium ions is 5%; the electrolysis is carried out at a temperature of 800°C, and the initial current density of the anode is 0.25A / cm 2 , the initial current density of the cathode is 0.6A / cm 2 , electrolysis for 3 hours. After the electrolysis is completed, the anode loses 17g, and the cathode is taken out from the electrolyte, firstly soaked with hydrochloric acid with a mass fraction of 0.5% to 5% to remove the electrolyte contained in the metal vanadium, and then wash the metal vanadium with distilled water until there is no chloride ion in the washing solution , and finally obtained 16 g of precipitate after vacuum drying.

[0027] The chemical analysis of the above-mentioned dried precipi...

Embodiment 3

[0029] The mass fraction of getting 190g vanadium is 60% ferrovanadium as soluble anode, with metal molybdenum rod as cathode, with NaCl-LiCl-VCl 2The molten salt system is used as the electrolyte to form an electrolytic cell, in which the mass fraction of the concentration of vanadium ions is 8%; electrolysis is carried out at a temperature of 650°C, and the initial current density of the anode is 0.3A / cm 2 , the initial current density of the cathode is 0.8A / cm 2 , electrolysis for 6 hours. After the electrolysis is completed, the anode loses 20g, and the cathode is taken out from the electrolyte, firstly soaked with hydrochloric acid with a mass fraction of 0.5% to 5% to remove the electrolyte contained in the metal vanadium, and then wash the metal vanadium with distilled water until there is no chloride ion in the washing solution , and finally obtained 18 g of precipitate after vacuum drying.

[0030] Chemical analysis was carried out on the above-mentioned dried preci...

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PUM

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Abstract

The invention discloses a method for producing high purity vanadium metal, which comprises the following steps: using a ferrovanadium material as a soluble anode, using a corrosion-resistant metal conducting material as a cathode, using a molten salt system of a basic metal halide as an electrolyte, and adding a subhalide of vanadium into the electrolyte; electrolyzing the electrolyte at the temperature of 600-1000DEG C so that the vanadium in the anode can enter the molten salt system in the mode of low valence ions and deposit on the cathode to obtain the high purity vanadium metal. According to the method provided by the invention, not only high purity products can be obtained on the cathode, but also the process flow is shortened and the production cost is reduced by being compared with an existing process.

Description

technical field [0001] The invention relates to a method for producing metal vanadium, more specifically, relates to a method for producing high-purity metal vanadium by electrolysis using ferrovanadium material as a soluble anode. Background technique [0002] High-purity metal vanadium has the advantages of high melting point, good plasticity, good ductility, and corrosion resistance. Due to its high melting point, not only high temperature resistance, but also nuclear physical properties, it is also the best material for the neutron reflector in atomic reactors. [0003] High-purity metal vanadium is mostly melted and cast into ingots to make pure vanadium profiles, and can also be combined with other elements to synthesize vanadium-containing alloys. Moreover, it is not only used as an additive element of titanium-based alloys and high-strength heat-resistant special alloys, but also can be used to make high-speed breeder reactors, nuclear fuel cladding, and to make sup...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C3/26
Inventor 闫蓓蕾穆宏波穆天柱弓丽霞邓斌赵三超朱福兴彭卫星
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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